iSharkFly-Docs/java-tutorials
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'upstream/master'

Browse Source
This commit is contained in:
Alessio Stalla 2018-03-14 12:45:23 +01:00
commit 2d11766b50
535 changed files with 7320 additions and 4818 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
algorithms/README.md
View File

@ -16,3 +16,4 @@
- [Introduction to Minimax Algorithm](http://www.baeldung.com/java-minimax-algorithm)
- [How to Calculate Levenshtein Distance in Java?](http://www.baeldung.com/java-levenshtein-distance)
- [How to Find the Kth Largest Element in Java](http://www.baeldung.com/java-kth-largest-element)
- [Multi-Swarm Optimization Algorithm in Java](http://www.baeldung.com/java-multi-swarm-algorithm)

7
algorithms/pom.xml
View File

@ -9,6 +9,7 @@
<exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
<lombok.version>1.16.12</lombok.version>
<commons-math3.version>3.6.1</commons-math3.version>
<tradukisto.version>1.0.1</tradukisto.version>
</properties>
<parent>
@ -39,6 +40,11 @@
<artifactId>jgrapht-core</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>pl.allegro.finance</groupId>
<artifactId>tradukisto</artifactId>
<version>${tradukisto.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
@ -46,7 +52,6 @@
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>

75
algorithms/src/main/java/com/baeldung/algorithms/numberwordconverter/NumberWordConverter.java Normal file
View File

@ -0,0 +1,75 @@
package com.baeldung.algorithms.numberwordconverter;
import java.math.BigDecimal;
import pl.allegro.finance.tradukisto.MoneyConverters;
public class NumberWordConverter {
public static final String INVALID_INPUT_GIVEN = "Invalid input given";
public static final String[] ones = { "", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
public static final String[] tens = {
"", // 0
"", // 1
"twenty", // 2
"thirty", // 3
"forty", // 4
"fifty", // 5
"sixty", // 6
"seventy", // 7
"eighty", // 8
"ninety" // 9
};
public static String getMoneyIntoWords(String input) {
MoneyConverters converter = MoneyConverters.ENGLISH_BANKING_MONEY_VALUE;
return converter.asWords(new BigDecimal(input));
}
public static String getMoneyIntoWords(final double money) {
long dollar = (long) money;
long cents = Math.round((money - dollar) * 100);
if (money == 0D) {
return "";
}
if (money < 0) {
return INVALID_INPUT_GIVEN;
}
String dollarPart = "";
if (dollar > 0) {
dollarPart = convert(dollar) + " dollar" + (dollar == 1 ? "" : "s");
}
String centsPart = "";
if (cents > 0) {
if (dollarPart.length() > 0) {
centsPart = " and ";
}
centsPart += convert(cents) + " cent" + (cents == 1 ? "" : "s");
}
return dollarPart + centsPart;
}
private static String convert(final long n) {
if (n < 0) {
return INVALID_INPUT_GIVEN;
}
if (n < 20) {
return ones[(int) n];
}
if (n < 100) {
return tens[(int) n / 10] + ((n % 10 != 0) ? " " : "") + ones[(int) n % 10];
}
if (n < 1000) {
return ones[(int) n / 100] + " hundred" + ((n % 100 != 0) ? " " : "") + convert(n % 100);
}
if (n < 1_000_000) {
return convert(n / 1000) + " thousand" + ((n % 1000 != 0) ? " " : "") + convert(n % 1000);
}
if (n < 1_000_000_000) {
return convert(n / 1_000_000) + " million" + ((n % 1_000_000 != 0) ? " " : "") + convert(n % 1_000_000);
}
return convert(n / 1_000_000_000) + " billion" + ((n % 1_000_000_000 != 0) ? " " : "") + convert(n % 1_000_000_000);
}
}

84
algorithms/src/test/java/com/baeldung/algorithms/moneywords/NumberWordConverterTest.java Normal file
View File

@ -0,0 +1,84 @@
package com.baeldung.algorithms.moneywords;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.baeldung.algorithms.numberwordconverter.NumberWordConverter;
public class NumberWordConverterTest {
@Test
public void whenMoneyNegative_thenReturnInvalidInput() {
assertEquals(NumberWordConverter.INVALID_INPUT_GIVEN, NumberWordConverter.getMoneyIntoWords(-13));
}
@Test
public void whenZeroDollarsGiven_thenReturnEmptyString() {
assertEquals("", NumberWordConverter.getMoneyIntoWords(0));
}
@Test
public void whenOnlyDollarsGiven_thenReturnWords() {
assertEquals("one dollar", NumberWordConverter.getMoneyIntoWords(1));
}
@Test
public void whenOnlyCentsGiven_thenReturnWords() {
assertEquals("sixty cents", NumberWordConverter.getMoneyIntoWords(0.6));
}
@Test
public void whenAlmostAMillioDollarsGiven_thenReturnWords() {
String expectedResult = "nine hundred ninety nine thousand nine hundred ninety nine dollars";
assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(999_999));
}
@Test
public void whenThirtyMillionDollarsGiven_thenReturnWords() {
String expectedResult = "thirty three million three hundred forty eight thousand nine hundred seventy eight dollars";
assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(33_348_978));
}
@Test
public void whenTwoBillionDollarsGiven_thenReturnWords() {
String expectedResult = "two billion one hundred thirty three million two hundred forty seven thousand eight hundred ten dollars";
assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(2_133_247_810));
}
@Test
public void whenGivenDollarsAndCents_thenReturnWords() {
String expectedResult = "nine hundred twenty four dollars and sixty cents";
assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(924.6));
}
@Test
public void whenOneDollarAndNoCents_thenReturnDollarSingular() {
assertEquals("one dollar", NumberWordConverter.getMoneyIntoWords(1));
}
@Test
public void whenNoDollarsAndOneCent_thenReturnCentSingular() {
assertEquals("one cent", NumberWordConverter.getMoneyIntoWords(0.01));
}
@Test
public void whenNoDollarsAndTwoCents_thenReturnCentsPlural() {
assertEquals("two cents", NumberWordConverter.getMoneyIntoWords(0.02));
}
@Test
public void whenNoDollarsAndNinetyNineCents_thenReturnWords() {
assertEquals("ninety nine cents", NumberWordConverter.getMoneyIntoWords(0.99));
}
@Test
public void whenNoDollarsAndNineFiveNineCents_thenCorrectRounding() {
assertEquals("ninety six cents", NumberWordConverter.getMoneyIntoWords(0.959));
}
@Test
public void whenGivenDollarsAndCents_thenReturnWordsVersionTwo() {
assertEquals("three hundred ten £ 00/100", NumberWordConverter.getMoneyIntoWords("310"));
}
}

76
apache-curator/pom.xml Normal file
View File

@ -0,0 +1,76 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>apache-curator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<properties>
<curator.version>4.0.1</curator.version>
<zookeeper.version>3.4.11</zookeeper.version>
<jackson-databind.version>2.9.4</jackson-databind.version>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
</properties>
<dependencies>
<!-- curator -->
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-x-async</artifactId>
<version>${curator.version}</version>
<exclusions>
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
<version>${curator.version}</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>${zookeeper.version}</version>
</dependency>
<!-- utils -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson-databind.version}</version>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

31
apache-curator/src/main/java/com/baeldung/apache/curator/modeled/HostConfig.java Normal file
View File

@ -0,0 +1,31 @@
package com.baeldung.apache.curator.modeled;
public class HostConfig {
private String hostname;
private int port;
public HostConfig() {
}
public HostConfig(String hostname, int port) {
this.hostname = hostname;
this.port = port;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
public String getHostname() {
return hostname;
}
public void setHostname(String hostname) {
this.hostname = hostname;
}
}

22
apache-curator/src/test/java/com/baeldung/apache/curator/BaseTest.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.apache.curator;
import org.apache.curator.RetryPolicy;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.RetryNTimes;
import org.junit.Before;
public abstract class BaseTest {
@Before
public void setup() {
org.apache.log4j.BasicConfigurator.configure();
}
protected CuratorFramework newClient() {
int sleepMsBetweenRetries = 100;
int maxRetries = 3;
RetryPolicy retryPolicy = new RetryNTimes(maxRetries, sleepMsBetweenRetries);
return CuratorFrameworkFactory.newClient("127.0.0.1:2181", retryPolicy);
}
}

89
apache-curator/src/test/java/com/baeldung/apache/curator/configuration/ConfigurationManagementManualTest.java Normal file
View File

@ -0,0 +1,89 @@
package com.baeldung.apache.curator.configuration;
import static com.jayway.awaitility.Awaitility.await;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.x.async.AsyncCuratorFramework;
import org.junit.Test;
import com.baeldung.apache.curator.BaseTest;
public class ConfigurationManagementManualTest extends BaseTest {
private static final String KEY_FORMAT = "/%s";
@Test
public void givenPath_whenCreateKey_thenValueIsStored() throws Exception {
try (CuratorFramework client = newClient()) {
client.start();
AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
String key = getKey();
String expected = "my_value";
// Create key nodes structure
client.create()
.forPath(key);
// Set data value for our key
async.setData()
.forPath(key, expected.getBytes());
// Get data value
AtomicBoolean isEquals = new AtomicBoolean();
async.getData()
.forPath(key)
.thenAccept(
data -> isEquals.set(new String(data).equals(expected)));
await().until(() -> assertThat(isEquals.get()).isTrue());
}
}
@Test
public void givenPath_whenWatchAKeyAndStoreAValue_thenWatcherIsTriggered()
throws Exception {
try (CuratorFramework client = newClient()) {
client.start();
AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
String key = getKey();
String expected = "my_value";
// Create key structure
async.create()
.forPath(key);
List<String> changes = new ArrayList<>();
// Watch data value
async.watched()
.getData()
.forPath(key)
.event()
.thenAccept(watchedEvent -> {
try {
changes.add(new String(client.getData()
.forPath(watchedEvent.getPath())));
} catch (Exception e) {
// fail ...
}
});
// Set data value for our key
async.setData()
.forPath(key, expected.getBytes());
await().until(() -> assertThat(changes.size() > 0).isTrue());
}
}
private String getKey() {
return String.format(KEY_FORMAT, UUID.randomUUID()
.toString());
}
}

79
apache-curator/src/test/java/com/baeldung/apache/curator/connection/ConnectionManagementManualTest.java Normal file
View File

