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Merge remote-tracking branch 'central/master'

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Graham Cox 2017-12-01 12:02:53 +00:00
parent 65d6e0127f 4672451564
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1457 changed files with 20703 additions and 910 deletions
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21
LICENSE Normal file
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@ -0,0 +1,21 @@
MIT License
Copyright (c) 2017 Eugen Paraschiv
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

5
README.md
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@ -1,9 +1,14 @@
The "REST with Spring" Classes
==============================
After 5 months of work, here's the Master Class of REST With Spring: <br/>
**[>> THE REST WITH SPRING MASTER CLASS](http://www.baeldung.com/rest-with-spring-course?utm_source=github&utm_medium=social&utm_content=tutorials&utm_campaign=rws#master-class)**
And here's the Master Class of Learn Spring Security: <br/>
**[>> LEARN SPRING SECURITY MASTER CLASS](http://www.baeldung.com/learn-spring-security-course?utm_source=github&utm_medium=social&utm_content=tutorials&utm_campaign=lss#master-class)**
Spring Tutorials
================

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algorithms/README.md
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@ -14,3 +14,4 @@
- [Bubble Sort in Java](http://www.baeldung.com/java-bubble-sort)
- [Introduction to JGraphT](http://www.baeldung.com/jgrapht)
- [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)

21
algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceBase.java
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@ -1,22 +1,15 @@
package com.baeldung.algorithms.editdistance;
import java.util.Arrays;
public class EditDistanceBase {
public static int costOfSubstitution(char a, char b) {
if (a == b) {
return 0;
}
return 1;
static int costOfSubstitution(char a, char b) {
return a == b ? 0 : 1;
}
public static int min(int... numbers) {
int min = Integer.MAX_VALUE;
for (int x : numbers) {
if (x < min)
min = x;
}
return min;
static int min(int... numbers) {
return Arrays.stream(numbers)
.min().orElse(Integer.MAX_VALUE);
}
}

7
algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceDynamicProgramming.java
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@ -2,7 +2,7 @@ package com.baeldung.algorithms.editdistance;
public class EditDistanceDynamicProgramming extends EditDistanceBase {
public static int calculate(String x, String y) {
static int calculate(String x, String y) {
int[][] dp = new int[x.length() + 1][y.length() + 1];
for (int i = 0; i <= x.length(); i++) {
@ -14,12 +14,13 @@ public class EditDistanceDynamicProgramming extends EditDistanceBase {
dp[i][j] = i;
else {
dp[i][j] = min(dp[i - 1][j - 1] + costOfSubstitution(x.charAt(i - 1), y.charAt(j - 1)), dp[i - 1][j] + 1, dp[i][j - 1] + 1);
dp[i][j] = min(dp[i - 1][j - 1]
+ costOfSubstitution(x.charAt(i - 1), y.charAt(j - 1)),
dp[i - 1][j] + 1, dp[i][j - 1] + 1);
}
}
}
return dp[x.length()][y.length()];
}
}

9
algorithms/src/main/java/com/baeldung/algorithms/editdistance/EditDistanceRecursive.java
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@ -2,13 +2,15 @@ package com.baeldung.algorithms.editdistance;
public class EditDistanceRecursive extends EditDistanceBase {
public static int calculate(String x, String y) {
static int calculate(String x, String y) {
if (x.isEmpty())
if (x.isEmpty()) {
return y.length();
}
if (y.isEmpty())
if (y.isEmpty()) {
return x.length();
}
int substitution = calculate(x.substring(1), y.substring(1)) + costOfSubstitution(x.charAt(0), y.charAt(0));
int insertion = calculate(x, y.substring(1)) + 1;
@ -16,5 +18,4 @@ public class EditDistanceRecursive extends EditDistanceBase {
return min(substitution, insertion, deletion);
}
}

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algorithms/src/main/java/com/baeldung/algorithms/prime/PrimeGenerator.java Normal file
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package com.baeldung.algorithms.prime;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
public class PrimeGenerator {
public static List<Integer> sieveOfEratosthenes(int n) {
final boolean prime[] = new boolean[n + 1];
Arrays.fill(prime, true);
for (int p = 2; p * p <= n; p++) {
if (prime[p]) {
for (int i = p * 2; i <= n; i += p)
prime[i] = false;
}
}
final List<Integer> primes = new LinkedList<>();
for (int i = 2; i <= n; i++) {
if (prime[i])
primes.add(i);
}
return primes;
}
public static List<Integer> primeNumbersBruteForce(int max) {
final List<Integer> primeNumbers = new LinkedList<Integer>();
for (int i = 2; i <= max; i++) {
if (isPrimeBruteForce(i)) {
primeNumbers.add(i);
}
}
return primeNumbers;
}
private static boolean isPrimeBruteForce(int x) {
for (int i = 2; i < x; i++) {
if (x % i == 0) {
return false;
}
}
return true;
}
public static List<Integer> primeNumbersTill(int max) {
return IntStream.rangeClosed(2, max)
.filter(x -> isPrime(x))
.boxed()
.collect(Collectors.toList());
}
private static boolean isPrime(int x) {
return IntStream.rangeClosed(2, (int) (Math.sqrt(x)))
.allMatch(n -> x % n != 0);
}
}

13
algorithms/src/test/java/com/baeldung/algorithms/editdistance/EditDistanceTest.java
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@ -1,16 +1,17 @@
package com.baeldung.algorithms.editdistance;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import static org.junit.Assert.assertEquals;
@RunWith(Parameterized.class)
public class EditDistanceTest extends EditDistanceDataProvider {
String x;
String y;
int result;
private String x;
private String y;
private int result;
public EditDistanceTest(String a, String b, int res) {
super();
@ -21,11 +22,11 @@ public class EditDistanceTest extends EditDistanceDataProvider {
@Test
public void testEditDistance_RecursiveImplementation() {
Assert.assertEquals(result, EditDistanceRecursive.calculate(x, y));
assertEquals(result, EditDistanceRecursive.calculate(x, y));
}
@Test
public void testEditDistance_givenDynamicProgrammingImplementation() {
Assert.assertEquals(result, EditDistanceDynamicProgramming.calculate(x, y));
assertEquals(result, EditDistanceDynamicProgramming.calculate(x, y));
}
}

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algorithms/src/test/java/com/baeldung/algorithms/prime/PrimeGeneratorTest.java Normal file
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package com.baeldung.algorithms.prime;
import static com.baeldung.algorithms.prime.PrimeGenerator.*;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
public class PrimeGeneratorTest {
@Test
public void whenBruteForced_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersBruteForce(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenOptimized_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersTill(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenSieveOfEratosthenes_returnsSuccessfully() {
final List<Integer> primeNumbers = sieveOfEratosthenes(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
}

