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Merge branch 'master' into BAEL-13601

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Loredana Crusoveanu
2019-04-28 00:42:22 +03:00
committed by GitHub
parent 705b310302 86ac6c697b
commit b3e541fb3b
140 changed files with 2689 additions and 185 deletions
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autovalue/src/main/java/com/baeldung/autofactory/provided/IntermediateAssembler.java
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package com.baeldung.autofactory.provided;
import com.baeldung.autofactory.model.Camera;
import com.google.auto.factory.AutoFactory;
import com.google.auto.factory.Provided;
import javafx.scene.Camera;
import javax.inject.Provider;
cloud-foundry-uaa/README.md
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### Revelant Articles
- [A Quick Guide To Using Cloud Foundry UAA](https://www.baeldung.com/cloud-foundry-uaa)
core-groovy-collections/README.md
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# Groovy
## Relevant articles:
- [Maps in Groovy](http://www.baeldung.com/)
core-groovy-collections/pom.xml
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<?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>
<artifactId>core-groovy-collections</artifactId>
<version>1.0-SNAPSHOT</version>
<name>core-groovy-collections</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy</artifactId>
<version>${groovy.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>${groovy-all.version}</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-dateutil</artifactId>
<version>${groovy.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-sql</artifactId>
<version>${groovy-sql.version}</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>${hsqldb.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.spockframework</groupId>
<artifactId>spock-core</artifactId>
<version>${spock-core.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.gmavenplus</groupId>
<artifactId>gmavenplus-plugin</artifactId>
<version>${gmavenplus-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>addSources</goal>
<goal>addTestSources</goal>
<goal>compile</goal>
<goal>compileTests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
<dependencies>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>junit5</id>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
<configuration>
<includes>
<include>**/*Test5.java</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
<configuration>
<useFile>false</useFile>
<includes>
<include>**/*Test.java</include>
<include>**/*Spec.java</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>central</id>
<url>http://jcenter.bintray.com</url>
</repository>
</repositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<groovy.version>2.5.6</groovy.version>
<groovy-all.version>2.5.6</groovy-all.version>
<groovy-sql.version>2.5.6</groovy-sql.version>
<hsqldb.version>2.4.0</hsqldb.version>
<spock-core.version>1.1-groovy-2.4</spock-core.version>
<gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
</properties>
</project>
core-groovy-collections/src/test/groovy/com/baeldung/map/MapTest.groovy
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package com.baeldung.map;
import static groovy.test.GroovyAssert.*
import org.junit.Test
class MapTest{
@Test
void createMap() {
def emptyMap = [:]
assertNotNull(emptyMap)
assertTrue(emptyMap instanceof java.util.LinkedHashMap)
def map = [name:"Jerry", age: 42, city: "New York"]
assertTrue(map.size() == 3)
}
@Test
void addItemsToMap() {
def map = [name:"Jerry"]
map["age"] = 42
map.city = "New York"
def hobbyLiteral = "hobby"
def hobbyMap = [(hobbyLiteral): "Singing"]
map.putAll(hobbyMap)
assertTrue(map == [name:"Jerry", age: 42, city: "New York", hobby:"Singing"])
assertTrue(hobbyMap.hobby == "Singing")
assertTrue(hobbyMap[hobbyLiteral] == "Singing")
map.plus([1:20]) // returns new map
map << [2:30]
}
@Test
void getItemsFromMap() {
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
assertTrue(map["name"] == "Jerry")
assertTrue(map.name == "Jerry")
def propertyAge = "age"