@ -0,0 +1,79 @@
package com.baeldung.apache.curator.connection;
import static com.jayway.awaitility.Awaitility.await;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.curator.RetryPolicy;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.RetryNTimes;
import org.apache.curator.x.async.AsyncCuratorFramework;
import org.junit.Test;
public class ConnectionManagementManualTest {
@Test
public void givenRunningZookeeper_whenOpenConnection_thenClientIsOpened()
throws Exception {
int sleepMsBetweenRetries = 100;
int maxRetries = 3;
RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
sleepMsBetweenRetries);
try (CuratorFramework client = CuratorFrameworkFactory
.newClient("127.0.0.1:2181", retryPolicy)) {
client.start();
assertThat(client.checkExists()
.forPath("/")).isNotNull();
}
}
@Test
public void givenRunningZookeeper_whenOpenConnectionUsingAsyncNotBlocking_thenClientIsOpened()
throws InterruptedException {
int sleepMsBetweenRetries = 100;
int maxRetries = 3;
RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
sleepMsBetweenRetries);
try (CuratorFramework client = CuratorFrameworkFactory
.newClient("127.0.0.1:2181", retryPolicy)) {
client.start();
AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
AtomicBoolean exists = new AtomicBoolean(false);
async.checkExists()
.forPath("/")
.thenAcceptAsync(s -> exists.set(s != null));
await().until(() -> assertThat(exists.get()).isTrue());
}
}
@Test
public void givenRunningZookeeper_whenOpenConnectionUsingAsyncBlocking_thenClientIsOpened()
throws InterruptedException {
int sleepMsBetweenRetries = 100;
int maxRetries = 3;
RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
sleepMsBetweenRetries);
try (CuratorFramework client = CuratorFrameworkFactory
.newClient("127.0.0.1:2181", retryPolicy)) {
client.start();
AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
AtomicBoolean exists = new AtomicBoolean(false);
async.checkExists()
.forPath("/")
.thenAccept(s -> exists.set(s != null));
await().until(() -> assertThat(exists.get()).isTrue());
}
}
}

49
apache-curator/src/test/java/com/baeldung/apache/curator/modeled/ModelTypedExamplesManualTest.java Normal file
View File

@ -0,0 +1,49 @@
package com.baeldung.apache.curator.modeled;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.fail;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.x.async.AsyncCuratorFramework;
import org.apache.curator.x.async.modeled.JacksonModelSerializer;
import org.apache.curator.x.async.modeled.ModelSpec;
import org.apache.curator.x.async.modeled.ModeledFramework;
import org.apache.curator.x.async.modeled.ZPath;
import org.junit.Test;
import com.baeldung.apache.curator.BaseTest;
public class ModelTypedExamplesManualTest extends BaseTest {
@Test
public void givenPath_whenStoreAModel_thenNodesAreCreated()
throws InterruptedException {
ModelSpec<HostConfig> mySpec = ModelSpec
.builder(ZPath.parseWithIds("/config/dev"),
JacksonModelSerializer.build(HostConfig.class))
.build();
try (CuratorFramework client = newClient()) {
client.start();
AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
ModeledFramework<HostConfig> modeledClient = ModeledFramework
.wrap(async, mySpec);
modeledClient.set(new HostConfig("host-name", 8080));
modeledClient.read()
.whenComplete((value, e) -> {
if (e != null) {
fail("Cannot read host config", e);
} else {
assertThat(value).isNotNull();
assertThat(value.getHostname()).isEqualTo("host-name");
assertThat(value.getPort()).isEqualTo(8080);
}
});
}
}
}

74
apache-curator/src/test/java/com/baeldung/apache/curator/recipes/RecipesManualTest.java Normal file
View File

@ -0,0 +1,74 @@
package com.baeldung.apache.curator.recipes;
import static org.assertj.core.api.Assertions.assertThat;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.recipes.leader.LeaderSelector;
import org.apache.curator.framework.recipes.leader.LeaderSelectorListener;
import org.apache.curator.framework.recipes.locks.InterProcessSemaphoreMutex;
import org.apache.curator.framework.recipes.shared.SharedCount;
import org.apache.curator.framework.state.ConnectionState;
import org.junit.Test;
import com.baeldung.apache.curator.BaseTest;
public class RecipesManualTest extends BaseTest {
@Test
public void givenRunningZookeeper_whenUsingLeaderElection_thenNoErrors() {
try (CuratorFramework client = newClient()) {
client.start();
LeaderSelector leaderSelector = new LeaderSelector(client, "/mutex/select/leader/for/job/A", new LeaderSelectorListener() {
@Override
public void stateChanged(CuratorFramework client, ConnectionState newState) {
}
@Override
public void takeLeadership(CuratorFramework client) throws Exception {
// I'm the leader of the job A !
}
});
leaderSelector.start();
// Wait until the job A is done among all the members
leaderSelector.close();
}
}
@Test
public void givenRunningZookeeper_whenUsingSharedLock_thenNoErrors() throws Exception {
try (CuratorFramework client = newClient()) {
client.start();
InterProcessSemaphoreMutex sharedLock = new InterProcessSemaphoreMutex(client, "/mutex/process/A");
sharedLock.acquire();
// Do process A
sharedLock.release();
}
}
@Test
public void givenRunningZookeeper_whenUsingSharedCounter_thenCounterIsIncrement() throws Exception {
try (CuratorFramework client = newClient()) {
client.start();
try (SharedCount counter = new SharedCount(client, "/counters/A", 0)) {
counter.start();
counter.setCount(0);
counter.setCount(counter.getCount() + 1);
assertThat(counter.getCount()).isEqualTo(1);
}
}
}
}

25
apache-tika/pom.xml Normal file
View File

@ -0,0 +1,25 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>apache-tika</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<properties>
<tika.version>1.17</tika.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tika</groupId>
<artifactId>tika-parsers</artifactId>
<version>${tika.version}</version>
</dependency>
</dependencies>
</project>

67
apache-tika/src/main/java/com/baeldung/tika/TikaAnalysis.java Normal file
View File

@ -0,0 +1,67 @@
package com.baeldung.tika;
import java.io.IOException;
import java.io.InputStream;
import org.apache.tika.Tika;
import org.apache.tika.detect.DefaultDetector;
import org.apache.tika.detect.Detector;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.mime.MediaType;
import org.apache.tika.parser.AutoDetectParser;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.Parser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
public class TikaAnalysis {
public static String detectDocTypeUsingDetector(InputStream stream) throws IOException {
Detector detector = new DefaultDetector();
Metadata metadata = new Metadata();
MediaType mediaType = detector.detect(stream, metadata);
return mediaType.toString();
}
public static String detectDocTypeUsingFacade(InputStream stream) throws IOException {
Tika tika = new Tika();
String mediaType = tika.detect(stream);
return mediaType;
}
public static String extractContentUsingParser(InputStream stream) throws IOException, TikaException, SAXException {
Parser parser = new AutoDetectParser();
ContentHandler handler = new BodyContentHandler();
Metadata metadata = new Metadata();
ParseContext context = new ParseContext();
parser.parse(stream, handler, metadata, context);
return handler.toString();
}
public static String extractContentUsingFacade(InputStream stream) throws IOException, TikaException {
Tika tika = new Tika();
String content = tika.parseToString(stream);
return content;
}
public static Metadata extractMetadatatUsingParser(InputStream stream) throws IOException, SAXException, TikaException {
Parser parser = new AutoDetectParser();
ContentHandler handler = new BodyContentHandler();
Metadata metadata = new Metadata();
ParseContext context = new ParseContext();
parser.parse(stream, handler, metadata, context);
return metadata;
}
public static Metadata extractMetadatatUsingFacade(InputStream stream) throws IOException, TikaException {
Tika tika = new Tika();
Metadata metadata = new Metadata();
tika.parse(stream, metadata);
return metadata;
}
}

79
apache-tika/src/test/java/com/baeldung/tika/TikaUnitTest.java Normal file
View File

@ -0,0 +1,79 @@
package com.baeldung.tika;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.io.IOException;
import java.io.InputStream;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.junit.Test;
import org.xml.sax.SAXException;
public class TikaUnitTest {
@Test
public void whenUsingDetector_thenDocumentTypeIsReturned() throws IOException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.txt");
String mediaType = TikaAnalysis.detectDocTypeUsingDetector(stream);
assertEquals("application/pdf", mediaType);
stream.close();
}
@Test
public void whenUsingFacade_thenDocumentTypeIsReturned() throws IOException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.txt");
String mediaType = TikaAnalysis.detectDocTypeUsingFacade(stream);
assertEquals("application/pdf", mediaType);
stream.close();
}
@Test
public void whenUsingParser_thenContentIsReturned() throws IOException, TikaException, SAXException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.docx");
String content = TikaAnalysis.extractContentUsingParser(stream);
assertThat(content, containsString("Apache Tika - a content analysis toolkit"));
assertThat(content, containsString("detects and extracts metadata and text"));
stream.close();
}
@Test
public void whenUsingFacade_thenContentIsReturned() throws IOException, TikaException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.docx");
String content = TikaAnalysis.extractContentUsingFacade(stream);
assertThat(content, containsString("Apache Tika - a content analysis toolkit"));
assertThat(content, containsString("detects and extracts metadata and text"));
stream.close();
}
@Test
public void whenUsingParser_thenMetadataIsReturned() throws IOException, TikaException, SAXException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.xlsx");
Metadata metadata = TikaAnalysis.extractMetadatatUsingParser(stream);
assertEquals("org.apache.tika.parser.DefaultParser", metadata.get("X-Parsed-By"));
assertEquals("Microsoft Office User", metadata.get("Author"));
stream.close();
}
@Test
public void whenUsingFacade_thenMetadataIsReturned() throws IOException, TikaException {
InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.xlsx");
Metadata metadata = TikaAnalysis.extractMetadatatUsingFacade(stream);
assertEquals("org.apache.tika.parser.DefaultParser", metadata.get("X-Parsed-By"));
assertEquals("Microsoft Office User", metadata.get("Author"));
stream.close();
}
}

BIN
apache-tika/src/test/resources/tika.docx Normal file
View File

Binary file not shown.

BIN
apache-tika/src/test/resources/tika.txt Normal file
View File

Binary file not shown.

BIN
apache-tika/src/test/resources/tika.xlsx Normal file
View File

Binary file not shown.