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apache-poi/src/main/java/com/baeldung/poi/powerpoint/PowerPointHelper.java Normal file
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package com.baeldung.poi.powerpoint;
import org.apache.poi.sl.usermodel.AutoNumberingScheme;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.sl.usermodel.TableCell;
import org.apache.poi.sl.usermodel.TextParagraph;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xslf.usermodel.*;
import java.awt.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Helper class for the PowerPoint presentation creation
*/
public class PowerPointHelper {
/**
* Read an existing presentation
*
* @param fileLocation
* File location of the presentation
* @return instance of {@link XMLSlideShow}
* @throws IOException
*/
public XMLSlideShow readingExistingSlideShow(String fileLocation) throws IOException {
return new XMLSlideShow(new FileInputStream(fileLocation));
}
/**
* Create a sample presentation
*
* @param fileLocation
* File location of the presentation
* @throws IOException
*/
public void createPresentation(String fileLocation) throws IOException {
// Create presentation
XMLSlideShow ppt = new XMLSlideShow();
XSLFSlideMaster defaultMaster = ppt.getSlideMasters().get(0);
// Retriving the slide layout
XSLFSlideLayout layout = defaultMaster.getLayout(SlideLayout.TITLE_ONLY);
// Creating the 1st slide
XSLFSlide slide1 = ppt.createSlide(layout);
XSLFTextShape title = slide1.getPlaceholder(0);
// Clearing text to remove the predefined one in the template
title.clearText();
XSLFTextParagraph p = title.addNewTextParagraph();
XSLFTextRun r1 = p.addNewTextRun();
r1.setText("Baeldung");
r1.setFontColor(new Color(78, 147, 89));
r1.setFontSize(48.);
// Add Image
ClassLoader classLoader = getClass().getClassLoader();
byte[] pictureData = IOUtils.toByteArray(new FileInputStream(classLoader.getResource("logo-leaf.png").getFile()));
XSLFPictureData pd = ppt.addPicture(pictureData, PictureData.PictureType.PNG);
XSLFPictureShape picture = slide1.createPicture(pd);
picture.setAnchor(new Rectangle(320, 230, 100, 92));
// Creating 2nd slide
layout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide slide2 = ppt.createSlide(layout);
// setting the tile
title = slide2.getPlaceholder(0);
title.clearText();
XSLFTextRun r = title.addNewTextParagraph().addNewTextRun();
r.setText("Baeldung");
// Adding the link
XSLFHyperlink link = r.createHyperlink();
link.setAddress("http://www.baeldung.com");
// setting the content
XSLFTextShape content = slide2.getPlaceholder(1);
content.clearText(); // unset any existing text
content.addNewTextParagraph().addNewTextRun().setText("First paragraph");
content.addNewTextParagraph().addNewTextRun().setText("Second paragraph");
content.addNewTextParagraph().addNewTextRun().setText("Third paragraph");
// Creating 3rd slide - List
layout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide slide3 = ppt.createSlide(layout);
title = slide3.getPlaceholder(0);
title.clearText();
r = title.addNewTextParagraph().addNewTextRun();
r.setText("Lists");
content = slide3.getPlaceholder(1);
content.clearText();
XSLFTextParagraph p1 = content.addNewTextParagraph();
p1.setIndentLevel(0);
p1.setBullet(true);
r1 = p1.addNewTextRun();
r1.setText("Bullet");
// the next three paragraphs form an auto-numbered list
XSLFTextParagraph p2 = content.addNewTextParagraph();
p2.setBulletAutoNumber(AutoNumberingScheme.alphaLcParenRight, 1);
p2.setIndentLevel(1);
XSLFTextRun r2 = p2.addNewTextRun();
r2.setText("Numbered List Item - 1");
// Creating 4th slide
XSLFSlide slide4 = ppt.createSlide();
createTable(slide4);
// Save presentation
FileOutputStream out = new FileOutputStream(fileLocation);
ppt.write(out);
out.close();
// Closing presentation
ppt.close();
}
/**
* Delete a slide from the presentation
*
* @param ppt
* The presentation
* @param slideNumber
* The number of the slide to be deleted (0-based)
*/
public void deleteSlide(XMLSlideShow ppt, int slideNumber) {
ppt.removeSlide(slideNumber);
}
/**
* Re-order the slides inside a presentation
*
* @param ppt
* The presentation
* @param slideNumber
* The number of the slide to move
* @param newSlideNumber
* The new position of the slide (0-base)
*/
public void reorderSlide(XMLSlideShow ppt, int slideNumber, int newSlideNumber) {
List<XSLFSlide> slides = ppt.getSlides();
XSLFSlide secondSlide = slides.get(slideNumber);
ppt.setSlideOrder(secondSlide, newSlideNumber);
}
/**
* Retrieve the placeholder inside a slide
*
* @param slide
* The slide
* @return List of placeholder inside a slide
*/
public List<XSLFShape> retrieveTemplatePlaceholders(XSLFSlide slide) {
List<XSLFShape> placeholders = new ArrayList<>();
for (XSLFShape shape : slide.getShapes()) {
if (shape instanceof XSLFAutoShape) {
placeholders.add(shape);
}
}
return placeholders;
}
/**
* Create a table
*
* @param slide
* Slide
*/
private void createTable(XSLFSlide slide) {
XSLFTable tbl = slide.createTable();
tbl.setAnchor(new Rectangle(50, 50, 450, 300));
int numColumns = 3;
int numRows = 5;
// header
XSLFTableRow headerRow = tbl.addRow();
headerRow.setHeight(50);
for (int i = 0; i < numColumns; i++) {
XSLFTableCell th = headerRow.addCell();
XSLFTextParagraph p = th.addNewTextParagraph();
p.setTextAlign(TextParagraph.TextAlign.CENTER);
XSLFTextRun r = p.addNewTextRun();
r.setText("Header " + (i + 1));
r.setBold(true);
r.setFontColor(Color.white);
th.setFillColor(new Color(79, 129, 189));
th.setBorderWidth(TableCell.BorderEdge.bottom, 2.0);
th.setBorderColor(TableCell.BorderEdge.bottom, Color.white);
// all columns are equally sized
tbl.setColumnWidth(i, 150);
}
// data
for (int rownum = 0; rownum < numRows; rownum++) {
XSLFTableRow tr = tbl.addRow();
tr.setHeight(50);
for (int i = 0; i < numColumns; i++) {
XSLFTableCell cell = tr.addCell();
XSLFTextParagraph p = cell.addNewTextParagraph();
XSLFTextRun r = p.addNewTextRun();
r.setText("Cell " + (i * rownum + 1));
if (rownum % 2 == 0) {
cell.setFillColor(new Color(208, 216, 232));
} else {
cell.setFillColor(new Color(233, 247, 244));
}
}
}
}
}

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apache-poi/src/test/java/com/baeldung/poi/powerpoint/PowerPointIntegrationTest.java Normal file
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@ -0,0 +1,77 @@
package com.baeldung.poi.powerpoint;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFShape;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.io.File;
import java.util.List;
public class PowerPointIntegrationTest {
private PowerPointHelper pph;
private String fileLocation;
private static final String FILE_NAME = "presentation.pptx";
@Before
public void setUp() throws Exception {
File currDir = new File(".");
String path = currDir.getAbsolutePath();
fileLocation = path.substring(0, path.length() - 1) + FILE_NAME;
pph = new PowerPointHelper();
pph.createPresentation(fileLocation);
}
@Test
public void whenReadingAPresentation_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
Assert.assertNotNull(xmlSlideShow);
Assert.assertEquals(4, xmlSlideShow.getSlides().size());
}
@Test
public void whenRetrievingThePlaceholdersForEachSlide_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
List<XSLFShape> onlyTitleSlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(0));
List<XSLFShape> titleAndBodySlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(1));
List<XSLFShape> emptySlidePlaceholdes = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(3));
Assert.assertEquals(1, onlyTitleSlidePlaceholders.size());
Assert.assertEquals(2, titleAndBodySlidePlaceholders.size());
Assert.assertEquals(0, emptySlidePlaceholdes.size());
}
@Test
public void whenSortingSlides_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
XSLFSlide slide4 = xmlSlideShow.getSlides().get(3);
pph.reorderSlide(xmlSlideShow, 3, 1);
Assert.assertEquals(slide4, xmlSlideShow.getSlides().get(1));
}
@Test
public void givenPresentation_whenDeletingASlide_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
pph.deleteSlide(xmlSlideShow, 3);
Assert.assertEquals(3, xmlSlideShow.getSlides().size());
}
@After
public void tearDown() throws Exception {
File testFile = new File(fileLocation);
if (testFile.exists()) {
testFile.delete();
}
pph = null;
}
}

3
apache-spark/README.md Normal file
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@ -0,0 +1,3 @@
### Relevant articles
- [Introduction to Apache Spark](http://www.baeldung.com/apache-spark)

49
apache-spark/src/main/java/com/baeldung/WordCount.java
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@ -17,37 +17,24 @@ import scala.Tuple2;
public class WordCount {
private static final Pattern SPACE = Pattern.compile(" ");
public static void main(String[] args) throws Exception {
if (args.length < 1) {
System.err.println("Usage: JavaWordCount <file>");
System.exit(1);
if (args.length < 1) {
System.err.println("Usage: JavaWordCount <file>");
System.exit(1);
}
SparkConf sparkConf = new SparkConf().setAppName("JavaWordCount")
.setMaster("local");
JavaSparkContext ctx = new JavaSparkContext(sparkConf);
JavaRDD<String> lines = ctx.textFile(args[0], 1);
JavaRDD<String> words = lines.flatMap(s -> Arrays.asList(SPACE.split(s)).iterator());
JavaPairRDD<String, Integer> wordAsTuple = words.mapToPair(word -> new Tuple2<>(word, 1));
JavaPairRDD<String, Integer> wordWithCount = wordAsTuple.reduceByKey((Integer i1, Integer i2)->i1 + i2);
List<Tuple2<String, Integer>> output = wordWithCount.collect();
for (Tuple2<?, ?> tuple : output) {
System.out.println(tuple._1() + ": " + tuple._2());
}
ctx.stop();
}
SparkConf sparkConf = new SparkConf().setAppName("JavaWordCount").setMaster("local");
JavaSparkContext ctx = new JavaSparkContext(sparkConf);
JavaRDD<String> lines = ctx.textFile(args[0], 1);
JavaRDD<String> words = lines.flatMap(s -> Arrays.asList(SPACE.split(s)).iterator());
JavaPairRDD<String, Integer> ones = words.mapToPair(
new PairFunction<String, String, Integer>() {
@Override
public Tuple2<String, Integer> call(String s) {
return new Tuple2<>(s, 1);
}
});
JavaPairRDD<String, Integer> counts = ones.reduceByKey(
new Function2<Integer, Integer, Integer>() {
@Override
public Integer call(Integer i1, Integer i2) {
return i1 + i2;
}
});
List<Tuple2<String, Integer>> output = counts.collect();
for (Tuple2<?, ?> tuple : output) {
System.out.println(tuple._1() + ": " + tuple._2());
}
ctx.stop();
}
}

8
bootique/dependency-reduced-pom.xml
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@ -28,8 +28,14 @@
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<version>4.12</version>
<scope>test</scope>
<exclusions>
<exclusion>
<artifactId>hamcrest-core</artifactId>
<groupId>org.hamcrest</groupId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<dependencyManagement>

1
cas-secured-app/README.md
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@ -1 +0,0 @@
## Relevant articles:

BIN
cas-server/etc/cas/thekeystore
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Binary file not shown.