assertTrue(map[propertyAge] == 42)
}
@Test
void removeItemsFromMap() {
def map = [1:20, a:30, 2:42, 4:34, ba:67, 6:39, 7:49]
def minusMap = map.minus([2:42, 4:34]);
assertTrue(minusMap == [1:20, a:30, ba:67, 6:39, 7:49])
minusMap.removeAll{it -> it.key instanceof String}
assertTrue( minusMap == [ 1:20, 6:39, 7:49])
minusMap.retainAll{it -> it.value %2 == 0}
assertTrue( minusMap == [1:20])
}
@Test
void iteratingOnMaps(){
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
map.each{ entry -> println "$entry.key: $entry.value" }
map.eachWithIndex{ entry, i -> println "$i $entry.key: $entry.value" }
map.eachWithIndex{ key, value, i -> println "$i $key: $value" }
}
@Test
void filteringAndSearchingMaps(){
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
assertTrue(map.find{ it.value == "New York"}.key == "city")
assertTrue(map.findAll{ it.value == "New York"} == [city : "New York"])
map.grep{it.value == "New York"}.each{ it -> assertTrue(it.key == "city" && it.value == "New York")}
assertTrue(map.every{it -> it.value instanceof String} == false)
assertTrue(map.any{it -> it.value instanceof String} == true)
}
@Test
void collect(){
def map = [1: [name:"Jerry", age: 42, city: "New York"],
2: [name:"Long", age: 25, city: "New York"],
3: [name:"Dustin", age: 29, city: "New York"],
4: [name:"Dustin", age: 34, city: "New York"]]
def names = map.collect{entry -> entry.value.name} // returns only list
assertTrue(names == ["Jerry", "Long", "Dustin", "Dustin"])
def uniqueNames = map.collect([] as HashSet){entry -> entry.value.name}
assertTrue(uniqueNames == ["Jerry", "Long", "Dustin"] as Set)
def idNames = map.collectEntries{key, value -> [key, value.name]}
assertTrue(idNames == [1:"Jerry", 2: "Long", 3:"Dustin", 4: "Dustin"])
def below30Names = map.findAll{it.value.age < 30}.collect{key, value -> value.name}
assertTrue(below30Names == ["Long", "Dustin"])
}
@Test
void group(){
def map = [1:20, 2: 40, 3: 11, 4: 93]
def subMap = map.groupBy{it.value % 2}
println subMap
assertTrue(subMap == [0:[1:20, 2:40 ], 1:[3:11, 4:93]])
def keySubMap = map.subMap([1, 2])
assertTrue(keySubMap == [1:20, 2:40])
}
@Test
void sorting(){
def map = [ab:20, a: 40, cb: 11, ba: 93]
def naturallyOrderedMap = map.sort()
assertTrue([a:40, ab:20, ba:93, cb:11] == naturallyOrderedMap)
def compSortedMap = map.sort({ k1, k2 -> k1 <=> k2 } as Comparator)
assertTrue([a:40, ab:20, ba:93, cb:11] == compSortedMap)
def cloSortedMap = map.sort({ it1, it2 -> it1.value <=> it1.value })
assertTrue([cb:11, ab:20, a:40, ba:93] == cloSortedMap)
}
}
core-groovy/src/test/groovy/com/baeldung/map/MapTest.groovy
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package com.baeldung.groovy.map;
import static groovy.test.GroovyAssert.*
import org.junit.Test
class MapTest{
@Test
void createMap() {
def emptyMap = [:]
assertNotNull(emptyMap)
assertTrue(emptyMap instanceof java.util.LinkedHashMap)
def map = [name:"Jerry", age: 42, city: "New York"]
assertTrue(map.size() == 3)
}
@Test
void addItemsToMap() {
def map = [name:"Jerry"]
map["age"] = 42
map.city = "New York"
def hobbyLiteral = "hobby"
def hobbyMap = [(hobbyLiteral): "Singing"]
map.putAll(hobbyMap)
assertTrue(map == [name:"Jerry", age: 42, city: "New York", hobby:"Singing"])
assertTrue(hobbyMap.hobby == "Singing")
assertTrue(hobbyMap[hobbyLiteral] == "Singing")
map.plus([1:20]) // returns new map
map << [2:30]
}
@Test
void getItemsFromMap() {
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
assertTrue(map["name"] == "Jerry")
assertTrue(map.name == "Jerry")
def propertyAge = "age"
assertTrue(map[propertyAge] == 42)
}
@Test
void removeItemsFromMap() {
def map = [1:20, a:30, 2:42, 4:34, ba:67, 6:39, 7:49]
def minusMap = map.minus([2:42, 4:34]);
assertTrue(minusMap == [1:20, a:30, ba:67, 6:39, 7:49])
minusMap.removeAll{it -> it.key instanceof String}
assertTrue( minusMap == [ 1:20, 6:39, 7:49])
minusMap.retainAll{it -> it.value %2 == 0}
assertTrue( minusMap == [1:20])
}
@Test
void iteratingOnMaps(){
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
map.each{ entry -> println "$entry.key: $entry.value" }