6
apache-zookeeper/pom.xml
View File

@ -6,6 +6,12 @@
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.zookeeper</groupId>

137
aws/src/main/java/com/baeldung/ec2/EC2Application.java Normal file
View File

@ -0,0 +1,137 @@
package com.baeldung.ec2;
import java.util.Arrays;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
import com.amazonaws.services.ec2.model.CreateKeyPairRequest;
import com.amazonaws.services.ec2.model.CreateKeyPairResult;
import com.amazonaws.services.ec2.model.CreateSecurityGroupRequest;
import com.amazonaws.services.ec2.model.DescribeInstancesRequest;
import com.amazonaws.services.ec2.model.DescribeInstancesResult;
import com.amazonaws.services.ec2.model.DescribeKeyPairsRequest;
import com.amazonaws.services.ec2.model.DescribeKeyPairsResult;
import com.amazonaws.services.ec2.model.IpPermission;
import com.amazonaws.services.ec2.model.IpRange;
import com.amazonaws.services.ec2.model.MonitorInstancesRequest;
import com.amazonaws.services.ec2.model.RebootInstancesRequest;
import com.amazonaws.services.ec2.model.RunInstancesRequest;
import com.amazonaws.services.ec2.model.StartInstancesRequest;
import com.amazonaws.services.ec2.model.StopInstancesRequest;
import com.amazonaws.services.ec2.model.UnmonitorInstancesRequest;
public class EC2Application {
private static final AWSCredentials credentials;
static {
// put your accesskey and secretkey here
credentials = new BasicAWSCredentials(
"<AWS accesskey>",
"<AWS secretkey>"
);
}
public static void main(String[] args) {
// Set up the client
AmazonEC2 ec2Client = AmazonEC2ClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(credentials))
.withRegion(Regions.US_EAST_1)
.build();
// Create a security group
CreateSecurityGroupRequest createSecurityGroupRequest = new CreateSecurityGroupRequest().withGroupName("BaeldungSecurityGroup")
.withDescription("Baeldung Security Group");
ec2Client.createSecurityGroup(createSecurityGroupRequest);
// Allow HTTP and SSH traffic
IpRange ipRange1 = new IpRange().withCidrIp("0.0.0.0/0");
IpPermission ipPermission1 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
.withIpProtocol("tcp")
.withFromPort(80)
.withToPort(80);
IpPermission ipPermission2 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
.withIpProtocol("tcp")
.withFromPort(22)
.withToPort(22);
AuthorizeSecurityGroupIngressRequest authorizeSecurityGroupIngressRequest = new AuthorizeSecurityGroupIngressRequest()
.withGroupName("BaeldungSecurityGroup")
.withIpPermissions(ipPermission1, ipPermission2);
ec2Client.authorizeSecurityGroupIngress(authorizeSecurityGroupIngressRequest);
// Create KeyPair
CreateKeyPairRequest createKeyPairRequest = new CreateKeyPairRequest()
.withKeyName("baeldung-key-pair");
CreateKeyPairResult createKeyPairResult = ec2Client.createKeyPair(createKeyPairRequest);
String privateKey = createKeyPairResult
.getKeyPair()
.getKeyMaterial(); // make sure you keep it, the private key, Amazon doesn't store the private key
// See what key-pairs you've got
DescribeKeyPairsRequest describeKeyPairsRequest = new DescribeKeyPairsRequest();
DescribeKeyPairsResult describeKeyPairsResult = ec2Client.describeKeyPairs(describeKeyPairsRequest);
// Launch an Amazon Instance
RunInstancesRequest runInstancesRequest = new RunInstancesRequest().withImageId("ami-97785bed") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html | https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.html
.withInstanceType("t2.micro") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
.withMinCount(1)
.withMaxCount(1)
.withKeyName("baeldung-key-pair") // optional - if not present, can't connect to instance
.withSecurityGroups("BaeldungSecurityGroup");
String yourInstanceId = ec2Client.runInstances(runInstancesRequest).getReservation().getInstances().get(0).getInstanceId();
// Start an Instance
StartInstancesRequest startInstancesRequest = new StartInstancesRequest()
.withInstanceIds(yourInstanceId);
ec2Client.startInstances(startInstancesRequest);
// Monitor Instances
MonitorInstancesRequest monitorInstancesRequest = new MonitorInstancesRequest()
.withInstanceIds(yourInstanceId);
ec2Client.monitorInstances(monitorInstancesRequest);
UnmonitorInstancesRequest unmonitorInstancesRequest = new UnmonitorInstancesRequest()
.withInstanceIds(yourInstanceId);
ec2Client.unmonitorInstances(unmonitorInstancesRequest);
// Reboot an Instance
RebootInstancesRequest rebootInstancesRequest = new RebootInstancesRequest()
.withInstanceIds(yourInstanceId);
ec2Client.rebootInstances(rebootInstancesRequest);
// Stop an Instance
StopInstancesRequest stopInstancesRequest = new StopInstancesRequest()
.withInstanceIds(yourInstanceId);
ec2Client.stopInstances(stopInstancesRequest)
.getStoppingInstances()
.get(0)
.getPreviousState()
.getName();
// Describe an Instance
DescribeInstancesRequest describeInstancesRequest = new DescribeInstancesRequest();
DescribeInstancesResult response = ec2Client.describeInstances(describeInstancesRequest);
System.out.println(response.getReservations()
.get(0)
.getInstances()
.get(0)
.getKernelId());
}
}

2
core-groovy/build.gradle
View File

@ -8,6 +8,6 @@ repositories {
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.5.0-alpha-1'
compile 'org.codehaus.groovy:groovy-all:2.4.13'
testCompile 'org.spockframework:spock-core:1.1-groovy-2.4'
}

9
core-groovy/pom.xml
View File

@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-groovy</artifactId>
@ -24,17 +23,17 @@
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy</artifactId>
<version>2.5.0-alpha-1</version>
<version>2.4.13</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.5.0-alpha-1</version>
<version>2.4.13</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-sql</artifactId>
<version>2.5.0-alpha-1</version>
<version>2.4.13</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>

9
core-groovy/src/main/groovy/com/baeldung/json/JsonParser.groovy
View File

@ -1,6 +1,5 @@
package com.baeldung.json
import groovy.json.JsonGenerator
import groovy.json.JsonOutput
import groovy.json.JsonParserType
import groovy.json.JsonSlurper
@ -21,14 +20,6 @@ class JsonParser {
JsonOutput.toJson(account)
}
String toJson(Account account, String dateFormat, String... fieldsToExclude) {
JsonGenerator generator = new JsonGenerator.Options()
.dateFormat(dateFormat)
.excludeFieldsByName(fieldsToExclude)
.build()
generator.toJson(account)
}
String prettyfy(String json) {
JsonOutput.prettyPrint(json)
}

14
core-groovy/src/test/groovy/com/baeldung/json/JsonParserTest.groovy
View File

@ -52,20 +52,6 @@ class JsonParserTest extends Specification {
json == '{"value":15.6,"createdAt":"2018-01-01T00:00:00+0000","id":"123"}'
}
def 'Should parse to Json given an Account object, a date format and fields to exclude' () {
given:
Account account = new Account(
id: '123',
value: 15.6,
createdAt: new SimpleDateFormat('MM/dd/yyyy').parse('01/01/2018')
)
when:
def json = jsonParser.toJson(account, 'MM/dd/yyyy', 'value')
then:
json
json == '{"createdAt":"01/01/2018","id":"123"}'
}
def 'Should prettify given a json string' () {
given:
String json = '{"value":15.6,"createdAt":"01/01/2018","id":"123456"}'

2
core-java-8/README.md
View File

@ -41,3 +41,5 @@
- [Primitive Type Streams in Java 8](http://www.baeldung.com/java-8-primitive-streams)
- [Fail-Safe Iterator vs Fail-Fast Iterator](http://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
- [Shuffling Collections In Java](http://www.baeldung.com/java-shuffle-collection)
- [Java 8 StringJoiner](http://www.baeldung.com/java-string-joiner)
- [Introduction to Spliterator in Java](http://www.baeldung.com/java-spliterator)

71
core-java-8/src/main/java/com/baeldung/findanelement/FindElementInAList.java Normal file
View File

@ -0,0 +1,71 @@
package com.baeldung.findanelement;
import java.util.List;
import java.util.ListIterator;
import org.apache.commons.collections4.IterableUtils;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
public class FindElementInAList<T> {
public T findUsingIndexOf(T element, List<T> list) {
int index = list.indexOf(element);
if (index >= 0) {
return element;
}
return null;
}
public boolean findUsingListIterator(T element, List<T> list) {
ListIterator<T> listIterator = list.listIterator();
while (listIterator.hasNext()) {
T elementFromList = listIterator.next();
if (elementFromList.equals(element)) {
return true;
}
}
return false;
}
public boolean findUsingEnhancedForLoop(T element, List<T> list) {
for (T elementFromList : list) {
if (element.equals(elementFromList)) {
return true;
}
}
return false;
}
public T findUsingStream(T element, List<T> list) {
return list.stream()
.filter(integer -> integer.equals(element))
.findFirst()
.orElse(null);
}
public T findUsingParallelStream(T element, List<T> list) {
return list.parallelStream()
.filter(integer -> integer.equals(element))
.findAny()
.orElse(null);
}
public T findUsingGuava(T element, List<T> list) {
T foundElement = Iterables.tryFind(list, new Predicate<T>() {
public boolean apply(T input) {
return element.equals(input);
}
}).orNull();
return foundElement;
}
public T findUsingApacheCommon(T element, List<T> list) {
T foundElement = IterableUtils.find(list, new org.apache.commons.collections4.Predicate<T>() {
public boolean evaluate(T input) {
return element.equals(input);
}
});
return foundElement;
}
}

116
core-java-8/src/test/java/com/baeldung/findanelement/FindAnElementTest.java Normal file
View File

@ -0,0 +1,116 @@
package com.baeldung.findanelement;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
public class FindAnElementTest {
private static List<Integer> scores = new ArrayList<>();
static {
scores.add(0);
scores.add(1);
scores.add(2);
}
private static FindElementInAList<Integer> findElementInAList = new FindElementInAList<>();
@Test
public void givenElement_whenFoundUsingIndexOf_thenReturnElement() {
Integer scoreToFind = 1;
Integer score = findElementInAList.findUsingIndexOf(scoreToFind, scores);
assertTrue(score.equals(scoreToFind));
}
@Test
public void givenElement_whenNotFoundUsingListIterator_thenReturnNull() {
boolean found = findElementInAList.findUsingListIterator(5, scores);
assertTrue(!found);
}
@Test
public void givenElement_whenFoundListIterator_thenReturnElement() {
Integer scoreToFind = 1;
boolean found = findElementInAList.findUsingListIterator(scoreToFind, scores);
assertTrue(found);
}
@Test
public void givenElement_whenNotFoundUsingIndexOf_thenReturnNull() {
Integer score = findElementInAList.findUsingIndexOf(5, scores);
assertNull(score);
}
@Test
public void givenElement_whenFoundUsingEnhancedForLoop_thenReturnElement() {
Integer scoreToFind = 1;
boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
assertTrue(found);
}
@Test
public void givenElement_whenNotFoundUsingEnhancedForLoop_thenReturnNull() {
Integer scoreToFind = 5;
boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
assertTrue(!found);
}
@Test
public void givenElement_whenFoundUsingStream_thenReturnElement() {
Integer scoreToFind = 1;
Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
assertTrue(score.equals(scoreToFind));
}
@Test
public void givenElement_whenNotFoundUsingStream_thenReturnNull() {
Integer scoreToFind = 5;
Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
assertNull(score);
}
@Test
public void givenElement_whenFoundUsingParallelStream_thenReturnElement() {
Integer scoreToFind = 1;
Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
assertTrue(score.equals(scoreToFind));
}
@Test
public void givenElement_whenNotFoundUsingParallelStream_thenReturnNull() {
Integer scoreToFind = 5;
Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
assertNull(score);
}
@Test
public void givenElement_whenFoundUsingGuava_thenReturnElement() {
Integer scoreToFind = 1;
Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
assertTrue(score.equals(scoreToFind));
}
@Test
public void givenElement_whenNotFoundUsingGuava_thenReturnNull() {
Integer scoreToFind = 5;
Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
assertNull(score);
}
@Test
public void givenElement_whenFoundUsingApacheCommons_thenReturnElement() {
Integer scoreToFind = 1;
Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
assertTrue(score.equals(scoreToFind));
}
@Test
public void givenElement_whenNotFoundUsingApacheCommons_thenReturnNull() {
Integer scoreToFind = 5;
Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
assertNull(score);
}
}