BIN
cas-server/etc/cas/thekeystore.crt
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27
cas/cas-secured-app/.gitignore vendored Normal file
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@ -0,0 +1,27 @@
target/
!.mvn/wrapper/maven-wrapper.jar
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
nbproject/private/
build/
nbbuild/
dist/
nbdist/
.nb-gradle/
/.mvn/
/mvnw
/mvnw.cmd

19
cas-secured-app/pom.xml → cas/cas-secured-app/pom.xml
View File

@ -65,6 +65,24 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
<configuration>
<forkCount>3</forkCount>
<reuseForks>true</reuseForks>
<excludes>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
<exclude>**/JdbcTest.java</exclude>
<exclude>**/*LiveTest.java</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
@ -107,4 +125,5 @@
</pluginRepositories>
</project>

8
cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredAppApplication.java → cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/CasSecuredAppApplication.java
View File

@ -40,14 +40,14 @@ public class CasSecuredAppApplication {
@Primary
public AuthenticationEntryPoint authenticationEntryPoint(ServiceProperties sP) {
CasAuthenticationEntryPoint entryPoint = new CasAuthenticationEntryPoint();
entryPoint.setLoginUrl("https://localhost:8443/cas/login");
entryPoint.setLoginUrl("https://localhost:6443/cas/login");
entryPoint.setServiceProperties(sP);
return entryPoint;
}
@Bean
public TicketValidator ticketValidator() {
return new Cas30ServiceTicketValidator("https://localhost:8443/cas");
return new Cas30ServiceTicketValidator("https://localhost:6443/cas");
}
@Bean
@ -71,7 +71,7 @@ public class CasSecuredAppApplication {
@Bean
public LogoutFilter logoutFilter() {
LogoutFilter logoutFilter = new LogoutFilter(
"https://localhost:8443/cas/logout", securityContextLogoutHandler());
"https://localhost:6443/cas/logout", securityContextLogoutHandler());
logoutFilter.setFilterProcessesUrl("/logout/cas");
return logoutFilter;
}
@ -79,7 +79,7 @@ public class CasSecuredAppApplication {
@Bean
public SingleSignOutFilter singleSignOutFilter() {
SingleSignOutFilter singleSignOutFilter = new SingleSignOutFilter();
singleSignOutFilter.setCasServerUrlPrefix("https://localhost:8443/cas");
singleSignOutFilter.setCasServerUrlPrefix("https://localhost:6443/cas");
singleSignOutFilter.setIgnoreInitConfiguration(true);
return singleSignOutFilter;
}

0
cas-secured-app/src/main/java/com/baeldung/cassecuredapp/config/SecurityConfig.java → cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/config/SecurityConfig.java
View File

0
cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/AuthController.java → cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/AuthController.java
View File

0
cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/IndexController.java → cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/IndexController.java
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0
cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/SecuredPageController.java → cas/cas-secured-app/src/main/java/com/baeldung/cassecuredapp/controllers/SecuredPageController.java
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0
cas-secured-app/src/main/resources/application.properties → cas/cas-secured-app/src/main/resources/application.properties
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0
cas-secured-app/src/main/resources/templates/auth/logout.ftl → cas/cas-secured-app/src/main/resources/templates/auth/logout.ftl
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0
cas-secured-app/src/main/resources/templates/index.ftl → cas/cas-secured-app/src/main/resources/templates/index.ftl
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0
cas-secured-app/src/main/resources/templates/secure/index.ftl → cas/cas-secured-app/src/main/resources/templates/secure/index.ftl
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2
cas-secured-app/src/test/java/com/baeldung/cassecuredapp/CasSecuredAppApplicationTests.java → cas/cas-secured-app/src/test/java/com/baeldung/cassecuredapp/CasSecuredAppApplicationIntegrationTest.java
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@ -7,7 +7,7 @@ import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class CasSecuredAppApplicationTests {
public class CasSecuredAppApplicationIntegrationTest {
@Test
public void contextLoads() {

0
cas-server/.gitignore → cas/cas-server/.gitignore vendored
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0
cas-server/LICENSE.txt → cas/cas-server/LICENSE.txt
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0
cas-server/README.md → cas/cas-server/README.md
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0
cas-server/build.cmd → cas/cas-server/build.cmd
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0
cas-server/build.sh → cas/cas-server/build.sh
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0
cas-server/etc/cas/config/application.yml → cas/cas-server/etc/cas/config/application.yml
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0
cas-server/etc/cas/config/cas.properties → cas/cas-server/etc/cas/config/cas.properties
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0
cas-server/etc/cas/config/log4j2.xml → cas/cas-server/etc/cas/config/log4j2.xml
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0
cas-server/maven/maven-wrapper.properties → cas/cas-server/maven/maven-wrapper.properties
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0
cas-server/mvnw → cas/cas-server/mvnw vendored
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0
cas-server/mvnw.bat → cas/cas-server/mvnw.bat
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0
cas-server/pom.xml → cas/cas-server/pom.xml
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18
cas-server/src/main/resources/application.properties → cas/cas-server/src/main/resources/application.properties
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@ -2,9 +2,9 @@
# CAS Server Context Configuration
#
server.context-path=/cas
server.port=8443
server.port=6443
server.ssl.key-store=file:/etc/cas/thekeystore
server.ssl.key-store=classpath:/etc/cas/thekeystore
server.ssl.key-store-password=changeit
server.ssl.key-password=changeit
# server.ssl.ciphers=
@ -40,6 +40,12 @@ spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true
spring.http.encoding.force=true
##
#CAS CONFIG LOCATION
#
cas.standalone.config=classpath:/etc/cas/config
##
# CAS Cloud Bus Configuration
#
@ -82,6 +88,7 @@ spring.thymeleaf.mode=HTML
# CAS Log4j Configuration
#
# logging.config=file:/etc/cas/log4j2.xml
server.context-parameters.isLog4jAutoInitializationDisabled=true
##
@ -102,11 +109,12 @@ cas.authn.jdbc.query[0].sql=SELECT * FROM users WHERE email = ?
cas.authn.jdbc.query[0].url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
cas.authn.jdbc.query[0].dialect=org.hibernate.dialect.MySQLDialect
cas.authn.jdbc.query[0].user=root
cas.authn.jdbc.query[0].password=
cas.authn.jdbc.query[0].password=root
cas.authn.jdbc.query[0].ddlAuto=none
cas.authn.jdbc.query[0].driverClass=com.mysql.jdbc.Driver
#cas.authn.jdbc.query[0].driverClass=com.mysql.jdbc.Driver
cas.authn.jdbc.query[0].driverClass=com.mysql.cj.jdbc.Driver
cas.authn.jdbc.query[0].fieldPassword=password
cas.authn.jdbc.query[0].passwordEncoder.type=BCRYPT
cas.authn.jdbc.query[0].passwordEncoder.type=NONE
##

7
cas-server/src/main/resources/cas.properties → cas/cas-server/src/main/resources/cas.properties
View File

@ -1,16 +1,15 @@
cas.server.name: https://localhost:8443
cas.server.prefix: https://localhost:8443/cas
cas.server.name: https://localhost:6443
cas.server.prefix: https://localhost:643/cas
cas.adminPagesSecurity.ip=127\.0\.0\.1
logging.config: file:/etc/cas/config/log4j2.xml
cas.serviceRegistry.initFromJson=true
cas.serviceRegistry.config.location=classpath:/services
cas.authn.accept.users=
cas.authn.accept.name=
#CAS Database Authentication Property
# cas.authn.jdbc.query[0].healthQuery=

16
cas/cas-server/src/main/resources/create_test_db_and_users_tbl.sql Normal file
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@ -0,0 +1,16 @@
-- Dumping database structure for test
CREATE DATABASE IF NOT EXISTS `test` /*!40100 DEFAULT CHARACTER SET latin1 */;
USE `test`;
-- Dumping structure for table test.users
CREATE TABLE IF NOT EXISTS `users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`email` varchar(50) DEFAULT NULL,
`password` text DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1;
/*!40000 ALTER TABLE `users` DISABLE KEYS */;
INSERT INTO `users` (`id`, `email`, `password`) VALUES
(1, 'test@test.com', 'Mellon');
/*!40000 ALTER TABLE `users` ENABLE KEYS */;

2
cas/cas-server/src/main/resources/etc/cas/config/application.yml Normal file
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@ -0,0 +1,2 @@
info:
description: CAS Configuration

7
cas/cas-server/src/main/resources/etc/cas/config/cas.properties Normal file
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@ -0,0 +1,7 @@
cas.server.name: https://cas.example.org:8443
cas.server.prefix: https://cas.example.org:8443/cas
cas.adminPagesSecurity.ip=127\.0\.0\.1
logging.config: file:/etc/cas/config/log4j2.xml
# cas.serviceRegistry.config.location: classpath:/services