map.eachWithIndex{ entry, i -> println "$i $entry.key: $entry.value" }
map.eachWithIndex{ key, value, i -> println "$i $key: $value" }
}
@Test
void filteringAndSearchingMaps(){
def map = [name:"Jerry", age: 42, city: "New York", hobby:"Singing"]
assertTrue(map.find{ it.value == "New York"}.key == "city")
assertTrue(map.findAll{ it.value == "New York"} == [city : "New York"])
map.grep{it.value == "New York"}.each{ it -> assertTrue(it.key == "city" && it.value == "New York")}
assertTrue(map.every{it -> it.value instanceof String} == false)
assertTrue(map.any{it -> it.value instanceof String} == true)
}
@Test
void collect(){
def map = [1: [name:"Jerry", age: 42, city: "New York"],
2: [name:"Long", age: 25, city: "New York"],
3: [name:"Dustin", age: 29, city: "New York"],
4: [name:"Dustin", age: 34, city: "New York"]]
def names = map.collect{entry -> entry.value.name} // returns only list
assertTrue(names == ["Jerry", "Long", "Dustin", "Dustin"])
def uniqueNames = map.collect([] as HashSet){entry -> entry.value.name}
assertTrue(uniqueNames == ["Jerry", "Long", "Dustin"] as Set)
def idNames = map.collectEntries{key, value -> [key, value.name]}
assertTrue(idNames == [1:"Jerry", 2: "Long", 3:"Dustin", 4: "Dustin"])
def below30Names = map.findAll{it.value.age < 30}.collect{key, value -> value.name}
assertTrue(below30Names == ["Long", "Dustin"])
}
@Test
void group(){
def map = [1:20, 2: 40, 3: 11, 4: 93]
def subMap = map.groupBy{it.value % 2}
println subMap
assertTrue(subMap == [0:[1:20, 2:40 ], 1:[3:11, 4:93]])
def keySubMap = map.subMap([1, 2])
assertTrue(keySubMap == [1:20, 2:40])
}
@Test
void sorting(){
def map = [ab:20, a: 40, cb: 11, ba: 93]
def naturallyOrderedMap = map.sort()
assertTrue([a:40, ab:20, ba:93, cb:11] == naturallyOrderedMap)
def compSortedMap = map.sort({ k1, k2 -> k1 <=> k2 } as Comparator)
assertTrue([a:40, ab:20, ba:93, cb:11] == compSortedMap)
def cloSortedMap = map.sort({ it1, it2 -> it1.value <=> it1.value })
assertTrue([cb:11, ab:20, a:40, ba:93] == cloSortedMap)
}
}
core-java-8/src/test/java/com/baeldung/java8/optional/OptionalUnitTest.java
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@Test
public void givenNonNull_whenCreatesNonNullable_thenCorrect() {
String name = "baeldung";
Optional.of(name);
Optional<String> opt = Optional.of(name);
assertTrue(opt.isPresent());
}
@Test(expected = NullPointerException.class)
public void givenNull_whenThrowsErrorOnCreate_thenCorrect() {
String name = null;
Optional<String> opt = Optional.of(name);
Optional.of(name);
}
@Test
public void givenNonNull_whenCreatesOptional_thenCorrect() {
String name = "baeldung";
Optional<String> opt = Optional.of(name);
assertEquals("Optional[baeldung]", opt.toString());
assertTrue(opt.isPresent());
}
@Test
public void givenNonNull_whenCreatesNullable_thenCorrect() {
String name = "baeldung";
Optional<String> opt = Optional.ofNullable(name);
assertEquals("Optional[baeldung]", opt.toString());
assertTrue(opt.isPresent());
}
@Test
public void givenNull_whenCreatesNullable_thenCorrect() {
String name = null;
Optional<String> opt = Optional.ofNullable(name);
assertEquals("Optional.empty", opt.toString());
assertFalse(opt.isPresent());
}
// Checking Value With isPresent()
core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java
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package com.baeldung.array;
import java.util.ArrayList;
import java.util.Arrays;
public class AddElementToEndOfArray {
public Integer[] addElementUsingArraysCopyOf(Integer[] srcArray, int elementToAdd) {
Integer[] destArray = Arrays.copyOf(srcArray, srcArray.length + 1);
destArray[destArray.length - 1] = elementToAdd;
return destArray;
}
public Integer[] addElementUsingArrayList(Integer[] srcArray, int elementToAdd) {
Integer[] destArray = new Integer[srcArray.length + 1];
ArrayList<Integer> arrayList = new ArrayList<>(Arrays.asList(srcArray));
arrayList.add(elementToAdd);
return arrayList.toArray(destArray);
}
public Integer[] addElementUsingSystemArrayCopy(Integer[] srcArray, int elementToAdd) {
Integer[] destArray = new Integer[srcArray.length + 1];
