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Merge branch 'master' of https://github.com/eugenp/tutorials into story/BAEL-7636

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This commit is contained in:
Dhawal Kapil 2018-08-14 21:19:09 +05:30
commit 5a9297aa0d
12 changed files with 332 additions and 159 deletions
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18
core-java/src/main/java/com/baeldung/keywords/finalize/FinalizeObject.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.keywords.finalize;
public class FinalizeObject {
@Override
protected void finalize() throws Throwable {
System.out.println("Execute finalize method");
super.finalize();
}
public static void main(String[] args) throws Exception {
FinalizeObject object = new FinalizeObject();
object = null;
System.gc();
Thread.sleep(1000);
}
}

15
core-java/src/main/java/com/baeldung/keywords/finalkeyword/Child.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.keywords.finalkeyword;
public final class Child extends Parent {
@Override
void method1(int arg1, final int arg2) {
// OK
}
/* @Override
void method2() {
// Compilation error
}*/
}

5
core-java/src/main/java/com/baeldung/keywords/finalkeyword/GrandChild.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.keywords.finalkeyword;
/*public class GrandChild extends Child {
// Compilation error
}*/

23
core-java/src/main/java/com/baeldung/keywords/finalkeyword/Parent.java Normal file
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@ -0,0 +1,23 @@
package com.baeldung.keywords.finalkeyword;
public class Parent {
int field1 = 1;
final int field2 = 2;
Parent() {
field1 = 2; // OK
// field2 = 3; // Compilation error
}
void method1(int arg1, final int arg2) {
arg1 = 2; // OK
// arg2 = 3; // Compilation error
}
final void method2() {
final int localVar = 2; // OK
// localVar = 3; // Compilation error
}
}

29
core-java/src/main/java/com/baeldung/keywords/finallykeyword/FinallyExample.java Normal file
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@ -0,0 +1,29 @@
package com.baeldung.keywords.finallykeyword;
public class FinallyExample {
public static void main(String args[]) throws Exception {
try {
System.out.println("Execute try block");
throw new Exception();
} catch (Exception e) {
System.out.println("Execute catch block");
} finally {
System.out.println("Execute finally block");
}
try {
System.out.println("Execute try block");
} finally {
System.out.println("Execute finally block");
}
try {
System.out.println("Execute try block");
throw new Exception();
} finally {
System.out.println("Execute finally block");
}
}
}

6
core-java/src/main/java/com/baeldung/regexp/datepattern/optmization/OptimizedMatcher.java Normal file
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@ -0,0 +1,6 @@
package com.baeldung.regexp.datepattern.optmization;
public class OptimizedMatcher {
}

16
core-java/src/test/java/com/baeldung/java/listInitialization/ListInitializationUnitTest.java
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@ -9,28 +9,15 @@ import java.util.stream.Stream;
import lombok.extern.java.Log;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
@Log
public class ListInitializationUnitTest {
@Rule
public ExpectedException exception = ExpectedException.none();
@Test
public void givenAnonymousInnerClass_thenInitialiseList() {
List<String> cities = new ArrayList() {
// Inside declaration of the subclass
// You can have multiple initializer block
{
log.info("Inside the first initializer block.");
}
{
log.info("Inside the second initializer block.");
add("New York");
add("Rio");
add("Tokyo");
@ -47,11 +34,10 @@ public class ListInitializationUnitTest {
Assert.assertTrue(list.contains("foo"));
}
@Test
@Test(expected = UnsupportedOperationException.class)
public void givenArraysAsList_whenAdd_thenUnsupportedException() {
List<String> list = Arrays.asList("foo", "bar");
exception.expect(UnsupportedOperationException.class);
list.add("baz");
}