89
core-java-8/src/test/java/com/baeldung/math/MathNewMethodsUnitTest.java Normal file
View File

@ -0,0 +1,89 @@
package com.baeldung.math;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
public class MathNewMethodsUnitTest {
@Test
public void whenAddExactToInteger_thenExpectCorrectArithmeticResult() {
assertEquals(150, Math.addExact(100, 50)); // Returns 150
}
@Test
public void whenSubstractExactFromInteger_thenExpectCorrectArithmeticResult() {
assertEquals(50, Math.subtractExact(100, 50)); // Returns 50
}
@Test
public void whenDecrementExactInteger_thenExpectCorrectArithmeticResult() {
assertEquals(99, Math.decrementExact(100)); // Returns 99
}
@Test
public void whenIncrementExactToInteger_thenExpectCorrectArithmeticResult() {
assertEquals(101, Math.incrementExact(100)); // Returns 101
}
@Test
public void whenMultiplyExactTwoIntegers_thenExpectCorrectArithmeticResult() {
assertEquals(500, Math.multiplyExact(100, 5)); // Returns 500
}
@Test
public void whenNegateExactInteger_thenExpectCorrectArithmeticResult() {
assertEquals(-100, Math.negateExact(100)); // Returns -100
}
@Test(expected = ArithmeticException.class)
public void whenAddToMaxInteger_thenThrowsArithmeticException() {
Math.addExact(Integer.MAX_VALUE, 1); // Throws ArithmeticException
}
@Test(expected = ArithmeticException.class)
public void whenDecrementMinInteger_thenThrowsArithmeticException() {
Math.decrementExact(Integer.MIN_VALUE); // Throws ArithmeticException
}
@Test(expected = ArithmeticException.class)
public void whenIncrementMaxLong_thenThrowsArithmeticException() {
Math.incrementExact(Long.MAX_VALUE); // Throws ArithmeticException
}
@Test(expected = ArithmeticException.class)
public void whenMultiplyMaxLong_thenThrowsArithmeticException() {
Math.multiplyExact(Long.MAX_VALUE, 2); // Throws ArithmeticException
}
@Test(expected = ArithmeticException.class)
public void whenNegateMinInteger_thenThrowsArithmeticException() {
Math.negateExact(Integer.MIN_VALUE); // MinInt value: −2.147.483.648, but MaxInt Value: 2.147.483.647 => Throws ArithmeticException
}
@Test(expected = ArithmeticException.class)
public void whenSubstractFromMinInteger_thenThrowsArithmeticException() {
Math.subtractExact(Integer.MIN_VALUE, 1);
}
@Test
public void whenFloorDivTwoIntegers_thenExpectCorrectArithmeticResult() {
assertEquals(3, Math.floorDiv(7, 2)); // Exact quotient is 3.5 so floor(3.5) == 3
assertEquals(-4, Math.floorDiv(-7, 2)); // Exact quotient is -3.5 so floor(-3.5) == -4
}
@Test
public void whenModDivTwoIntegers_thenExpectCorrectArithmeticResult() {
assertEquals(2, Math.floorMod(5, 3)); // Returns 2: floorMod for positive numbers returns the same as % operator
assertEquals(1, Math.floorMod(-5, 3)); // Returns 1 and not 2 because floorDiv(-5, 3) is -2 and not -1 and (-2*3) + (1) = -5
}
@Test
public void whenNextDownOfDouble_thenExpectCorrectNumber() {
double number = 3.0;
double expected = 2.999999999999;
double delta = 0.00000001;
assertEquals(expected, Math.nextDown(number), delta); // The delta defines the accepted error range
}
}

23
core-java-io/.gitignore vendored
View File

@ -1,26 +1,5 @@
*.class
0.*
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
.resourceCache
# Packaged files #
*.jar
*.war
*.ear
# Files generated by integration tests
*.txt
backup-pom.xml
/bin/
# *.txt
/temp
#IntelliJ specific
.idea/
*.iml

112
core-java-io/pom.xml
View File

@ -1,5 +1,4 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>core-java-io</artifactId>
@ -211,16 +210,6 @@
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>1.5.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
@ -264,99 +253,6 @@
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
<archive>
<manifest>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedArtifactAttached>true</shadedArtifactAttached>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<executions>
<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
</configuration>
<goals>
<goal>one-jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
@ -384,7 +280,7 @@
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath/>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
@ -442,7 +338,7 @@
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase>-->
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
@ -452,7 +348,7 @@
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath/>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>

2
core-java-io/src/main/resources/targetFile.tmp
View File

@ -1,2 +0,0 @@
line 1
a second line

3
core-java-io/src/test/java/com/baeldung/copyfiles/FileCopierTest.java
View File

@ -30,8 +30,7 @@ public class FileCopierTest {
@Test
public void givenIoAPI_whenCopied_thenCopyExistsWithSameContents() throws IOException {
File copied = new File("src/test/resources/copiedWithIo.txt");
try (InputStream in = new BufferedInputStream(new FileInputStream(original));
OutputStream out = new BufferedOutputStream(new FileOutputStream(copied))) {
try (InputStream in = new BufferedInputStream(new FileInputStream(original)); OutputStream out = new BufferedOutputStream(new FileOutputStream(copied))) {
byte[] buffer = new byte[1024];
int lengthRead;
while ((lengthRead = in.read(buffer)) > 0) {

1
core-java-io/src/test/java/com/baeldung/file/FileOperationsManualTest.java
View File

@ -3,7 +3,6 @@ package com.baeldung.file;
import org.apache.commons.io.FileUtils;
import org.hamcrest.CoreMatchers;
import org.hamcrest.Matchers;
import org.junit.Assert;
import org.junit.Test;
import java.io.BufferedReader;

22
core-java-io/src/test/java/com/baeldung/file/FilesTest.java
View File

@ -42,19 +42,14 @@ public class FilesTest {
CharSink chs = com.google.common.io.Files.asCharSink(file, Charsets.UTF_8, FileWriteMode.APPEND);
chs.write("Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(new FileInputStream(fileName))).isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@Test
public void whenAppendToFileUsingFiles_thenCorrect() throws IOException {
Files.write(Paths.get(fileName), "Spain\r\n".getBytes(), StandardOpenOption.APPEND);
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(new FileInputStream(fileName))).isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@Test
@ -62,9 +57,7 @@ public class FilesTest {
File file = new File(fileName);
FileUtils.writeStringToFile(file, "Spain\r\n", StandardCharsets.UTF_8, true);
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(new FileInputStream(fileName))).isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@Test
@ -73,9 +66,7 @@ public class FilesTest {
fos.write("Spain\r\n".getBytes());
fos.close();
assertThat(StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
assertThat(StreamUtils.getStringFromInputStream(new FileInputStream(fileName))).isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\r\n");
}
@Test
@ -86,9 +77,6 @@ public class FilesTest {
bw.newLine();
bw.close();
assertThat(
StreamUtils.getStringFromInputStream(
new FileInputStream(fileName)))
.isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\n");
assertThat(StreamUtils.getStringFromInputStream(new FileInputStream(fileName))).isEqualTo("UK\r\n" + "US\r\n" + "Germany\r\n" + "Spain\n");
}
}

1
core-java-io/src/test/java/com/baeldung/java/nio2/PathManualTest.java
View File

@ -9,7 +9,6 @@ import java.net.URI;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Date;
import org.junit.Test;

55
core-java-io/src/test/java/com/baeldung/java/nio2/async/AsyncFileIntegrationTest.java
View File

@ -17,18 +17,19 @@ import java.util.concurrent.Future;
import static org.junit.Assert.assertEquals;
public class AsyncFileIntegrationTest {
@Test
public void givenPath_whenReadsContentWithFuture_thenCorrect() throws IOException, ExecutionException, InterruptedException {
Path path = Paths.get(URI.create(this.getClass().getClassLoader().getResource("file.txt").toString()));
AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.READ);
final Path path = Paths.get(URI.create(this.getClass().getClassLoader().getResource("file.txt").toString()));
final AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.READ);
ByteBuffer buffer = ByteBuffer.allocate(1024);
final ByteBuffer buffer = ByteBuffer.allocate(1024);
Future<Integer> operation = fileChannel.read(buffer, 0);
final Future<Integer> operation = fileChannel.read(buffer, 0);
operation.get();
String fileContent = new String(buffer.array()).trim();
final String fileContent = new String(buffer.array()).trim();
buffer.clear();
assertEquals(fileContent, "baeldung.com");
@ -36,18 +37,16 @@ public class AsyncFileIntegrationTest {
@Test
public void givenPath_whenReadsContentWithCompletionHandler_thenCorrect() throws IOException {
Path path = Paths.get(URI.create(AsyncFileIntegrationTest.class.getResource("/file.txt").toString()));
AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.READ);
final Path path = Paths.get(URI.create(this.getClass().getClassLoader().getResource("file.txt").toString()));
final AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.READ);
ByteBuffer buffer = ByteBuffer.allocate(1024);
final ByteBuffer buffer = ByteBuffer.allocate(1024);
fileChannel.read(buffer, 0, buffer, new CompletionHandler<Integer, ByteBuffer>() {
@Override
public void completed(Integer result, ByteBuffer attachment) {
// result is number of bytes read
// attachment is the buffer
}
@Override
@ -59,42 +58,40 @@ public class AsyncFileIntegrationTest {
@Test
public void givenPathAndContent_whenWritesToFileWithFuture_thenCorrect() throws IOException, ExecutionException, InterruptedException {
String fileName = "temp";
Path path = Paths.get(fileName);
AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE);
final String fileName = "temp";
final Path path = Paths.get(fileName);
final AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE);
ByteBuffer buffer = ByteBuffer.allocate(1024);
long position = 0;
final ByteBuffer buffer = ByteBuffer.allocate(1024);
final long position = 0;
buffer.put("hello world".getBytes());
buffer.flip();
Future<Integer> operation = fileChannel.write(buffer, position);
final Future<Integer> operation = fileChannel.write(buffer, position);
buffer.clear();
operation.get();
String content = readContent(path);
final String content = readContent(path);
assertEquals("hello world", content);
}
@Test
public void givenPathAndContent_whenWritesToFileWithHandler_thenCorrect() throws IOException {
String fileName = UUID.randomUUID().toString();
Path path = Paths.get(fileName);
AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE, StandardOpenOption.DELETE_ON_CLOSE);
final String fileName = UUID.randomUUID().toString();
final Path path = Paths.get(fileName);
final AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(path, StandardOpenOption.WRITE, StandardOpenOption.CREATE, StandardOpenOption.DELETE_ON_CLOSE);
ByteBuffer buffer = ByteBuffer.allocate(1024);
final ByteBuffer buffer = ByteBuffer.allocate(1024);
buffer.put("hello world".getBytes());
buffer.flip();
fileChannel.write(buffer, 0, buffer, new CompletionHandler<Integer, ByteBuffer>() {
@Override
public void completed(Integer result, ByteBuffer attachment) {
// result is number of bytes written
// attachment is the buffer
}
@Override
@ -104,23 +101,25 @@ public class AsyncFileIntegrationTest {
});
}
public static String readContent(Path file) throws ExecutionException, InterruptedException {
//
private String readContent(Path file) throws ExecutionException, InterruptedException {
AsynchronousFileChannel fileChannel = null;
try {
fileChannel = AsynchronousFileChannel.open(file, StandardOpenOption.READ);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ByteBuffer buffer = ByteBuffer.allocate(1024);
final ByteBuffer buffer = ByteBuffer.allocate(1024);
Future<Integer> operation = fileChannel.read(buffer, 0);
final Future<Integer> operation = fileChannel.read(buffer, 0);
operation.get();
String fileContent = new String(buffer.array()).trim();
final String fileContent = new String(buffer.array()).trim();
buffer.clear();
return fileContent;
}
}