System.arraycopy(srcArray, 0, destArray, 0, srcArray.length);
destArray[destArray.length - 1] = elementToAdd;
return destArray;
}
}
core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java
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package com.baeldung.array;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertArrayEquals;
public class AddElementToEndOfArrayUnitTest {
AddElementToEndOfArray addElementToEndOfArray;
@Before
public void init() {
addElementToEndOfArray = new AddElementToEndOfArray();
}
@Test
public void givenSourceArrayAndElement_whenAddElementUsingArraysCopyIsInvoked_thenNewElementMustBeAdded() {
Integer[] sourceArray = {1, 2, 3, 4};
int elementToAdd = 5;
Integer[] destArray = addElementToEndOfArray.addElementUsingArraysCopyOf(sourceArray, elementToAdd);
Integer[] expectedArray = {1, 2, 3, 4, 5};
assertArrayEquals(expectedArray, destArray);
}
@Test
public void givenSourceArrayAndElement_whenAddElementUsingArrayListIsInvoked_thenNewElementMustBeAdded() {
Integer[] sourceArray = {1, 2, 3, 4};
int elementToAdd = 5;
Integer[] destArray = addElementToEndOfArray.addElementUsingArrayList(sourceArray, elementToAdd);
Integer[] expectedArray = {1, 2, 3, 4, 5};
assertArrayEquals(expectedArray, destArray);
}
@Test
public void givenSourceArrayAndElement_whenAddElementUsingSystemArrayCopyIsInvoked_thenNewElementMustBeAdded() {
Integer[] sourceArray = {1, 2, 3, 4};
int elementToAdd = 5;
Integer[] destArray = addElementToEndOfArray.addElementUsingSystemArrayCopy(sourceArray, elementToAdd);
Integer[] expectedArray = {1, 2, 3, 4, 5};
assertArrayEquals(expectedArray, destArray);
}
}
core-java-collections-map/README.md
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=========
## Core Java Collections 2
### Relevant Articles:
- Java - Copying a HashMap
core-java-collections-map/pom.xml
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-collections-map</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-collections-map</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.eclipse.collections</groupId>
<artifactId>eclipse-collections</artifactId>
<version>${eclipse.collections.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${openjdk.jmh.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${openjdk.jmh.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-exec</artifactId>
<version>${commons-exec.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
<openjdk.jmh.version>1.19</openjdk.jmh.version>
<junit.platform.version>1.2.0</junit.platform.version>
<commons-lang3.version>3.8.1</commons-lang3.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<avaitility.version>1.7.0</avaitility.version>
<assertj.version>3.11.1</assertj.version>
<eclipse.collections.version>7.1.0</eclipse.collections.version>
<commons-exec.version>1.3</commons-exec.version>
</properties>
</project>
core-java-collections-set/README.md
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=========
## Core Java Sets Cookbooks and Examples
### Relevant Articles:
- [Set Operations in Java](http://www.baeldung.com/set-operations-in-java)
core-java-collections-set/pom.xml
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-collections-set</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-collections-set</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<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>
</dependencies>
<properties>
<commons-collections4.version>4.3</commons-collections4.version>
<guava.version>27.1-jre</guava.version>
</properties>
</project>
core-java-collections-set/src/test/java/com/baeldung/set/SetOperationsUnitTest.java
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package com.baeldung.set;
import static org.junit.Assert.*;
import org.apache.commons.collections4.SetUtils;
import org.junit.Test;
import com.google.common.collect.Sets;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class SetOperationsUnitTest {
private Set<Integer> setA = setOf(1,2,3,4);
private Set<Integer> setB = setOf(2,4,6,8);
private static Set<Integer> setOf(Integer... values) {
return new HashSet<Integer>(Arrays.asList(values));