117
cas/cas-server/src/main/resources/etc/cas/config/log4j2.xml Normal file
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@ -0,0 +1,117 @@
<?xml version="1.0" encoding="UTF-8" ?>
<!-- Specify the refresh internal in seconds. -->
<Configuration monitorInterval="5" packages="org.apereo.cas.logging">
<Properties>
<!--
Default log directory is the current directory but that can be overridden with -Dcas.log.dir=<logdir>
Or you can change this property to a new default
-->
<Property name="cas.log.dir" >.</Property>
<!-- To see more CAS specific logging, adjust this property to info or debug or run server with -Dcas.log.leve=debug -->
<Property name="cas.log.level" >warn</Property>
</Properties>
<Appenders>
<Console name="console" target="SYSTEM_OUT">
<PatternLayout pattern="%d %p [%c] - &lt;%m&gt;%n"/>
</Console>
<RollingFile name="file" fileName="${sys:cas.log.dir}/cas.log" append="true"
filePattern="${sys:cas.log.dir}/cas-%d{yyyy-MM-dd-HH}-%i.log">
<PatternLayout pattern="%d %p [%c] - &lt;%m&gt;%n"/>
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="10 MB"/>
<TimeBasedTriggeringPolicy />
</Policies>
</RollingFile>
<RollingFile name="auditlogfile" fileName="${sys:cas.log.dir}/cas_audit.log" append="true"
filePattern="${sys:cas.log.dir}/cas_audit-%d{yyyy-MM-dd-HH}-%i.log">
<PatternLayout pattern="%d %p [%c] - %m%n"/>
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="10 MB"/>
<TimeBasedTriggeringPolicy />
</Policies>
</RollingFile>
<RollingFile name="perfFileAppender" fileName="${sys:cas.log.dir}/perfStats.log" append="true"
filePattern="${sys:cas.log.dir}/perfStats-%d{yyyy-MM-dd-HH}-%i.log">
<PatternLayout pattern="%m%n"/>
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="10 MB"/>
<TimeBasedTriggeringPolicy />
</Policies>
</RollingFile>
<CasAppender name="casAudit">
<AppenderRef ref="auditlogfile" />
</CasAppender>
<CasAppender name="casFile">
<AppenderRef ref="file" />
</CasAppender>
<CasAppender name="casConsole">
<AppenderRef ref="console" />
</CasAppender>
<CasAppender name="casPerf">
<AppenderRef ref="perfFileAppender" />
</CasAppender>
</Appenders>
<Loggers>
<!-- If adding a Logger with level set higher than warn, make category as selective as possible -->
<!-- Loggers inherit appenders from Root Logger unless additivity is false -->
<AsyncLogger name="org.apereo" level="${sys:cas.log.level}" includeLocation="true"/>
<AsyncLogger name="org.apereo.services.persondir" level="${sys:cas.log.level}" includeLocation="true"/>
<AsyncLogger name="org.apereo.cas.web.flow" level="info" includeLocation="true"/>
<AsyncLogger name="org.apache" level="warn" />
<AsyncLogger name="org.apache.http" level="error" />
<AsyncLogger name="org.springframework" level="warn" />
<AsyncLogger name="org.springframework.cloud.server" level="warn" />
<AsyncLogger name="org.springframework.cloud.client" level="warn" />
<AsyncLogger name="org.springframework.cloud.bus" level="warn" />
<AsyncLogger name="org.springframework.aop" level="warn" />
<AsyncLogger name="org.springframework.boot" level="warn" />
<AsyncLogger name="org.springframework.boot.actuate.autoconfigure" level="warn" />
<AsyncLogger name="org.springframework.webflow" level="warn" />
<AsyncLogger name="org.springframework.session" level="warn" />
<AsyncLogger name="org.springframework.amqp" level="error" />
<AsyncLogger name="org.springframework.integration" level="warn" />
<AsyncLogger name="org.springframework.messaging" level="warn" />
<AsyncLogger name="org.springframework.web" level="warn" />
<AsyncLogger name="org.springframework.orm.jpa" level="warn" />
<AsyncLogger name="org.springframework.scheduling" level="warn" />
<AsyncLogger name="org.springframework.context.annotation" level="error" />
<AsyncLogger name="org.springframework.boot.devtools" level="error" />
<AsyncLogger name="org.springframework.web.socket" level="warn" />
<AsyncLogger name="org.thymeleaf" level="warn" />
<AsyncLogger name="org.pac4j" level="warn" />
<AsyncLogger name="org.opensaml" level="warn"/>
<AsyncLogger name="net.sf.ehcache" level="warn" />
<AsyncLogger name="com.couchbase" level="warn" includeLocation="true"/>
<AsyncLogger name="com.ryantenney.metrics" level="warn" />
<AsyncLogger name="net.jradius" level="warn" />
<AsyncLogger name="org.openid4java" level="warn" />
<AsyncLogger name="org.ldaptive" level="warn" />
<AsyncLogger name="com.hazelcast" level="warn" />
<AsyncLogger name="org.jasig.spring" level="warn" />
<!-- Log perf stats only to perfStats.log -->
<AsyncLogger name="perfStatsLogger" level="info" additivity="false" includeLocation="true">
<AppenderRef ref="casPerf"/>
</AsyncLogger>
<!-- Log audit to all root appenders, and also to audit log (additivity is not false) -->
<AsyncLogger name="org.apereo.inspektr.audit.support" level="info" includeLocation="true" >
<AppenderRef ref="casAudit"/>
</AsyncLogger>
<!-- All Loggers inherit appenders specified here, unless additivity="false" on the Logger -->
<AsyncRoot level="warn">
<AppenderRef ref="casFile"/>
<!--
For deployment to an application server running as service,
delete the casConsole appender below
-->
<AppenderRef ref="casConsole"/>
</AsyncRoot>
</Loggers>
</Configuration>

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cas/cas-server/src/main/resources/etc/cas/thekeystore.crt Normal file
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0
cas-server/src/main/resources/services/casSecuredApp.json → cas/cas-server/src/main/resources/services/casSecuredApp.json
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2
core-java-8/README.md
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@ -30,3 +30,5 @@
- [The Difference Between map() and flatMap()](http://www.baeldung.com/java-difference-map-and-flatmap)
- [Merging Streams in Java](http://www.baeldung.com/java-merge-streams)
- [“Stream has already been operated upon or closed” Exception in Java](http://www.baeldung.com/java-stream-operated-upon-or-closed-exception)
- [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones)
- [Copy a File with Java](http://www.baeldung.com/java-copy-file)

5
core-java-8/src/main/java/com/baeldung/annotations/ClassWithAnnotation.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.annotations;
@Deprecated
class ClassWithAnnotation {
}

9
core-java-8/src/main/java/com/baeldung/annotations/ClassWithDeprecatedMethod.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class ClassWithDeprecatedMethod {
@Deprecated
static void deprecatedMethod() {
}
}

11
core-java-8/src/main/java/com/baeldung/annotations/ClassWithSafeVarargs.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.annotations;
class ClassWithSafeVarargs<T> {
@SafeVarargs
final void iterateOverVarargs(T... args) {
for (T x : args) {
// do stuff with x
}
}
}

9
core-java-8/src/main/java/com/baeldung/annotations/ClassWithSuppressWarnings.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class ClassWithSuppressWarnings {
@SuppressWarnings("deprecation")
void useDeprecatedMethod() {
ClassWithDeprecatedMethod.deprecatedMethod(); // no warning is generated here
}
}

8
core-java-8/src/main/java/com/baeldung/annotations/IntConsumer.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.annotations;
@FunctionalInterface
interface IntConsumer {
void accept(Integer number);
}

8
core-java-8/src/main/java/com/baeldung/annotations/Interval.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.annotations;
import java.lang.annotation.Repeatable;
@Repeatable(Intervals.class)
@interface Interval {
int hour() default 1;
}

9
core-java-8/src/main/java/com/baeldung/annotations/IntervalUsage.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
public class IntervalUsage {
@Interval(hour = 17)
@Interval(hour = 13)
void doPeriodicCleanup() {
}
}

5
core-java-8/src/main/java/com/baeldung/annotations/Intervals.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.annotations;
@interface Intervals {
Interval[] value();
}

11
core-java-8/src/main/java/com/baeldung/annotations/MyAnnotation.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.annotations;
import java.lang.annotation.*;
@Inherited
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.LOCAL_VARIABLE, ElementType.FIELD})
@interface MyAnnotation {
}

16
core-java-8/src/main/java/com/baeldung/annotations/MyAnnotationTarget.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.annotations;
class MyAnnotationTarget {
// this is OK
@MyAnnotation
String someField;
// @MyAnnotation <- this is invalid usage!
void doSomething() {
// this also works
@MyAnnotation
String localVariable;
}
}

6
core-java-8/src/main/java/com/baeldung/annotations/MyOperation.java Normal file
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@ -0,0 +1,6 @@
package com.baeldung.annotations;
interface MyOperation {
void perform();
}

9
core-java-8/src/main/java/com/baeldung/annotations/MyOperationImpl.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class MyOperationImpl implements MyOperation {
@Override
public void perform() {
}
}