1
core-java-io/src/test/java/com/baeldung/java/nio2/attributes/BasicAttribsIntegrationTest.java
View File

@ -20,7 +20,6 @@ public class BasicAttribsIntegrationTest {
private static final Logger LOG = LoggerFactory.getLogger(BasicAttribsIntegrationTest.class);
private static final String HOME = System.getProperty("user.home");
private static BasicFileAttributes basicAttribs;

15
core-java-io/src/test/java/com/baeldung/java8/JavaFolderSizeUnitTest.java
View File

@ -55,12 +55,7 @@ public class JavaFolderSizeUnitTest {
@Test
public void whenGetFolderSizeUsingJava8_thenCorrect() throws IOException {
final Path folder = Paths.get(path);
final long size = Files.walk(folder)
.filter(p -> p.toFile()
.isFile())
.mapToLong(p -> p.toFile()
.length())
.sum();
final long size = Files.walk(folder).filter(p -> p.toFile().isFile()).mapToLong(p -> p.toFile().length()).sum();
assertEquals(EXPECTED_SIZE, size);
}
@ -77,12 +72,8 @@ public class JavaFolderSizeUnitTest {
public void whenGetFolderSizeUsingGuava_thenCorrect() {
final File folder = new File(path);
final Iterable<File> files = com.google.common.io.Files.fileTreeTraverser()
.breadthFirstTraversal(folder);
final long size = StreamSupport.stream(files.spliterator(), false)
.filter(File::isFile)
.mapToLong(File::length)
.sum();
final Iterable<File> files = com.google.common.io.Files.fileTreeTraverser().breadthFirstTraversal(folder);
final long size = StreamSupport.stream(files.spliterator(), false).filter(File::isFile).mapToLong(File::length).sum();
assertEquals(EXPECTED_SIZE, size);
}

28
core-java-io/src/test/java/com/baeldung/mappedbytebuffer/MappedByteBufferUnitTest.java
View File

@ -18,14 +18,13 @@ import static org.junit.Assert.assertNotNull;
public class MappedByteBufferUnitTest {
@Test
public void givenFileChannel_whenReadToTheMappedByteBuffer_thenShouldSuccess() throws Exception {
//given
// given
CharBuffer charBuffer = null;
Path pathToRead = getFileURIFromResources("fileToRead.txt");
//when
// when
try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(pathToRead, EnumSet.of(StandardOpenOption.READ))) {
MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
@ -34,20 +33,19 @@ public class MappedByteBufferUnitTest {
}
}
//then
// then
assertNotNull(charBuffer);
assertEquals(charBuffer.toString(), "This is a content of the file");
}
@Test
public void givenPath_whenWriteToItUsingMappedByteBuffer_thenShouldSuccessfullyWrite() throws Exception {
//given
CharBuffer charBuffer = CharBuffer.wrap("This will be written to the file");
Path pathToWrite = getFileURIFromResources("fileToWriteTo.txt");
// given
final CharBuffer charBuffer = CharBuffer.wrap("This will be written to the file");
final Path pathToWrite = getFileURIFromResources("fileToWriteTo.txt");
//when
try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(pathToWrite,
EnumSet.of(StandardOpenOption.READ, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING))) {
// when
try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(pathToWrite, EnumSet.of(StandardOpenOption.READ, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING))) {
MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_WRITE, 0, charBuffer.length());
if (mappedByteBuffer != null) {
@ -55,14 +53,16 @@ public class MappedByteBufferUnitTest {
}
}
//then
List<String> fileContent = Files.readAllLines(pathToWrite);
// then
final List<String> fileContent = Files.readAllLines(pathToWrite);
assertEquals(fileContent.get(0), "This will be written to the file");
}
private Path getFileURIFromResources(String fileName) throws Exception {
ClassLoader classLoader = getClass().getClassLoader();
//
private final Path getFileURIFromResources(String fileName) throws Exception {
final ClassLoader classLoader = getClass().getClassLoader();
return Paths.get(classLoader.getResource(fileName).toURI());
}
}

47
core-java-io/src/test/java/com/baeldung/stream/FileCopyTest.java
View File

@ -1,47 +0,0 @@
package com.baeldung.stream;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import org.junit.Test;
public class FileCopyTest {
@Test
public void whenUsingStream_thenCopyFile() throws IOException {
File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_stream.txt");
File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_stream.txt");
FileCopy.copyFileUsingStream(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingFiles_thenCopyFile() throws IOException {
File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_files.txt");
File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_files.txt");
FileCopy.copyFileUsingJavaFiles(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingChannel_thenCopyFile() throws IOException {
File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_channel.txt");
File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_channel.txt");
FileCopy.copyFileUsingChannel(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingApache_thenCopyFile() throws IOException {
File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_apache.txt");
File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_apache.txt");
FileCopy.copyFileUsingApacheCommonsIO(src, dest);
assertTrue(dest.exists());
dest.delete();
}
}

52
core-java-io/src/test/java/com/baeldung/stream/FileCopyUnitTest.java Normal file
View File

@ -0,0 +1,52 @@
package com.baeldung.stream;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import org.junit.Test;
public class FileCopyUnitTest {
@Test
public void whenUsingStream_thenCopyFile() throws IOException {
final File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_stream.txt");
final File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_stream.txt");
FileCopy.copyFileUsingStream(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingFiles_thenCopyFile() throws IOException {
final File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_files.txt");
final File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_files.txt");
FileCopy.copyFileUsingJavaFiles(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingChannel_thenCopyFile() throws IOException {
final File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_channel.txt");
final File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_channel.txt");
FileCopy.copyFileUsingChannel(src, dest);
assertTrue(dest.exists());
dest.delete();
}
@Test
public void whenUsingApache_thenCopyFile() throws IOException {
final File src = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "src" + File.separator + "test_apache.txt");
final File dest = new File("src" + File.separator + "test" + File.separator + "resources" + File.separator + "copyTest" + File.separator + "dest" + File.separator + "test_apache.txt");
FileCopy.copyFileUsingApacheCommonsIO(src, dest);
assertTrue(dest.exists());
dest.delete();
}
}

20
core-java-io/src/test/java/org/baeldung/java/io/JavaInputStreamToXUnitTest.java
View File

@ -152,11 +152,11 @@ public class JavaInputStreamToXUnitTest {
@Test
public final void whenConvertingToFile_thenCorrect() throws IOException {
final InputStream initialStream = new FileInputStream(new File("src/main/resources/sample.txt"));
final InputStream initialStream = new FileInputStream(new File("src/test/resources/sample.txt"));
final byte[] buffer = new byte[initialStream.available()];
initialStream.read(buffer);
final File targetFile = new File("src/main/resources/targetFile.tmp");
final File targetFile = new File("src/test/resources/targetFile.tmp");
final OutputStream outStream = new FileOutputStream(targetFile);
outStream.write(buffer);
@ -166,8 +166,8 @@ public class JavaInputStreamToXUnitTest {
@Test
public final void whenConvertingInProgressToFile_thenCorrect() throws IOException {
final InputStream initialStream = new FileInputStream(new File("src/main/resources/sample.txt"));
final File targetFile = new File("src/main/resources/targetFile.tmp");
final InputStream initialStream = new FileInputStream(new File("src/test/resources/sample.txt"));
final File targetFile = new File("src/test/resources/targetFile.tmp");
final OutputStream outStream = new FileOutputStream(targetFile);
final byte[] buffer = new byte[8 * 1024];
@ -182,8 +182,8 @@ public class JavaInputStreamToXUnitTest {
@Test
public final void whenConvertingAnInProgressInputStreamToFile_thenCorrect2() throws IOException {
final InputStream initialStream = new FileInputStream(new File("src/main/resources/sample.txt"));
final File targetFile = new File("src/main/resources/targetFile.tmp");
final InputStream initialStream = new FileInputStream(new File("src/test/resources/sample.txt"));
final File targetFile = new File("src/test/resources/targetFile.tmp");
java.nio.file.Files.copy(initialStream, targetFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
@ -192,11 +192,11 @@ public class JavaInputStreamToXUnitTest {
@Test
public final void whenConvertingInputStreamToFile_thenCorrect3() throws IOException {
final InputStream initialStream = new FileInputStream(new File("src/main/resources/sample.txt"));
final InputStream initialStream = new FileInputStream(new File("src/test/resources/sample.txt"));
final byte[] buffer = new byte[initialStream.available()];
initialStream.read(buffer);
final File targetFile = new File("src/main/resources/targetFile.tmp");
final File targetFile = new File("src/test/resources/targetFile.tmp");
Files.write(buffer, targetFile);
IOUtils.closeQuietly(initialStream);
@ -204,9 +204,9 @@ public class JavaInputStreamToXUnitTest {
@Test
public final void whenConvertingInputStreamToFile_thenCorrect4() throws IOException {
final InputStream initialStream = FileUtils.openInputStream(new File("src/main/resources/sample.txt"));
final InputStream initialStream = FileUtils.openInputStream(new File("src/test/resources/sample.txt"));
final File targetFile = new File("src/main/resources/targetFile.tmp");
final File targetFile = new File("src/test/resources/targetFile.tmp");
FileUtils.copyInputStreamToFile(initialStream, targetFile);
}

4
core-java-io/src/test/java/org/baeldung/java/io/JavaReadFromFileUnitTest.java
View File

@ -18,7 +18,6 @@ import static org.junit.Assert.assertTrue;
public class JavaReadFromFileUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(JavaReadFromFileUnitTest.class);
@Test
@ -107,11 +106,12 @@ public class JavaReadFromFileUnitTest {
@Test
public void whenReadUTFEncodedFile_thenCorrect() throws IOException {
final String expected_value = "青空";
final String expected_value = "é<EFBFBD>’空";
final BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("src/test/resources/test_read7.in"), "UTF-8"));
final String currentLine = reader.readLine();
reader.close();
LOG.debug(currentLine);
assertEquals(expected_value, currentLine);
}

6
core-java-io/src/test/java/org/baeldung/java/io/JavaXToInputStreamUnitTest.java
View File