}
@Test
public void givenTwoSets_WhenWeRetainAll_ThenWeIntersectThem() {
Set<Integer> intersectSet = new HashSet<>(setA);
intersectSet.retainAll(setB);
assertEquals(setOf(2,4), intersectSet);
}
@Test
public void givenTwoSets_WhenWeAddAll_ThenWeUnionThem() {
Set<Integer> unionSet = new HashSet<>(setA);
unionSet.addAll(setB);
assertEquals(setOf(1,2,3,4,6,8), unionSet);
}
@Test
public void givenTwoSets_WhenRemoveAll_ThenWeGetTheDifference() {
Set<Integer> differenceSet = new HashSet<>(setA);
differenceSet.removeAll(setB);
assertEquals(setOf(1,3), differenceSet);
}
@Test
public void givenTwoStreams_WhenWeFilterThem_ThenWeCanGetTheIntersect() {
Set<Integer> intersectSet = setA.stream()
.filter(setB::contains)
.collect(Collectors.toSet());
assertEquals(setOf(2,4), intersectSet);
}
@Test
public void givenTwoStreams_WhenWeConcatThem_ThenWeGetTheUnion() {
Set<Integer> unionSet = Stream.concat(setA.stream(), setB.stream())
.collect(Collectors.toSet());
assertEquals(setOf(1,2,3,4,6,8), unionSet);
}
@Test
public void givenTwoStreams_WhenWeFilterThem_ThenWeCanGetTheDifference() {
Set<Integer> differenceSet = setA.stream()
.filter(val -> !setB.contains(val))
.collect(Collectors.toSet());
assertEquals(setOf(1,3), differenceSet);
}
@Test
public void givenTwoSets_WhenWeUseApacheCommonsIntersect_ThenWeGetTheIntersect() {
Set<Integer> intersectSet = SetUtils.intersection(setA, setB);
assertEquals(setOf(2,4), intersectSet);
}
@Test
public void givenTwoSets_WhenWeUseApacheCommonsUnion_ThenWeGetTheUnion() {
Set<Integer> unionSet = SetUtils.union(setA, setB);
assertEquals(setOf(1,2,3,4,6,8), unionSet);
}
@Test
public void givenTwoSets_WhenWeUseGuavaIntersect_ThenWeGetTheIntersect() {
Set<Integer> intersectSet = Sets.intersection(setA, setB);
assertEquals(setOf(2,4), intersectSet);
}
@Test
public void givenTwoSets_WhenWeUseGuavaUnion_ThenWeGetTheUnion() {
Set<Integer> unionSet = Sets.union(setA, setB);
assertEquals(setOf(1,2,3,4,6,8), unionSet);
}
}
core-java-lang-oop-2/README.md
+1
View File
@@ -3,3 +3,4 @@
## Core Java Lang OOP 2 Cookbooks and Examples
### Relevant Articles:
- [Generic Constructors in Java](https://www.baeldung.com/java-generic-constructors)
core-java-modules/pom.xml
+19
View File
@@ -0,0 +1,19 @@
<?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>
<artifactId>core-java-modules</artifactId>
<name>core-java-modules</name>
<packaging>pom</packaging>
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<modules>
<module>pre-jpms</module>
</modules>
</project>
core-java-modules/pre-jpms/pom.xml
+74
View File
@@ -0,0 +1,74 @@
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>pre-jpms</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>pre-jpms</name>
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
</dependencies>
<build>
<finalName>pre-jpms</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>
${project.build.directory}/dependency-jars/
</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>com.baeldung.prejpms.App</mainClass>
<addClasspath>true</addClasspath>
<classpathPrefix>dependency-jars/</classpathPrefix>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
core-java-modules/pre-jpms/src/main/java/com/baeldung/prejpms/App.java
+77
View File
@@ -0,0 +1,77 @@
package com.baeldung.prejpms;
import java.io.StringWriter;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.sun.crypto.provider.SunJCE;
import sun.misc.BASE64Encoder;
import sun.reflect.Reflection;
public class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
public static void main(String[] args) throws Exception {
getCrytpographyProviderName();
getCallStackClassNames();
getXmlFromObject(new Book(100, "Java Modules Architecture"));
getBase64EncodedString("Java");
}
private static void getCrytpographyProviderName() {
try {
LOGGER.info("1. JCE Provider Name: {}\n", new SunJCE().getName());
} catch (Throwable e) {
LOGGER.error(e.toString());
}
}
private static void getCallStackClassNames() {
try {
StringBuffer sbStack = new StringBuffer();
int i = 0;
Class<?> caller = Reflection.getCallerClass(i++);
do {
sbStack.append(i + ".")