59
core-java-8/src/main/java/com/baeldung/prime/PrimeGenerator.java Normal file
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@ -0,0 +1,59 @@
package com.baeldung.prime;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
public class PrimeGenerator {
public static List<Integer> sieveOfEratosthenes(int n) {
final boolean prime[] = new boolean[n + 1];
Arrays.fill(prime, true);
for (int p = 2; p * p <= n; p++) {
if (prime[p]) {
for (int i = p * 2; i <= n; i += p)
prime[i] = false;
}
}
final List<Integer> primes = new LinkedList<>();
for (int i = 2; i <= n; i++) {
if (prime[i])
primes.add(i);
}
return primes;
}
public static List<Integer> primeNumbersBruteForce(int max) {
final List<Integer> primeNumbers = new LinkedList<Integer>();
for (int i = 2; i <= max; i++) {
if (isPrimeBruteForce(i)) {
primeNumbers.add(i);
}
}
return primeNumbers;
}
private static boolean isPrimeBruteForce(int x) {
for (int i = 2; i < x; i++) {
if (x % i == 0) {
return false;
}
}
return true;
}
public static List<Integer> primeNumbersTill(int max) {
return IntStream.rangeClosed(2, max)
.filter(x -> isPrime(x))
.boxed()
.collect(Collectors.toList());
}
private static boolean isPrime(int x) {
return IntStream.rangeClosed(2, (int) (Math.sqrt(x)))
.allMatch(n -> x % n != 0);
}
}

55
core-java-8/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplay.java Normal file
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@ -0,0 +1,55 @@
package com.baeldung.timezonedisplay;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
public class TimezoneDisplay {
public enum OffsetBase {
GMT, UTC
}
public List<String> getTimeZoneList(OffsetBase base) {
Set<String> availableZoneIds = ZoneId.getAvailableZoneIds();
LocalDateTime now = LocalDateTime.now();
return availableZoneIds
.stream()
.map(ZoneId::of)
.sorted(new ZoneComparator())
.map(id -> String.format("(%s%s) %s", base, getOffset(now, id), id.getId()))
.collect(Collectors.toList());
}
private String getOffset(LocalDateTime dateTime, ZoneId id) {
return dateTime
.atZone(id)
.getOffset()
.getId()
.replace("Z", "+00:00");
}
private class ZoneComparator implements Comparator<ZoneId> {
@Override
public int compare(ZoneId zoneId1, ZoneId zoneId2) {
LocalDateTime now = LocalDateTime.now();
ZoneOffset offset1 = now
.atZone(zoneId1)
.getOffset();
ZoneOffset offset2 = now
.atZone(zoneId2)
.getOffset();
return offset1.compareTo(offset2);
}
}
}

18
core-java-8/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplayApp.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.timezonedisplay;
import java.util.List;
public class TimezoneDisplayApp {
public static void main(String... args) {
TimezoneDisplay display = new TimezoneDisplay();
System.out.println("Time zones in UTC:");
List<String> utc = display.getTimeZoneList(TimezoneDisplay.OffsetBase.UTC);
utc.forEach(System.out::println);
System.out.println("Time zones in GMT:");
List<String> gmt = display.getTimeZoneList(TimezoneDisplay.OffsetBase.GMT);
gmt.forEach(System.out::println);
}
}

28
core-java-8/src/test/java/com/baeldung/prime/PrimeGeneratorTest.java Normal file
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@ -0,0 +1,28 @@
package com.baeldung.prime;
import static com.baeldung.prime.PrimeGenerator.*;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
public class PrimeGeneratorTest {
@Test
public void whenBruteForced_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersBruteForce(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenOptimized_returnsSuccessfully() {
final List<Integer> primeNumbers = primeNumbersTill(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
@Test
public void whenSieveOfEratosthenes_returnsSuccessfully() {
final List<Integer> primeNumbers = sieveOfEratosthenes(20);
assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
}
}

39
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateConverter.java Normal file
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@ -0,0 +1,39 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDate.
*
* @author abialas
*
*/
public class DateToLocalDateConverter {
public static LocalDate convertToLocalDateViaInstant(Date dateToConvert) {
return dateToConvert.toInstant()
.atZone(ZoneId.systemDefault())
.toLocalDate();
}
public static LocalDate convertToLocalDateViaSqlDate(Date dateToConvert) {
return new java.sql.Date(dateToConvert.getTime()).toLocalDate();
}
public static LocalDate convertToLocalDateViaMilisecond(Date dateToConvert) {
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDate();
}
public static LocalDate convertToLocalDate(Date dateToConvert) {
return LocalDate.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

39
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverter.java Normal file
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@ -0,0 +1,39 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDateTime.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverter {
public static LocalDateTime convertToLocalDateTimeViaInstant(Date dateToConvert) {
return dateToConvert.toInstant()
.atZone(ZoneId.systemDefault())
.toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTimeViaSqlTimestamp(Date dateToConvert) {
return new java.sql.Timestamp(dateToConvert.getTime()).toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTimeViaMilisecond(Date dateToConvert) {
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTime(Date dateToConvert) {
return LocalDateTime.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

27
core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateTimeToDateConverter.java Normal file
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@ -0,0 +1,27 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows different ways of converting java.time.LocalDateTime into java.util.Date.
*
* @author abialas
*
*/
public class LocalDateTimeToDateConverter {
public static Date convertToDateViaSqlTimestamp(LocalDateTime dateToConvert) {
return java.sql.Timestamp.valueOf(dateToConvert);
}
public static Date convertToDateViaInstant(LocalDateTime dateToConvert) {
return java.util.Date.from(dateToConvert.atZone(ZoneId.systemDefault())
.toInstant());
}
}

28
core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateToDateConverter.java Normal file
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@ -0,0 +1,28 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows different ways of converting java.time.LocalDate into java.util.Date.
*
* @author abialas
*
*/
public class LocalDateToDateConverter {
public static Date convertToDateViaSqlDate(LocalDate dateToConvert) {
return java.sql.Date.valueOf(dateToConvert);
}
public static Date convertToDateViaInstant(LocalDate dateToConvert) {
return java.util.Date.from(dateToConvert.atStartOfDay()
.atZone(ZoneId.systemDefault())
.toInstant());
}
}

89
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateConverterTest.java Normal file
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/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDate;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateConverter;
/**
* JUnits for {@link DateToLocalDateConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateConverterTest {
@Test
public void shouldReturn10thNovember2010WhenConvertViaInstant() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaInstant(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaMiliseconds() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaMilisecond(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlDate() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaSqlDate(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertToLocalDate() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDateTime = DateToLocalDateConverter.convertToLocalDate(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
}
}

97
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverterTest.java Normal file
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/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateTimeConverter;
/**
* JUnits for {@link DateToLocalDateTimeConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverterTest {
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaInstant() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaInstant(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaMiliseconds() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaMilisecond(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaSqlTimestamp() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaSqlTimestamp(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertToLocalDateTime() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTime(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
}

61
core-java-9/src/test/java/com/baeldung/java9/datetime/LocalDateTimeToDateConverterTest.java Normal file
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/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDateTime;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
/**
*
* JUnits for {@link LocalDateTimeToDateConverter} class.
*
* @author abialas
*
*/
public class LocalDateTimeToDateConverterTest {
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaInstant() {
// given
LocalDateTime dateToConvert = LocalDateTime.of(2010, 11, 10, 8, 20);
// when
Date date = LocalDateTimeToDateConverter.convertToDateViaInstant(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
assertEquals(8, calendar.get(Calendar.HOUR));
assertEquals(20, calendar.get(Calendar.MINUTE));
assertEquals(0, calendar.get(Calendar.SECOND));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlTimestamp() {
// given
LocalDateTime dateToConvert = LocalDateTime.of(2010, 11, 10, 8, 20);
// when
Date date = LocalDateTimeToDateConverter.convertToDateViaSqlTimestamp(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
assertEquals(8, calendar.get(Calendar.HOUR));
assertEquals(20, calendar.get(Calendar.MINUTE));
assertEquals(0, calendar.get(Calendar.SECOND));
}
}

55
core-java-9/src/test/java/com/baeldung/java9/datetime/LocalDateToDateConverterTest.java Normal file
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/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDate;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
/**
*
* JUnits for {@link LocalDateToDateConverter} class.
*
* @author abialas
*
*/
public class LocalDateToDateConverterTest {
@Test
public void shouldReturn10thNovember2010WhenConvertViaInstant() {
// given
LocalDate dateToConvert = LocalDate.of(2010, 11, 10);
// when
Date date = LocalDateToDateConverter.convertToDateViaInstant(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlDate() {
// given
LocalDate dateToConvert = LocalDate.of(2010, 11, 10);
// when
Date date = LocalDateToDateConverter.convertToDateViaSqlDate(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
}
}

1
core-java-concurrency/README.md
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@ -30,3 +30,4 @@
- [Guide to Volatile Keyword in Java](http://www.baeldung.com/java-volatile)
- [Overview of the java.util.concurrent](http://www.baeldung.com/java-util-concurrent)
- [Semaphores in Java](http://www.baeldung.com/java-semaphore)
- [Daemon Threads in Java](http://www.baeldung.com/java-daemon-thread)

19
core-java-concurrency/src/main/java/com/baeldung/concurrent/daemon/NewThread.java Normal file
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@ -0,0 +1,19 @@
package com.baeldung.concurrent.daemon;
public class NewThread extends Thread {
public void run() {
long startTime = System.currentTimeMillis();
while (true) {
for (int i = 0; i < 10; i++) {
System.out.println("New Thread is running..." + i);
}
// prevent the Thread to run forever. It will finish it's execution after 2 seconds
if (System.currentTimeMillis() - startTime > 2000) {
Thread.currentThread().interrupt();
break;
}
}
}
}