109
core-java/src/test/java/com/baeldung/regexp/optmization/OptimizedMatcherUnitTest.java Normal file
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@ -0,0 +1,109 @@
package com.baeldung.regexp.optmization;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static org.junit.Assert.assertTrue;
public class OptimizedMatcherUnitTest {
private long time;
private long mstimePreCompiled;
private long mstimeNotPreCompiled;
private String action;
private List<String> items;
@Before
public void setup() {
Random random = new Random();
items = new ArrayList<String>();
long average = 0;
for (int i = 0; i < 100000; ++i) {
StringBuilder s = new StringBuilder();
int characters = random.nextInt(7) + 1;
for (int k = 0; k < characters; ++ k) {
char c = (char)(random.nextInt('Z' - 'A') + 'A');
int rep = random.nextInt(95) + 5;
for (int j = 0; j < rep; ++ j)
s.append(c);
average += rep;
}
items.add(s.toString());
}
average /= 100000;
System.out.println("generated data, average length: " + average);
}
@Test
public void givenANotPreCompiledAndAPreCompiledPatternA_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
testPatterns("A*");
assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
}
@Test
public void givenANotPreCompiledAndAPreCompiledPatternABC_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
testPatterns("A*B*C*");
assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
}
@Test
public void givenANotPreCompiledAndAPreCompiledPatternECWF_whenMatcheItems_thenPreCompiledFasterThanNotPreCompiled() {
testPatterns("E*C*W*F*");
assertTrue(mstimePreCompiled < mstimeNotPreCompiled);
}
private void testPatterns(String regex) {
time = System.nanoTime();
int matched = 0;
int unmatched = 0;
for (String item : this.items) {
if (item.matches(regex)) {
++matched;
}
else {
++unmatched;
}
}
this.action = "uncompiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
this.mstimeNotPreCompiled = (System.nanoTime() - time) / 1000000;
System.out.println(this.action + ": " + mstimeNotPreCompiled + "ms");
time = System.nanoTime();
Matcher matcher = Pattern.compile(regex).matcher("");
matched = 0;
unmatched = 0;
for (String item : this.items) {
if (matcher.reset(item).matches()) {
++matched;
}
else {
++unmatched;
}
}
this.action = "compiled: regex=" + regex + " matched=" + matched + " unmatched=" + unmatched;
this.mstimePreCompiled = (System.nanoTime() - time) / 1000000;
System.out.println(this.action + ": " + mstimePreCompiled + "ms");
}
}

29
testing-modules/java-faker/pom.xml
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@ -1,29 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>java-faker</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.github.javafaker</groupId>
<artifactId>javafaker</artifactId>
<version>0.15</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

115
testing-modules/java-faker/src/test/java/com/baeldung/JavaFakerTest.java
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@ -1,115 +0,0 @@
package com.baeldung;
import com.github.javafaker.Faker;
import com.github.javafaker.service.FakeValuesService;
import com.github.javafaker.service.FakerIDN;
import com.github.javafaker.service.LocaleDoesNotExistException;
import com.github.javafaker.service.RandomService;
import javafx.scene.Parent;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.util.Locale;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
public class JavaFakerTest {
private Faker faker;
@Before
public void setUp() throws Exception {
faker = new Faker();
}
@Test
public void givenJavaFaker_whenAddressObjectCalled_checkValidAddressInfoGiven() throws Exception {
Faker faker = new Faker();
String streetName = faker.address().streetName();
String number = faker.address().buildingNumber();
String city = faker.address().city();
String country = faker.address().country();
System.out.println(String.format("%s\n%s\n%s\n%s",
number,
streetName,
city,
country));
}
@Test
public void givenJavaFakersWithSameSeed_whenNameCalled_CheckSameName() throws Exception {
Faker faker1 = new Faker(new Random(24));
Faker faker2 = new Faker(new Random(24));
assertEquals(faker1.name().firstName(), faker2.name().firstName());
}
@Test
public void givenJavaFakersWithDifferentLocals_checkZipCodesMatchRegex() throws Exception {
Faker ukFaker = new Faker(new Locale("en-GB"));
Faker usFaker = new Faker(new Locale("en-US"));
System.out.println(String.format("American zipcode: %s", usFaker.address().zipCode()));
System.out.println(String.format("British postcode: %s", ukFaker.address().zipCode()));
Pattern ukPattern = Pattern.compile("([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z]))))\\s?[0-9][A-Za-z]{2})");
Matcher ukMatcher = ukPattern.matcher(ukFaker.address().zipCode());
assertTrue(ukMatcher.find());
Matcher usMatcher = Pattern.compile("^\\d{5}(?:[-\\s]\\d{4})?$").matcher(usFaker.address().zipCode());
assertTrue(usMatcher.find());
}
@Test
public void givenJavaFakerService_testFakersCreated() throws Exception {
RandomService randomService = new RandomService();
System.out.println(randomService.nextBoolean());
System.out.println(randomService.nextDouble());
Faker faker = new Faker(new Random(randomService.nextLong()));
System.out.println(faker.address().city());
}
@Test
public void testFakeValuesService() throws Exception {
FakeValuesService fakeValuesService = new FakeValuesService(new Locale("en-GB"), new RandomService());
String email = fakeValuesService.bothify("????##@gmail.com");
Matcher emailMatcher = Pattern.compile("\\w{4}\\d{2}@gmail.com").matcher(email);
assertTrue(emailMatcher.find());
String alphaNumericString = fakeValuesService.regexify("[a-z1-9]{10}");
Matcher alphaNumericMatcher = Pattern.compile("[a-z1-9]{10}").matcher(alphaNumericString);
assertTrue(alphaNumericMatcher.find());
}
@Test(expected = LocaleDoesNotExistException.class)
public void givenWrongLocale_whenFakerIsInitialised_testLocaleDoesNotExistExceptionIsThrown() throws Exception {
Faker wrongLocaleFaker = new Faker(new Locale("en-seaWorld"));
}
}