@ -68,7 +68,7 @@ public class JavaXToInputStreamUnitTest {
@Test
public final void givenUsingPlainJava_whenConvertingFileToInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/main/resources/sample.txt");
final File initialFile = new File("src/test/resources/sample.txt");
final InputStream targetStream = new FileInputStream(initialFile);
IOUtils.closeQuietly(targetStream);
@ -76,7 +76,7 @@ public class JavaXToInputStreamUnitTest {
@Test
public final void givenUsingGuava_whenConvertingFileToInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/main/resources/sample.txt");
final File initialFile = new File("src/test/resources/sample.txt");
final InputStream targetStream = Files.asByteSource(initialFile).openStream();
IOUtils.closeQuietly(targetStream);
@ -84,7 +84,7 @@ public class JavaXToInputStreamUnitTest {
@Test
public final void givenUsingCommonsIO_whenConvertingFileToInputStream_thenCorrect() throws IOException {
final File initialFile = new File("src/main/resources/sample.txt");
final File initialFile = new File("src/test/resources/sample.txt");
final InputStream targetStream = FileUtils.openInputStream(initialFile);
IOUtils.closeQuietly(targetStream);

0
core-java/src/test/resources/fileToWriteTo.txt → core-java-io/src/test/resources/copiedWithApacheCommons.txt
View File

0
core-java-io/src/test/resources/copiedWithIo.txt Normal file
View File

0
core-java-io/src/test/resources/copiedWithNio.txt Normal file
View File

0
core-java/src/test/resources/copyTest/dest/readme.txt → core-java-io/src/test/resources/copyTest/dest/readme.txt
View File

0
core-java/src/test/resources/copyTest/src/test_apache.txt → core-java-io/src/test/resources/copyTest/src/test_apache.txt
View File

0
core-java/src/test/resources/copyTest/src/test_channel.txt → core-java-io/src/test/resources/copyTest/src/test_channel.txt
View File

0
core-java/src/test/resources/copyTest/src/test_files.txt → core-java-io/src/test/resources/copyTest/src/test_files.txt
View File

0
core-java/src/test/resources/copyTest/src/test_stream.txt → core-java-io/src/test/resources/copyTest/src/test_stream.txt
View File

0
core-java/src/test/resources/file.txt → core-java-io/src/test/resources/file.txt
View File

0
core-java/src/test/resources/fileToRead.txt → core-java-io/src/test/resources/fileToRead.txt
View File

0
core-java-io/src/test/resources/fileToWriteTo.txt Normal file
View File

1
core-java-io/src/test/resources/initialFile.txt Normal file
View File

@ -0,0 +1 @@
With Commons IO

0
core-java-io/src/test/resources/original.txt Normal file
View File

1
core-java-io/src/test/resources/sample.txt Normal file
View File

@ -0,0 +1 @@
Hello World

1
core-java-io/src/test/resources/targetFile.tmp Normal file
View File

@ -0,0 +1 @@
Hello World

1
core-java-io/src/test/resources/targetFile.txt Normal file
View File

@ -0,0 +1 @@
Some textSome text

1
core-java-io/src/test/resources/test_write.txt Normal file
View File

@ -0,0 +1 @@
Some StringProduct name is iPhone and its price is 1000 $

BIN
core-java-io/src/test/resources/test_write_1.txt Normal file
View File

Binary file not shown.

BIN
core-java-io/src/test/resources/test_write_2.txt Normal file
View File

Binary file not shown.

1
core-java-io/src/test/resources/test_write_3.txt Normal file
View File

@ -0,0 +1 @@
Hello World

BIN
core-java-io/src/test/resources/test_write_4.txt Normal file
View File

Binary file not shown.

1
core-java-io/src/test/resources/test_write_5.txt Normal file
View File

@ -0,0 +1 @@
Hello

8
core-java/README.md
View File

@ -129,3 +129,11 @@
- [A Guide to the finalize Method in Java](http://www.baeldung.com/java-finalize)
- [Compiling Java *.class Files with javac](http://www.baeldung.com/javac)
- [Method Overloading and Overriding in Java](http://www.baeldung.com/java-method-overload-override)
- [A Guide to TreeSet in Java](http://www.baeldung.com/java-tree-set)
- [Guide to ThreadLocalRandom in Java](http://www.baeldung.com/java-thread-local-random)
- [Java TreeMap vs HashMap](http://www.baeldung.com/java-treemap-vs-hashmap)
- [A Guide to Iterator in Java](http://www.baeldung.com/java-iterator)
- [The Trie Data Structure in Java](http://www.baeldung.com/trie-java)
- [Introduction to Javadoc](http://www.baeldung.com/javadoc)
- [How to TDD a List Implementation](http://jira.baeldung.com/browse/BAEL-1537)

20
core-java/src/main/java/com/baeldung/array/Find2ndLargestInArray.java Normal file
View File

@ -0,0 +1,20 @@
package com.baeldung.array;
public class Find2ndLargestInArray {
public static int find2ndLargestElement(int[] array) {
int maxElement = array[0];
int secondLargestElement = -1;
for (int index = 0; index < array.length; index++) {
if (maxElement <= array[index]) {
secondLargestElement = maxElement;
maxElement = array[index];
} else if (secondLargestElement < array[index]) {
secondLargestElement = array[index];
}
}
return secondLargestElement;
}
}

22
core-java/src/main/java/com/baeldung/array/FindElementInArray.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.array;
import java.util.Arrays;
public class FindElementInArray {
public static boolean findGivenElementInArrayWithoutUsingStream(int[] array, int element) {
boolean actualResult = false;
for (int index = 0; index < array.length; index++) {
if (element == array[index]) {
actualResult = true;
break;
}
}
return actualResult;
}
public static boolean findGivenElementInArrayUsingStream(int[] array, int element) {
return Arrays.stream(array).filter(x -> element == x).findFirst().isPresent();
}
}

27
core-java/src/main/java/com/baeldung/array/SumAndAverageInArray.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.array;
import java.util.Arrays;
public class SumAndAverageInArray {
public static int findSumWithoutUsingStream(int[] array) {
int sum = 0;
for (int index = 0; index < array.length; index++) {
sum += array[index];
}
return sum;
}
public static int findSumUsingStream(int[] array) {
return Arrays.stream(array).sum();
}
public static double findAverageWithoutUsingStream(int[] array) {
int sum = findSumWithoutUsingStream(array);
return (double) sum / array.length;
}
public static double findAverageUsingStream(int[] array) {
return Arrays.stream(array).average().getAsDouble();
}
}

62
core-java/src/main/java/com/baeldung/asciiart/AsciiArt.java Normal file
View File

@ -0,0 +1,62 @@
package com.baeldung.asciiart;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
public class AsciiArt {
public AsciiArt() {
}
public void drawString(String text, String artChar, Settings settings) {
BufferedImage image = getImageIntegerMode(settings.width, settings.height);
Graphics2D graphics2D = getGraphics2D(image.getGraphics(), settings);
graphics2D.drawString(text, 6, ((int) (settings.height * 0.67)));
for (int y = 0; y < settings.height; y++) {
StringBuilder stringBuilder = new StringBuilder();
for (int x = 0; x < settings.width; x++) {
stringBuilder.append(image.getRGB(x, y) == -16777216 ? " " : artChar);
}
if (stringBuilder.toString()
.trim()
.isEmpty()) {
continue;
}
System.out.println(stringBuilder);
}
}
private BufferedImage getImageIntegerMode(int width, int height) {
return new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
}
private Graphics2D getGraphics2D(Graphics graphics, Settings settings) {
graphics.setFont(settings.font);
Graphics2D graphics2D = (Graphics2D) graphics;
graphics2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
return graphics2D;
}
public class Settings {
public Font font;
public int width;
public int height;
public Settings(Font font, int width, int height) {
this.font = font;
this.width = width;
this.height = height;
}
}
}

24
core-java/src/main/java/com/baeldung/casting/AnimalFeederGeneric.java Normal file
View File

@ -0,0 +1,24 @@
package com.baeldung.casting;
import java.util.ArrayList;
import java.util.List;
public class AnimalFeederGeneric<T> {
private Class<T> type;
public AnimalFeederGeneric(Class<T> type) {
this.type = type;
}
public List<T> feed(List<Animal> animals) {
List<T> list = new ArrayList<T>();
animals.forEach(animal -> {
if (type.isInstance(animal)) {
T objAsType = type.cast(animal);
list.add(objAsType);
}
});
return list;
}
}

5
core-java/src/main/java/com/baeldung/designpatterns/chainofresponsibility/AuthenticationProvider.java
View File

@ -1,5 +0,0 @@
package com.baeldung.designpatterns.chainofresponsibility;
public interface AuthenticationProvider {
}

123
core-java/src/main/java/com/baeldung/java/list/CustomList.java
View File

@ -9,6 +9,58 @@ import java.util.ListIterator;
public class CustomList<E> implements List<E> {
private Object[] internal = {};
@Override
public boolean isEmpty() {
// the first cycle
// return true;
// the second cycle
// if (internal.length != 0) {
// return false;
// } else {
// return true;
// }
// refactoring
return internal.length == 0;
}
@Override
public int size() {
// the first cycle
// if (isEmpty()) {
// return 0;
// } else {
// return internal.length;
// }
// refactoring
return internal.length;
}
@SuppressWarnings("unchecked")
@Override
public E get(int index) {
// the first cycle
// return (E) internal[0];
// improvement
return (E) internal[index];
}
@Override
public boolean add(E element) {
// the first cycle
// internal = new Object[] { element };
// return true;
// the second cycle
Object[] temp = Arrays.copyOf(internal, internal.length + 1);
temp[internal.length] = element;
internal = temp;
return true;
}
@Override
public void add(int index, E element) {
throw new UnsupportedOperationException();
@ -44,40 +96,8 @@ public class CustomList<E> implements List<E> {
throw new UnsupportedOperationException();
}
@Override
public int size() {
return internal.length;
}
@Override
public boolean isEmpty() {
return internal.length == 0;
}
@Override
public boolean add(E element) {
// the first cycle
// internal = new Object[1];
// internal[0] = element;
// return true;
Object[] temp = new Object[internal.length + 1];
System.arraycopy(internal, 0, temp, 0, internal.length);
temp[internal.length] = element;
internal = temp;
return true;
}
@SuppressWarnings("unchecked")
@Override
public E get(int index) {
return (E) internal[index];
}
@Override
public boolean contains(Object object) {
// return false
for (Object element : internal) {
if (object.equals(element)) {
return true;
@ -88,14 +108,6 @@ public class CustomList<E> implements List<E> {
@Override
public boolean containsAll(Collection<?> collection) {
// the first cycle
// for (Object element : collection) {
// if (element.equals(internal[0])) {
// return true;
// }
// }
// return false;
for (Object element : collection)
if (!contains(element)) {
return false;
@ -118,12 +130,6 @@ public class CustomList<E> implements List<E> {
@Override
public int indexOf(Object object) {
// the first cycle
// if (object.equals(internal[0])) {
// return 0;
// }
// return -1;
for (int i = 0; i < internal.length; i++) {
if (object.equals(internal[i])) {
return i;
@ -134,12 +140,6 @@ public class CustomList<E> implements List<E> {
@Override
public int lastIndexOf(Object object) {
// the first cycle
// if (object.equals(internal[0])) {
// return 0;
// }
// return -1;
for (int i = internal.length - 1; i >= 0; i--) {
if (object.equals(internal[i])) {
return i;
@ -151,9 +151,6 @@ public class CustomList<E> implements List<E> {
@SuppressWarnings("unchecked")
@Override
public List<E> subList(int fromIndex, int toIndex) {
// the first cycle
// return (List<E>) Arrays.asList(internal);
Object[] temp = new Object[toIndex - fromIndex];
System.arraycopy(internal, fromIndex, temp, 0, temp.length);
return (List<E>) Arrays.asList(temp);
@ -167,16 +164,6 @@ public class CustomList<E> implements List<E> {
@SuppressWarnings("unchecked")
@Override
public <T> T[] toArray(T[] array) {
// the first cycle
// array[0] = (T) internal[0];
// return array;
// the second cycle
// if (array.length < internal.length) {
// return (T[]) Arrays.copyOf(internal, internal.length, array.getClass());
// }
// return (T[]) Arrays.copyOf(internal, internal.length, array.getClass());
if (array.length < internal.length) {
return (T[]) Arrays.copyOf(internal, internal.length, array.getClass());
}
@ -209,18 +196,12 @@ public class CustomList<E> implements List<E> {
@Override
public boolean hasNext() {
// the first cycle
// return true;
return index != internal.length;
}
@SuppressWarnings("unchecked")
@Override
public E next() {
// the first cycle
// return (E) CustomList.this.internal[0];
E element = (E) CustomList.this.internal[index];
index++;
return element;