39
core-java-concurrency/src/main/java/com/baeldung/concurrent/executorservice/DelayedCallable.java Normal file
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@ -0,0 +1,39 @@
package com.baeldung.concurrent.executorservice;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
public class DelayedCallable implements Callable<String> {
private String name;
private long period;
private CountDownLatch latch;
public DelayedCallable(String name, long period, CountDownLatch latch) {
this(name, period);
this.latch = latch;
}
public DelayedCallable(String name, long period) {
this.name = name;
this.period = period;
}
public String call() {
try {
Thread.sleep(period);
if (latch != null) {
latch.countDown();
}
} catch (InterruptedException ex) {
// handle exception
ex.printStackTrace();
Thread.currentThread().interrupt();
}
return name;
}
}

52
core-java-concurrency/src/main/java/com/baeldung/concurrent/stopping/ControlSubThread.java Normal file
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package com.baeldung.concurrent.stopping;
import java.util.concurrent.atomic.AtomicBoolean;
public class ControlSubThread implements Runnable {
private Thread worker;
private int interval = 100;
private AtomicBoolean running = new AtomicBoolean(false);
private AtomicBoolean stopped = new AtomicBoolean(true);
public ControlSubThread(int sleepInterval) {
interval = sleepInterval;
}
public void start() {
worker = new Thread(this);
worker.start();
}
public void stop() {
running.set(false);
}
public void interrupt() {
running.set(false);
worker.interrupt();
}
boolean isRunning() {
return running.get();
}
boolean isStopped() {
return stopped.get();
}
public void run() {
running.set(true);
stopped.set(false);
while (running.get()) {
try {
Thread.sleep(interval);
} catch (InterruptedException e) {
// no-op, just loop again
}
// do something
}
stopped.set(true);
}
}

33
core-java-concurrency/src/main/java/com/baeldung/concurrent/waitandnotify/Data.java Normal file
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package com.baeldung.concurrent.waitandnotify;
public class Data {
private String packet;
// True if receiver should wait
// False if sender should wait
private boolean transfer = true;
public synchronized String receive() {
while (transfer) {
try {
wait();
} catch (InterruptedException e) {}
}
transfer = true;
notifyAll();
return packet;
}
public synchronized void send(String packet) {
while (!transfer) {
try {
wait();
} catch (InterruptedException e) {}
}
transfer = false;
this.packet = packet;
notifyAll();
}
}

12
core-java-concurrency/src/main/java/com/baeldung/concurrent/waitandnotify/NetworkDriver.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.concurrent.waitandnotify;
public class NetworkDriver {
public static void main(String[] args) {
Data data = new Data();
Thread sender = new Thread(new Sender(data));
Thread receiver = new Thread(new Receiver(data));
sender.start();
receiver.start();
}
}

25
core-java-concurrency/src/main/java/com/baeldung/concurrent/waitandnotify/Receiver.java Normal file
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@ -0,0 +1,25 @@
package com.baeldung.concurrent.waitandnotify;
import java.util.concurrent.ThreadLocalRandom;
public class Receiver implements Runnable {
private Data load;
public Receiver(Data load) {
this.load = load;
}
public void run() {
for(String receivedMessage = load.receive();
!"End".equals(receivedMessage) ;
receivedMessage = load.receive()) {
System.out.println(receivedMessage);
//Thread.sleep() to mimic heavy server-side processing
try {
Thread.sleep(ThreadLocalRandom.current().nextInt(1000, 5000));
} catch (InterruptedException e) {}
}
}
}

30
core-java-concurrency/src/main/java/com/baeldung/concurrent/waitandnotify/Sender.java Normal file
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@ -0,0 +1,30 @@
package com.baeldung.concurrent.waitandnotify;
import java.util.concurrent.ThreadLocalRandom;
public class Sender implements Runnable {
private Data data;
public Sender(Data data) {
this.data = data;
}
public void run() {
String packets[] = {
"First packet",
"Second packet",
"Third packet",
"Fourth packet",
"End"
};
for (String packet : packets) {
data.send(packet);
//Thread.sleep() to mimic heavy server-side processing
try {
Thread.sleep(ThreadLocalRandom.current().nextInt(1000, 5000));
} catch (InterruptedException e) {}
}
}
}

31
core-java-concurrency/src/test/java/com/baeldung/concurrent/daemon/DaemonThreadTest.java Normal file
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@ -0,0 +1,31 @@
package com.baeldung.concurrent.daemon;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Ignore;
import org.junit.Test;
public class DaemonThreadTest {
@Test
@Ignore
public void whenCallIsDaemon_thenCorrect() {
NewThread daemonThread = new NewThread();
NewThread userThread = new NewThread();
daemonThread.setDaemon(true);
daemonThread.start();
userThread.start();
assertTrue(daemonThread.isDaemon());
assertFalse(userThread.isDaemon());
}
@Test(expected = IllegalThreadStateException.class)
@Ignore
public void givenUserThread_whenSetDaemonWhileRunning_thenIllegalThreadStateException() {
NewThread daemonThread = new NewThread();
daemonThread.start();
daemonThread.setDaemon(true);
}
}

215
core-java-concurrency/src/test/java/com/baeldung/concurrent/executorservice/WaitingForThreadsToFinishTest.java Normal file
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@ -0,0 +1,215 @@
package com.baeldung.concurrent.executorservice;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.*;
import static junit.framework.TestCase.assertTrue;
import static org.junit.Assert.fail;
public class WaitingForThreadsToFinishTest {
private static final Logger LOG = LoggerFactory.getLogger(WaitingForThreadsToFinishTest.class);
private final static ExecutorService WORKER_THREAD_POOL = Executors.newFixedThreadPool(10);
public void awaitTerminationAfterShutdown(ExecutorService threadPool) {
threadPool.shutdown();
try {
if (!threadPool.awaitTermination(60, TimeUnit.SECONDS)) {
threadPool.shutdownNow();
}
} catch (InterruptedException ex) {
threadPool.shutdownNow();
Thread.currentThread().interrupt();
}
}
@Test
public void givenMultipleThreads_whenUsingCountDownLatch_thenMainShoudWaitForAllToFinish() {
ExecutorService WORKER_THREAD_POOL = Executors.newFixedThreadPool(10);
try {
long startTime = System.currentTimeMillis();
// create a CountDownLatch that waits for the 2 threads to finish
CountDownLatch latch = new CountDownLatch(2);
for (int i = 0; i < 2; i++) {
WORKER_THREAD_POOL.submit(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(1000);
latch.countDown();
} catch (InterruptedException e) {
e.printStackTrace();
Thread.currentThread().interrupt();
}
}
});
}
// wait for the latch to be decremented by the two threads
latch.await();
long processingTime = System.currentTimeMillis() - startTime;
assertTrue(processingTime >= 1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
awaitTerminationAfterShutdown(WORKER_THREAD_POOL);
}
@Test
public void givenMultipleThreads_whenInvokeAll_thenMainThreadShouldWaitForAllToFinish() {
ExecutorService WORKER_THREAD_POOL = Executors.newFixedThreadPool(10);
List<Callable<String>> callables = Arrays.asList(
new DelayedCallable("fast thread", 100),
new DelayedCallable("slow thread", 3000));
try {
long startProcessingTime = System.currentTimeMillis();
List<Future<String>> futures = WORKER_THREAD_POOL.invokeAll(callables);
awaitTerminationAfterShutdown(WORKER_THREAD_POOL);
try {
WORKER_THREAD_POOL.submit(new Callable<String>() {
@Override
public String call() throws Exception {
fail("This thread should have been rejected !");
Thread.sleep(1000000);
return null;
}
});
} catch (RejectedExecutionException ex) {
//
}
long totalProcessingTime = System.currentTimeMillis() - startProcessingTime;
assertTrue(totalProcessingTime >= 3000);
String firstThreadResponse = futures.get(0)
.get();
assertTrue("First response should be from the fast thread", "fast thread".equals(firstThreadResponse));
String secondThreadResponse = futures.get(1)
.get();
assertTrue("Last response should be from the slow thread", "slow thread".equals(secondThreadResponse));
} catch (ExecutionException | InterruptedException ex) {
ex.printStackTrace();
}
}
@Test
public void givenMultipleThreads_whenUsingCompletionService_thenMainThreadShouldWaitForAllToFinish() {
CompletionService<String> service = new ExecutorCompletionService<>(WORKER_THREAD_POOL);
List<Callable<String>> callables = Arrays.asList(
new DelayedCallable("fast thread", 100),
new DelayedCallable("slow thread", 3000));
for (Callable<String> callable : callables) {
service.submit(callable);
}
try {
long startProcessingTime = System.currentTimeMillis();
Future<String> future = service.take();
String firstThreadResponse = future.get();
long totalProcessingTime = System.currentTimeMillis() - startProcessingTime;
assertTrue("First response should be from the fast thread", "fast thread".equals(firstThreadResponse));
assertTrue(totalProcessingTime >= 100 && totalProcessingTime < 1000);
LOG.debug("Thread finished after: " + totalProcessingTime + " milliseconds");
future = service.take();
String secondThreadResponse = future.get();
totalProcessingTime = System.currentTimeMillis() - startProcessingTime;
assertTrue("Last response should be from the slow thread", "slow thread".equals(secondThreadResponse));
assertTrue(totalProcessingTime >= 3000 && totalProcessingTime < 4000);
LOG.debug("Thread finished after: " + totalProcessingTime + " milliseconds");
} catch (ExecutionException | InterruptedException ex) {
ex.printStackTrace();
} finally {
awaitTerminationAfterShutdown(WORKER_THREAD_POOL);
}
}
@Test
public void givenMultipleThreads_whenUsingCompletableFutures_thenMainThreadShouldWaitForAllToFinish() {
CompletableFuture<String> future1 = CompletableFuture.supplyAsync(() -> {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "Hello";
});
CompletableFuture<String> future2 = CompletableFuture.supplyAsync(() -> {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "Beautiful";
});
CompletableFuture<String> future3 = CompletableFuture.supplyAsync(() -> {
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "World";
});
long startProcessingTime = System.currentTimeMillis();
CompletableFuture<Void> combinedFuture = CompletableFuture.allOf(future1, future2, future3);
combinedFuture.join();
long totalProcessingTime = System.currentTimeMillis() - startProcessingTime;
assertTrue(totalProcessingTime >= 5000 && totalProcessingTime < 6000);
LOG.debug("Responses from all threads are available after " + totalProcessingTime + " milliseconds");
try {
String thread1Response = future1.get();
assertTrue(thread1Response.equals("Hello"));
String thread2Response = future2.get();
assertTrue(thread2Response.equals("Beautiful"));
String thread3Response = future3.get();
assertTrue(thread3Response.equals("World"));
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
awaitTerminationAfterShutdown(WORKER_THREAD_POOL);
}
}