5
testing-modules/testing/pom.xml
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@ -88,6 +88,11 @@
<artifactId>javalite-common</artifactId>
<version>${javalite.version}</version>
</dependency>
<dependency>
<groupId>com.github.javafaker</groupId>
<artifactId>javafaker</artifactId>
<version>0.15</version>
</dependency>
</dependencies>
<build>

121
testing-modules/testing/src/test/java/com/baeldung/javafaker/JavaFakerUnitTest.java Normal file
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@ -0,0 +1,121 @@
package com.baeldung.javafaker;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.Locale;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.junit.Before;
import org.junit.Test;
import com.github.javafaker.Faker;
import com.github.javafaker.service.FakeValuesService;
import com.github.javafaker.service.LocaleDoesNotExistException;
import com.github.javafaker.service.RandomService;
public class JavaFakerUnitTest {
private Faker faker;
@Before
public void setUp() throws Exception {
faker = new Faker();
}
@Test
public void givenJavaFaker_whenAddressObjectCalled_checkValidAddressInfoGiven() throws Exception {
Faker faker = new Faker();
String streetName = faker.address()
.streetName();
String number = faker.address()
.buildingNumber();
String city = faker.address()
.city();
String country = faker.address()
.country();
System.out.println(String.format("%s\n%s\n%s\n%s", number, streetName, city, country));
}
@Test
public void givenJavaFakersWithSameSeed_whenNameCalled_CheckSameName() throws Exception {
Faker faker1 = new Faker(new Random(24));
Faker faker2 = new Faker(new Random(24));
assertEquals(faker1.name()
.firstName(),
faker2.name()
.firstName());
}
@Test
public void givenJavaFakersWithDifferentLocals_checkZipCodesMatchRegex() throws Exception {
Faker ukFaker = new Faker(new Locale("en-GB"));
Faker usFaker = new Faker(new Locale("en-US"));
System.out.println(String.format("American zipcode: %s", usFaker.address()
.zipCode()));
System.out.println(String.format("British postcode: %s", ukFaker.address()
.zipCode()));
Pattern ukPattern = Pattern.compile("([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z]))))\\s?[0-9][A-Za-z]{2})");
Matcher ukMatcher = ukPattern.matcher(ukFaker.address()
.zipCode());
assertTrue(ukMatcher.find());
Matcher usMatcher = Pattern.compile("^\\d{5}(?:[-\\s]\\d{4})?$")
.matcher(usFaker.address()
.zipCode());
assertTrue(usMatcher.find());
}
@Test
public void givenJavaFakerService_testFakersCreated() throws Exception {
RandomService randomService = new RandomService();
System.out.println(randomService.nextBoolean());
System.out.println(randomService.nextDouble());
Faker faker = new Faker(new Random(randomService.nextLong()));
System.out.println(faker.address()
.city());
}
@Test
public void testFakeValuesService() throws Exception {
FakeValuesService fakeValuesService = new FakeValuesService(new Locale("en-GB"), new RandomService());
String email = fakeValuesService.bothify("????##@gmail.com");
Matcher emailMatcher = Pattern.compile("\\w{4}\\d{2}@gmail.com")
.matcher(email);
assertTrue(emailMatcher.find());
String alphaNumericString = fakeValuesService.regexify("[a-z1-9]{10}");
Matcher alphaNumericMatcher = Pattern.compile("[a-z1-9]{10}")
.matcher(alphaNumericString);
assertTrue(alphaNumericMatcher.find());
}
@Test(expected = LocaleDoesNotExistException.class)
public void givenWrongLocale_whenFakerIsInitialised_testLocaleDoesNotExistExceptionIsThrown() throws Exception {
Faker wrongLocaleFaker = new Faker(new Locale("en-seaWorld"));
}
}