8
core-java/src/main/java/com/baeldung/javadoc/SuperHero.java
View File

@ -23,9 +23,15 @@ public class SuperHero extends Person {
* @return the amount of health hero has after attack
* @see <a href="http://www.link_to_jira/HERO-402">HERO-402</a>
* @since 1.0
* @deprecated As of version 1.1, use . . . instead
* @version 1.2
* @throws IllegalArgumentException if incomingDamage is negative
*/
public int successfullyAttacked(int incomingDamage, String damageType) {
public int successfullyAttacked(int incomingDamage, String damageType) throws Exception {
// do things
if (incomingDamage < 0) {
throw new IllegalArgumentException ("Cannot cause negative damage");
}
return 0;
}

2
core-java/src/main/resources/targetFile.tmp
View File

@ -1,2 +0,0 @@
line 1
a second line

16
core-java/src/test/java/com/baeldung/array/Find2ndLargestInArrayTest.java Normal file
View File

@ -0,0 +1,16 @@
package com.baeldung.array;
import org.junit.Assert;
import org.junit.Test;
public class Find2ndLargestInArrayTest {
@Test
public void givenAnIntArray_thenFind2ndLargestElement() {
int[] array = { 1, 3, 24, 16, 87, 20 };
int expected2ndLargest = 24;
int actualSecondLargestElement = Find2ndLargestInArray.find2ndLargestElement(array);
Assert.assertEquals(expected2ndLargest, actualSecondLargestElement);
}
}

35
core-java/src/test/java/com/baeldung/array/FindElementInArrayTest.java Normal file
View File

@ -0,0 +1,35 @@
package com.baeldung.array;
import org.junit.Assert;
import org.junit.Test;
public class FindElementInArrayTest {
@Test
public void givenAnIntArray_whenNotUsingStream_thenFindAnElement() {
int[] array = { 1, 3, 4, 8, 19, 20 };
int element = 19;
boolean expectedResult = true;
boolean actualResult = FindElementInArray.findGivenElementInArrayWithoutUsingStream(array, element);
Assert.assertEquals(expectedResult, actualResult);
element = 78;
expectedResult = false;
actualResult = FindElementInArray.findGivenElementInArrayWithoutUsingStream(array, element);
Assert.assertEquals(expectedResult, actualResult);
}
@Test
public void givenAnIntArray_whenUsingStream_thenFindAnElement() {
int[] array = { 15, 16, 12, 18 };
int element = 16;
boolean expectedResult = true;
boolean actualResult = FindElementInArray.findGivenElementInArrayUsingStream(array, element);
Assert.assertEquals(expectedResult, actualResult);
element = 20;
expectedResult = false;
actualResult = FindElementInArray.findGivenElementInArrayUsingStream(array, element);
Assert.assertEquals(expectedResult, actualResult);
}
}

41
core-java/src/test/java/com/baeldung/array/SumAndAverageInArrayTest.java Normal file
View File

@ -0,0 +1,41 @@
package com.baeldung.array;
import org.junit.Assert;
import org.junit.Test;
public class SumAndAverageInArrayTest {
@Test
public void givenAnIntArray_whenNotUsingStream_thenFindSum() {
int[] array = { 1, 3, 4, 8, 19, 20 };
int expectedSumOfArray = 55;
int actualSumOfArray = SumAndAverageInArray.findSumWithoutUsingStream(array);
Assert.assertEquals(expectedSumOfArray, actualSumOfArray);
}
@Test
public void givenAnIntArray_whenUsingStream_thenFindSum() {
int[] array = { 1, 3, 4, 8, 19, 20 };
int expectedSumOfArray = 55;
int actualSumOfArray = SumAndAverageInArray.findSumUsingStream(array);
Assert.assertEquals(expectedSumOfArray, actualSumOfArray);
}
@Test
public void givenAnIntArray_whenNotUsingStream_thenFindAverage() {
int[] array = { 1, 3, 4, 8, 19, 20 };
double expectedAvgOfArray = 9.17;
double actualAvgOfArray = SumAndAverageInArray.findAverageWithoutUsingStream(array);
Assert.assertEquals(expectedAvgOfArray, actualAvgOfArray, 0.0034);
}
@Test
public void givenAnIntArray_whenUsingStream_thenFindAverage() {
int[] array = { 1, 3, 4, 8, 19, 20 };
double expectedAvgOfArray = 9.17;
double actualAvgOfArray = SumAndAverageInArray.findAverageUsingStream(array);
Assert.assertEquals(expectedAvgOfArray, actualAvgOfArray, 0.0034);
}
}

20
core-java/src/test/java/com/baeldung/asciiart/AsciiArtTest.java Normal file
View File

@ -0,0 +1,20 @@
package com.baeldung.asciiart;
import java.awt.Font;
import org.junit.Test;
import com.baeldung.asciiart.AsciiArt.Settings;
public class AsciiArtTest {
@Test
public void givenTextWithAsciiCharacterAndSettings_shouldPrintAsciiArt() {
AsciiArt asciiArt = new AsciiArt();
String text = "BAELDUNG";
Settings settings = asciiArt.new Settings(new Font("SansSerif", Font.BOLD, 24), text.length() * 30, 30); // 30 pixel width per character
asciiArt.drawString(text, "*", settings);
}
}

22
core-java/src/test/java/com/baeldung/casting/CastingTest.java
View File

@ -11,6 +11,7 @@ public class CastingTest {
public void whenPrimitiveConverted_thenValueChanged() {
double myDouble = 1.1;
int myInt = (int) myDouble;
assertNotEquals(myDouble, myInt);
}
@ -55,4 +56,25 @@ public class CastingTest {
animals.add(new Dog());
new AnimalFeeder().uncheckedFeed(animals);
}
@Test
public void whenDowncastToCatWithCastMethod_thenMeowIsCalled() {
Animal animal = new Cat();
if (Cat.class.isInstance(animal)) {
Cat cat = Cat.class.cast(animal);
cat.meow();
}
}
@Test
public void whenParameterCat_thenOnlyCatsFed() {
List<Animal> animals = new ArrayList<>();
animals.add(new Cat());
animals.add(new Dog());
AnimalFeederGeneric<Cat> catFeeder = new AnimalFeederGeneric<Cat>(Cat.class);
List<Cat> fedAnimals = catFeeder.feed(animals);
assertTrue(fedAnimals.size() == 1);
assertTrue(fedAnimals.get(0) instanceof Cat);
}
}

92
core-java/src/test/java/com/baeldung/java/list/CustomListUnitTest.java
View File

@ -14,6 +14,58 @@ import java.util.List;
import org.junit.Test;
public class CustomListUnitTest {
@Test
public void givenEmptyList_whenIsEmpty_thenTrueIsReturned() {
List<Object> list = new CustomList<>();
assertTrue(list.isEmpty());
}
@Test
public void givenNonEmptyList_whenIsEmpty_thenFalseIsReturned() {
List<Object> list = new CustomList<>();
list.add(null);
assertFalse(list.isEmpty());
}
@Test
public void givenListWithAnElement_whenSize_thenOneIsReturned() {
List<Object> list = new CustomList<>();
list.add(null);
assertEquals(1, list.size());
}
@Test
public void givenListWithAnElement_whenGet_thenThatElementIsReturned() {
List<Object> list = new CustomList<>();
list.add("baeldung");
Object element = list.get(0);
assertEquals("baeldung", element);
}
@Test
public void givenEmptyList_whenElementIsAdded_thenGetReturnsThatElement() {
List<Object> list = new CustomList<>();
boolean succeeded = list.add(null);
assertTrue(succeeded);
}
@Test
public void givenListWithAnElement_whenAnotherIsAdded_thenGetReturnsBoth() {
List<Object> list = new CustomList<>();
list.add("baeldung");
list.add(".com");
Object element1 = list.get(0);
Object element2 = list.get(1);
assertEquals("baeldung", element1);
assertEquals(".com", element2);
}
@Test(expected = UnsupportedOperationException.class)
public void whenAddToSpecifiedIndex_thenExceptionIsThrown() {
new CustomList<>().add(0, null);
@ -64,44 +116,6 @@ public class CustomListUnitTest {
list.retainAll(collection);
}
@Test
public void givenEmptyList_whenSize_thenZeroIsReturned() {
List<Object> list = new CustomList<>();
assertEquals(0, list.size());
}
@Test
public void givenEmptyList_whenIsEmpty_thenTrueIsReturned() {
List<Object> list = new CustomList<>();
assertTrue(list.isEmpty());
}
@Test
public void givenEmptyList_whenElementIsAdded_thenGetReturnsThatElement() {
List<Object> list = new CustomList<>();
boolean succeeded = list.add("baeldung");
Object element = list.get(0);
assertTrue(succeeded);
assertEquals("baeldung", element);
}
@Test
public void givenListWithAnElement_whenAnotherIsAdded_thenGetReturnsBoth() {
List<Object> list = new CustomList<>();
boolean succeeded1 = list.add("baeldung");
boolean succeeded2 = list.add(".com");
Object element1 = list.get(0);
Object element2 = list.get(1);
assertTrue(succeeded1);
assertTrue(succeeded2);
assertEquals("baeldung", element1);
assertEquals(".com", element2);
}
@Test
public void givenEmptyList_whenContains_thenFalseIsReturned() {
List<Object> list = new CustomList<>();
@ -271,7 +285,7 @@ public class CustomListUnitTest {
}
@Test
public void whenIteratorNextIsCalledTwice_thenTheSecondReturnsFalse() {
public void whenIteratorHasNextIsCalledTwice_thenTheSecondReturnsFalse() {
List<Object> list = new CustomList<>();
list.add("baeldung");
Iterator<Object> iterator = list.iterator();

1
core-java/src/test/resources/testFolder/sample_file_2.in
View File

@ -1 +0,0 @@
Hello world !