133
core-java-concurrency/src/test/java/com/baeldung/concurrent/runnable/RunnableVsThreadLiveTest.java Normal file
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package com.baeldung.concurrent.runnable;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.apache.commons.lang3.RandomUtils;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class RunnableVsThreadLiveTest {
private static Logger log =
LoggerFactory.getLogger(RunnableVsThreadLiveTest.class);
private static ExecutorService executorService;
@BeforeClass
public static void setup() {
executorService = Executors.newCachedThreadPool();
}
@Test
public void givenARunnable_whenRunIt_thenResult() throws Exception{
Thread thread = new Thread(new SimpleRunnable(
"SimpleRunnable executed using Thread"));
thread.start();
thread.join();
}
@Test
public void givenARunnable_whenSubmitToES_thenResult() throws Exception{
executorService.submit(new SimpleRunnable(
"SimpleRunnable executed using ExecutorService")).get();
}
@Test
public void givenARunnableLambda_whenSubmitToES_thenResult()
throws Exception{
executorService.submit(()->
log.info("Lambda runnable executed!!!")).get();
}
@Test
public void givenAThread_whenRunIt_thenResult() throws Exception{
Thread thread = new SimpleThread(
"SimpleThread executed using Thread");
thread.start();
thread.join();
}
@Test
public void givenAThread_whenSubmitToES_thenResult() throws Exception{
executorService.submit(new SimpleThread(
"SimpleThread executed using ExecutorService")).get();
}
@Test
public void givenACallable_whenSubmitToES_thenResult() throws Exception {
Future<Integer> future = executorService.submit(
new SimpleCallable());
log.info("Result from callable: {}", future.get());
}
@Test
public void givenACallableAsLambda_whenSubmitToES_thenResult()
throws Exception {
Future<Integer> future = executorService.submit(() -> RandomUtils.nextInt(0, 100));
log.info("Result from callable: {}", future.get());
}
@AfterClass
public static void tearDown() {
if ( executorService != null && !executorService.isShutdown()) {
executorService.shutdown();
}
}
}
class SimpleThread extends Thread{
private static final Logger log =
LoggerFactory.getLogger(SimpleThread.class);
private String message;
SimpleThread(String message) {
this.message = message;
}
@Override
public void run() {
log.info(message);
}
}
class SimpleRunnable implements Runnable {
private static final Logger log =
LoggerFactory.getLogger(SimpleRunnable.class);
private String message;
SimpleRunnable(String message) {
this.message = message;
}
@Override
public void run() {
log.info(message);
}
}
class SimpleCallable implements Callable<Integer> {
@Override
public Integer call() throws Exception {
return RandomUtils.nextInt(0, 100);
}
}

54
core-java-concurrency/src/test/java/com/baeldung/concurrent/stopping/StopThreadTest.java Normal file
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@ -0,0 +1,54 @@
package com.baeldung.concurrent.stopping;
import com.jayway.awaitility.Awaitility;
import org.junit.Test;
import java.util.concurrent.TimeUnit;
import static com.jayway.awaitility.Awaitility.await;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class StopThreadTest {
@Test
public void whenStoppedThreadIsStopped() throws InterruptedException {
int interval = 100;
ControlSubThread controlSubThread = new ControlSubThread(interval);
controlSubThread.start();
// Give things a chance to get set up
Thread.sleep(interval);
assertTrue(controlSubThread.isRunning());
assertFalse(controlSubThread.isStopped());
// Stop it and make sure the flags have been reversed
controlSubThread.stop();
await()
.until(() -> assertTrue(controlSubThread.isStopped()));
}
@Test
public void whenInterruptedThreadIsStopped() throws InterruptedException {
int interval = 5000;
ControlSubThread controlSubThread = new ControlSubThread(interval);
controlSubThread.start();
// Give things a chance to get set up
Thread.sleep(100);
assertTrue(controlSubThread.isRunning());
assertFalse(controlSubThread.isStopped());
// Stop it and make sure the flags have been reversed
controlSubThread.interrupt();
// Wait less than the time we would normally sleep, and make sure we exited.
Awaitility.await()
.atMost(interval/ 10, TimeUnit.MILLISECONDS)
.until(controlSubThread::isStopped);
}
}

65
core-java-concurrency/src/test/java/com/baeldung/concurrent/waitandnotify/NetworkIntegrationTest.java Normal file
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@ -0,0 +1,65 @@
package com.baeldung.concurrent.waitandnotify;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class NetworkIntegrationTest {
private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
private final ByteArrayOutputStream errContent = new ByteArrayOutputStream();
private String expected;
@Before
public void setUpStreams() {
System.setOut(new PrintStream(outContent));
System.setErr(new PrintStream(errContent));
}
@Before
public void setUpExpectedOutput() {
StringWriter expectedStringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(expectedStringWriter);
printWriter.println("First packet");
printWriter.println("Second packet");
printWriter.println("Third packet");
printWriter.println("Fourth packet");
printWriter.close();
expected = expectedStringWriter.toString();
}
@After
public void cleanUpStreams() {
System.setOut(null);
System.setErr(null);
}
@Test
public void givenSenderAndReceiver_whenSendingPackets_thenNetworkSynchronized() {
Data data = new Data();
Thread sender = new Thread(new Sender(data));
Thread receiver = new Thread(new Receiver(data));
sender.start();
receiver.start();
//wait for sender and receiver to finish before we test against expected
try {
sender.join();
receiver.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
assertEquals(expected, outContent.toString());
}
}

26
core-java-sun/.gitignore vendored Normal file
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@ -0,0 +1,26 @@
*.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/
/temp
#IntelliJ specific
.idea/
*.iml

6
core-java-sun/README.md Normal file
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@ -0,0 +1,6 @@
=========
## Core Java Cookbooks and Examples
### Relevant Articles:
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)

489
core-java-sun/pom.xml Normal file
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@ -0,0 +1,489 @@
<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-sun</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core-java-sun</name>
<dependencies>
<!-- utils -->
<dependency>
<groupId>net.sourceforge.collections</groupId>
<artifactId>collections-generic</artifactId>
<version>${collections-generic.version}</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>${bouncycastle.version}</version>
</dependency>
<dependency>
<groupId>org.unix4j</groupId>
<artifactId>unix4j-command</artifactId>
<version>${unix4j.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
<!-- web -->
<!-- marshalling -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<!-- <scope>runtime</scope> -->
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
<!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${commons-codec.version}</version>
</dependency>
<dependency>
<groupId>org.javamoney</groupId>
<artifactId>moneta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.owasp.esapi</groupId>
<artifactId>esapi</artifactId>
<version>2.1.0.1</version>
</dependency>
<dependency>
<groupId>com.sun.messaging.mq</groupId>
<artifactId>fscontext</artifactId>
<version>${fscontext.version}</version>
</dependency>
<dependency>
<groupId>com.codepoetics</groupId>
<artifactId>protonpack</artifactId>
<version>${protonpack.version}</version>
</dependency>
<dependency>
<groupId>one.util</groupId>
<artifactId>streamex</artifactId>
<version>${streamex.version}</version>
</dependency>
<dependency>
<groupId>io.vavr</groupId>
<artifactId>vavr</artifactId>
<version>${vavr.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.8.0</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>
</dependencies>
<build>
<finalName>core-java</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*LiveTest.java</exclude>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
</excludes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${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>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>spring-boot</classifier>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<executions>
<execution>
<phase>integration-test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<excludes>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<includes>
<include>**/*IntegrationTest.java</include>
</includes>
</configuration>
</execution>
</executions>
<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<!-- marshalling -->
<jackson.version>2.8.5</jackson.version>
<!-- logging -->
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<!-- util -->
<guava.version>23.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<commons-io.version>2.5</commons-io.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<unix4j.version>0.4</unix4j.version>
<grep4j.version>1.8.7</grep4j.version>
<lombok.version>1.16.12</lombok.version>
<fscontext.version>4.6-b01</fscontext.version>
<protonpack.version>1.13</protonpack.version>
<streamex.version>0.6.5</streamex.version>
<vavr.version>0.9.0</vavr.version>
<!-- testing -->
<org.hamcrest.version>1.3</org.hamcrest.version>
<junit.version>4.12</junit.version>
<mockito.version>2.8.9</mockito.version>
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
<!-- maven plugins -->
<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
</properties>
</project>