3
core-kotlin/README.md
View File

@ -18,3 +18,6 @@
- [JUnit 5 for Kotlin Developers](http://www.baeldung.com/junit-5-kotlin)
- [Extension Methods in Kotlin](http://www.baeldung.com/kotlin-extension-methods)
- [Infix Functions in Kotlin](http://www.baeldung.com/kotlin-infix-functions)
- [Try-with-resources in Kotlin](http://www.baeldung.com/kotlin-try-with-resources)
- [HTTP Requests with Kotlin and khttp](http://www.baeldung.com/kotlin-khttp)
- [Kotlin Dependency Injection with Kodein](http://www.baeldung.com/kotlin-kodein-dependency-injection)

25
ethereumj/pom.xml
View File

@ -1,6 +1,5 @@
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.ethereumj</groupId>
<artifactId>ethereumj</artifactId>
@ -8,16 +7,11 @@
<version>1.0.0</version>
<name>ethereumj</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<tomcat.version>8.5.4</tomcat.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
<artifactId>parent-boot-5</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-boot-5</relativePath>
</parent>
<repositories>
@ -38,14 +32,12 @@
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<!--<scope>provided</scope>-->
</dependency>
<!-- Unit Testing -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>1.5.6.RELEASE</version>
<scope>test</scope>
</dependency>
@ -107,4 +99,11 @@
</build>
</profile>
</profiles>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<tomcat.version>8.5.4</tomcat.version>
</properties>
</project>

2
geotools/src/test/java/com/baeldung/geotools/GeoToolsUnitTest.java
View File

@ -3,7 +3,6 @@ package com.baeldung.geotools;
import static org.junit.Assert.assertNotNull;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.junit.Test;
import org.opengis.feature.simple.SimpleFeatureType;
@ -19,4 +18,5 @@ public class GeoToolsUnitTest {
assertNotNull(collection);
}
}

57
gradle/build.gradle
View File

@ -33,3 +33,60 @@ task execSecondTest {
}
println 'This will be executed during the configuration phase as well.'
}
task welcome {
doLast {
println 'Welcome on the Baeldung!'
}
}
task welcomeWithGroup {
group 'Sample category'
doLast {
println 'Welcome on the Baeldung!'
}
}
task welcomeWithGroupAndDescription {
group 'Sample category'
description 'Tasks which shows welcome message'
doLast {
println 'Welcome on the Baeldung!'
}
}
class PrintToolVersionTask extends DefaultTask {
String tool
@TaskAction
void printToolVersion() {
switch (tool) {
case 'java':
println System.getProperty("java.version")
break
case 'groovy':
println GroovySystem.version
break
default:
throw new IllegalArgumentException("Unknown tool")
}
}
}
task printJavaVersion(type : PrintToolVersionTask) {
tool 'java'
}
task printGroovyVersion(type : PrintToolVersionTask) {
tool 'groovy'
}
import com.baeldung.PrintToolVersionBuildSrcTask
task printJavaVersionBuildSrc(type : PrintToolVersionBuildSrcTask) {
tool 'java'
}
task printGroovyVersionBuildSrc(type : PrintToolVersionBuildSrcTask) {
tool 'groovy'
}

22
gradle/buildSrc/src/main/groovy/com/baeldung/PrintToolVersionBuildSrcTask.groovy Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung
import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction
class PrintToolVersionBuildSrcTask extends DefaultTask {
String tool
@TaskAction
void printToolVersion() {
switch (tool) {
case 'java':
println System.getProperty("java.version")
break
case 'groovy':
println GroovySystem.version
break
default:
throw new IllegalArgumentException("Unknown tool")
}
}
}

6
guava/pom.xml
View File

@ -44,12 +44,6 @@
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>java-hamcrest</artifactId>
<version>2.0.0.0</version>
<scope>test</scope>
</dependency>
</dependencies>

1
guest/remote-debugging/pom.xml
View File

@ -31,7 +31,6 @@
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>

61
hibernate5/src/main/java/com/baeldung/hibernate/lob/HibernateSessionUtil.java Normal file
View File

@ -0,0 +1,61 @@
package com.baeldung.hibernate.lob;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Properties;
import org.apache.commons.lang3.StringUtils;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.service.ServiceRegistry;
import com.baeldung.hibernate.lob.model.User;
public class HibernateSessionUtil {
private static SessionFactory sessionFactory;
private static String PROPERTY_FILE_NAME;
public static SessionFactory getSessionFactory() throws IOException {
return getSessionFactory(null);
}
public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
PROPERTY_FILE_NAME = propertyFileName;
if (sessionFactory == null) {
ServiceRegistry serviceRegistry = configureServiceRegistry();
sessionFactory = makeSessionFactory(serviceRegistry);
}
return sessionFactory;
}
private static SessionFactory makeSessionFactory(ServiceRegistry serviceRegistry) {
MetadataSources metadataSources = new MetadataSources(serviceRegistry);
metadataSources.addAnnotatedClass(User.class);
Metadata metadata = metadataSources.buildMetadata();
return metadata.getSessionFactoryBuilder()
.build();
}
private static ServiceRegistry configureServiceRegistry() throws IOException {
Properties properties = getProperties();
return new StandardServiceRegistryBuilder().applySettings(properties)
.build();
}
private static Properties getProperties() throws IOException {
Properties properties = new Properties();
URL propertiesURL = Thread.currentThread()
.getContextClassLoader()
.getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate.properties"));
try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
properties.load(inputStream);
}
return properties;
}
}

46
hibernate5/src/main/java/com/baeldung/hibernate/lob/model/User.java Normal file
View File

@ -0,0 +1,46 @@
package com.baeldung.hibernate.lob.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.Table;
@Entity
@Table(name="user")
public class User {
@Id
private String id;
@Column(name = "name", columnDefinition="VARCHAR(128)")
private String name;
@Lob
@Column(name = "photo", columnDefinition="BLOB")
private byte[] photo;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public byte[] getPhoto() {
return photo;
}
public void setPhoto(byte[] photo) {
this.photo = photo;
}
}

61
hibernate5/src/test/java/com/baeldung/hibernate/lob/LobTest.java Normal file
View File

@ -0,0 +1,61 @@
package com.baeldung.hibernate.lob;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import org.apache.commons.io.IOUtils;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.baeldung.hibernate.lob.model.User;
public class LobTest {
private Session session;
@Before
public void init(){
try {
session = HibernateSessionUtil.getSessionFactory("hibernate.properties")
.openSession();
} catch (HibernateException | IOException e) {
fail("Failed to initiate Hibernate Session [Exception:" + e.toString() + "]");
}
}
@After
public void close(){
if(session != null) session.close();
}
@Test
public void givenValidInsertLobObject_whenQueried_returnSameDataAsInserted(){
User user = new User();
try(InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("profile.png");) {
// Get Image file from the resource
if(inputStream == null) fail("Unable to get resources");
user.setId("1");
user.setName("User");
user.setPhoto(IOUtils.toByteArray(inputStream));
session.persist(user);
} catch (IOException e) {
fail("Unable to read input stream");
}
User result = session.find(User.class, "1");
assertNotNull("Query result is null", result);
assertEquals("User's name is invalid", user.getName(), result.getName() );
assertTrue("User's photo is corrupted", Arrays.equals(user.getPhoto(), result.getPhoto()) );
}
}

BIN
hibernate5/src/test/resources/profile.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 1.1 KiB

1
hystrix/pom.xml
View File

@ -34,7 +34,6 @@
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>

1
intelliJ/README.md
View File

@ -1 +0,0 @@
## Relevant articles:

3
java-lite/README.md
View File

@ -1,2 +1,3 @@
### Relevant Articles:
- [RESTFul CRUD application with JavaLite] ()
- [A Guide to JavaLite – Building a RESTful CRUD application](http://www.baeldung.com/javalite-rest)

3
java-rmi/README.md Normal file
View File

@ -0,0 +1,3 @@
### Relevant articles
- [Getting Started with Java RMI](http://www.baeldung.com/java-rmi)

14
java-spi/exchange-rate-api/pom.xml Normal file
View File

@ -0,0 +1,14 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>exchange-rate-api</artifactId>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>java-spi</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
</project>

42
java-spi/exchange-rate-api/src/main/java/com/baeldung/rate/ExchangeRate.java Normal file
View File

@ -0,0 +1,42 @@
package com.baeldung.rate;
import com.baeldung.rate.exception.ProviderNotFoundException;
import com.baeldung.rate.spi.ExchangeRateProvider;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ServiceLoader;
public final class ExchangeRate {
private static final String DEFAULT_PROVIDER = "com.baeldung.rate.spi.YahooFinanceExchangeRateProvider";
//All providers
public static List<ExchangeRateProvider> providers() {
List<ExchangeRateProvider> services = new ArrayList<>();
ServiceLoader<ExchangeRateProvider> loader = ServiceLoader.load(ExchangeRateProvider.class);
loader.forEach(exchangeRateProvider -> {
services.add(exchangeRateProvider);
});
return services;
}
//Default provider
public static ExchangeRateProvider provider() {
return provider(DEFAULT_PROVIDER);
}
//provider by name
public static ExchangeRateProvider provider(String providerName) {
ServiceLoader<ExchangeRateProvider> loader = ServiceLoader.load(ExchangeRateProvider.class);
Iterator<ExchangeRateProvider> it = loader.iterator();
while (it.hasNext()) {
ExchangeRateProvider provider = it.next();
if (providerName.equals(provider.getClass().getName())) {
return provider;
}
}
throw new ProviderNotFoundException("Exchange Rate provider " + providerName + " not found");
}
}

44
java-spi/exchange-rate-api/src/main/java/com/baeldung/rate/api/Quote.java Normal file
View File

@ -0,0 +1,44 @@
package com.baeldung.rate.api;
import java.math.BigDecimal;
import java.time.LocalDate;
public class Quote {
private String currency;
private BigDecimal ask;
private BigDecimal bid;
private LocalDate date;
//...
public String getCurrency() {
return currency;
}
public void setCurrency(String currency) {
this.currency = currency;
}
public BigDecimal getAsk() {
return ask;
}
public void setAsk(BigDecimal ask) {
this.ask = ask;
}
public BigDecimal getBid() {
return bid;
}
public void setBid(BigDecimal bid) {
this.bid = bid;
}
public LocalDate getDate() {
return date;
}
public void setDate(LocalDate date) {
this.date = date;
}
}

Some files were not shown because too many files have changed in this diff Show More