0
mockito/.gitignore → core-java-sun/src/main/java/com/baeldung/.gitignore vendored
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2
core-java-sun/src/main/java/com/baeldung/README.md Normal file
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@ -0,0 +1,2 @@
### Relevant Articles:
- [SHA-256 Hashing in Java](http://www.baeldung.com/sha-256-hashing-java)

9
core-java-sun/src/main/java/com/baeldung/javac/Positive.java Normal file
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package com.baeldung.javac;
import java.lang.annotation.*;
@Documented
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.PARAMETER})
public @interface Positive {
}

123
core-java-sun/src/main/java/com/baeldung/javac/SampleJavacPlugin.java Normal file
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@ -0,0 +1,123 @@
package com.baeldung.javac;
import com.sun.source.tree.MethodTree;
import com.sun.source.tree.VariableTree;
import com.sun.source.util.*;
import com.sun.tools.javac.api.BasicJavacTask;
import com.sun.tools.javac.code.TypeTag;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.Name;
import com.sun.tools.javac.util.Names;
import javax.tools.JavaCompiler;
import java.util.*;
import java.util.stream.Collectors;
import static com.sun.tools.javac.util.List.nil;
/**
* A {@link JavaCompiler javac} plugin which inserts {@code >= 0} checks into resulting {@code *.class} files
* for numeric method parameters marked by {@link Positive}
*/
public class SampleJavacPlugin implements Plugin {
public static final String NAME = "MyPlugin";
private static Set<String> TARGET_TYPES = new HashSet<>(Arrays.asList(
// Use only primitive types for simplicity
byte.class.getName(), short.class.getName(), char.class.getName(),
int.class.getName(), long.class.getName(), float.class.getName(), double.class.getName()));
@Override
public String getName() {
return NAME;
}
@Override
public void init(JavacTask task, String... args) {
Context context = ((BasicJavacTask) task).getContext();
task.addTaskListener(new TaskListener() {
@Override
public void started(TaskEvent e) {
}
@Override
public void finished(TaskEvent e) {
if (e.getKind() != TaskEvent.Kind.PARSE) {
return;
}
e.getCompilationUnit()
.accept(new TreeScanner<Void, Void>() {
@Override
public Void visitMethod(MethodTree method, Void v) {
List<VariableTree> parametersToInstrument = method.getParameters()
.stream()
.filter(SampleJavacPlugin.this::shouldInstrument)
.collect(Collectors.toList());
if (!parametersToInstrument.isEmpty()) {
// There is a possible case that more than one argument is marked by @Positive,
// as the checks are added to the method's body beginning, we process parameters RTL
// to ensure correct order.
Collections.reverse(parametersToInstrument);
parametersToInstrument.forEach(p -> addCheck(method, p, context));
}
// There is a possible case that there is a nested class declared in a method's body,
// hence, we want to proceed with method body AST as well.
return super.visitMethod(method, v);
}
}, null);
}
});
}
private boolean shouldInstrument(VariableTree parameter) {
return TARGET_TYPES.contains(parameter.getType().toString())
&& parameter.getModifiers().getAnnotations()
.stream()
.anyMatch(a -> Positive.class.getSimpleName().equals(a.getAnnotationType().toString()));
}
private void addCheck(MethodTree method, VariableTree parameter, Context context) {
JCTree.JCIf check = createCheck(parameter, context);
JCTree.JCBlock body = (JCTree.JCBlock) method.getBody();
body.stats = body.stats.prepend(check);
}
private static JCTree.JCIf createCheck(VariableTree parameter, Context context) {
TreeMaker factory = TreeMaker.instance(context);
Names symbolsTable = Names.instance(context);
return factory.at(((JCTree) parameter).pos)
.If(factory.Parens(createIfCondition(factory, symbolsTable, parameter)),
createIfBlock(factory, symbolsTable, parameter),
null);
}
private static JCTree.JCBinary createIfCondition(TreeMaker factory, Names symbolsTable, VariableTree parameter) {
Name parameterId = symbolsTable.fromString(parameter.getName().toString());
return factory.Binary(JCTree.Tag.LE,
factory.Ident(parameterId),
factory.Literal(TypeTag.INT, 0));
}
private static JCTree.JCBlock createIfBlock(TreeMaker factory, Names symbolsTable, VariableTree parameter) {
String parameterName = parameter.getName().toString();
Name parameterId = symbolsTable.fromString(parameterName);
String errorMessagePrefix = String.format("Argument '%s' of type %s is marked by @%s but got '",
parameterName, parameter.getType(), Positive.class.getSimpleName());
String errorMessageSuffix = "' for it";
return factory.Block(0, com.sun.tools.javac.util.List.of(
factory.Throw(
factory.NewClass(null, nil(),
factory.Ident(symbolsTable.fromString(IllegalArgumentException.class.getSimpleName())),
com.sun.tools.javac.util.List.of(factory.Binary(JCTree.Tag.PLUS,
factory.Binary(JCTree.Tag.PLUS, factory.Literal(TypeTag.CLASS, errorMessagePrefix),
factory.Ident(parameterId)),
factory.Literal(TypeTag.CLASS, errorMessageSuffix))), null))));
}
}

6
core-java-sun/src/main/resources/log4j.properties Normal file
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@ -0,0 +1,6 @@
log4j.rootLogger=DEBUG, A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

0
mockito/src/main/resources/logback.xml → core-java-sun/src/main/resources/logback.xml
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42
core-java-sun/src/test/java/com/baeldung/javac/SampleJavacPluginIntegrationTest.java Normal file
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@ -0,0 +1,42 @@
package com.baeldung.javac;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class SampleJavacPluginIntegrationTest {
private static final String CLASS_TEMPLATE =
"package com.baeldung.javac;\n" +
"\n" +
"public class Test {\n" +
" public static %1$s service(@Positive %1$s i) {\n" +
" return i;\n" +
" }\n" +
"}\n" +
"";
private TestCompiler compiler = new TestCompiler();
private TestRunner runner = new TestRunner();
@Test(expected = IllegalArgumentException.class)
public void givenInt_whenNegative_thenThrowsException() throws Throwable {
compileAndRun(double.class,-1);
}
@Test(expected = IllegalArgumentException.class)
public void givenInt_whenZero_thenThrowsException() throws Throwable {
compileAndRun(int.class,0);
}
@Test
public void givenInt_whenPositive_thenSuccess() throws Throwable {
assertEquals(1, compileAndRun(int.class, 1));
}
private Object compileAndRun(Class<?> argumentType, Object argument) throws Throwable {
String qualifiedClassName = "com.baeldung.javac.Test";
byte[] byteCode = compiler.compile(qualifiedClassName, String.format(CLASS_TEMPLATE, argumentType.getName()));
return runner.run(byteCode, qualifiedClassName, "service", new Class[] {argumentType}, argument);
}
}

26
core-java-sun/src/test/java/com/baeldung/javac/SimpleClassFile.java Normal file
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@ -0,0 +1,26 @@
package com.baeldung.javac;
import javax.tools.SimpleJavaFileObject;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
/** Holds compiled byte code in a byte array */
public class SimpleClassFile extends SimpleJavaFileObject {
private ByteArrayOutputStream out;
public SimpleClassFile(URI uri) {
super(uri, Kind.CLASS);
}
@Override
public OutputStream openOutputStream() throws IOException {
return out = new ByteArrayOutputStream();
}
public byte[] getCompiledBinaries() {
return out.toByteArray();
}
}

34
core-java-sun/src/test/java/com/baeldung/javac/SimpleFileManager.java Normal file
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@ -0,0 +1,34 @@
package com.baeldung.javac;
import javax.tools.*;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
/** Adapts {@link SimpleClassFile} to the {@link JavaCompiler} */
public class SimpleFileManager extends ForwardingJavaFileManager<StandardJavaFileManager> {
private final List<SimpleClassFile> compiled = new ArrayList<>();
public SimpleFileManager(StandardJavaFileManager delegate) {
super(delegate);
}
@Override
public JavaFileObject getJavaFileForOutput(Location location,
String className,
JavaFileObject.Kind kind,
FileObject sibling)
{
SimpleClassFile result = new SimpleClassFile(URI.create("string://" + className));
compiled.add(result);
return result;
}
/**
* @return compiled binaries processed by the current class
*/
public List<SimpleClassFile> getCompiled() {
return compiled;
}
}

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