.append(caller.getName())
.append("\n");
caller = Reflection.getCallerClass(i++);
} while (caller != null);
LOGGER.info("2. Call Stack:\n{}", sbStack);
} catch (Throwable e) {
LOGGER.error(e.toString());
}
}
private static void getXmlFromObject(Book book) {
try {
Marshaller marshallerObj = JAXBContext.newInstance(Book.class)
.createMarshaller();
marshallerObj.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
StringWriter sw = new StringWriter();
marshallerObj.marshal(book, sw);
LOGGER.info("3. Xml for Book object:\n{}", sw);
} catch (Throwable e) {
LOGGER.error(e.toString());
}
}
private static void getBase64EncodedString(String inputString) {
try {
String encodedString = new BASE64Encoder().encode(inputString.getBytes());
LOGGER.info("4. Base Encoded String: {}", encodedString);
} catch (Throwable e) {
LOGGER.error(e.toString());
}
}
}
core-java-modules/pre-jpms/src/main/java/com/baeldung/prejpms/Book.java
+37
View File
@@ -0,0 +1,37 @@
package com.baeldung.prejpms;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "book")
public class Book {
private long id;
private String name;
public Book() {
}
public Book(long id, String name) {
this.id = id;
this.name = name;
}
@XmlAttribute
public void setId(Long id) {
this.id = id;
}
@XmlElement(name = "title")
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public Long getId() {
return id;
}
}
core-java-modules/pre-jpms/src/main/resources/logback.xml
+10
View File
@@ -0,0 +1,10 @@
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>[%level] %msg%n</pattern>
</encoder>
</appender>
<root level="debug">
<appender-ref ref="STDOUT" />
</root>
</configuration>
core-kotlin-io/pom.xml
+26 -7
View File
@@ -20,9 +20,21 @@
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>${junit.jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>${byte-buddy.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -37,6 +49,12 @@
<version>${kotlin.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test-junit5</artifactId>
<version>${kotlin.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@@ -69,10 +87,11 @@
</build>
<properties>
<kotlin.version>1.2.71</kotlin.version>
<junit.platform.version>1.1.1</junit.platform.version>
<junit.vintage.version>5.2.0</junit.vintage.version>
<kotlin.version>1.3.30</kotlin.version>
<junit.jupiter.version>5.4.2</junit.jupiter.version>
<mockito.version>2.27.0</mockito.version>
<byte-buddy.version>1.9.12</byte-buddy.version>
<assertj.version>3.10.0</assertj.version>
</properties>
</project>
</project>
core-kotlin-2/src/test/kotlin/com/baeldung/console/ConsoleIOUnitTest.kt → core-kotlin-io/src/test/kotlin/com/baeldung/console/ConsoleIOUnitTest.kt
View File
core-kotlin-2/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker → core-kotlin-io/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker
View File
core-kotlin/src/main/kotlin/com/baeldung/jvmannotations/Document.kt
+31
View File
@@ -0,0 +1,31 @@
package com.baeldung.jvmannotations
import java.util.*
interface Document {
@JvmDefault
fun getType() = "document"
}
class TextDocument : Document {
override fun getType() = "text"
fun transformList(list : List<Number>) : List<Number> {
return list.filter { n -> n.toInt() > 1 }
}
fun transformListInverseWildcards(list : List<@JvmSuppressWildcards Number>) : List<@JvmWildcard Number> {
return list.filter { n -> n.toInt() > 1 }
}
var list : List<@JvmWildcard Any> = ArrayList()
}
class XmlDocument(d : Document) : Document by d
fun main() {
val myDocument = TextDocument()
val myTextDocument = XmlDocument(myDocument)
println("${myDocument.getType()} ${myTextDocument.getType()}")
}
core-kotlin/src/main/kotlin/com/baeldung/jvmannotations/HtmlDocument.java
+9
View File
@@ -0,0 +1,9 @@
package com.baeldung.jvmannotations;
public class HtmlDocument implements Document {
@Override
public String getType() {
return "HTML";
}
}
core-kotlin/src/main/kotlin/com/baeldung/jvmannotations/Message.kt
+66
View File
@@ -0,0 +1,66 @@
@file:JvmName("MessageHelper")
@file:JvmMultifileClass //used
package com.baeldung.jvmannotations
import java.util.*
@JvmName("getMyUsername")
fun getMyName() : String {
return "myUserId"
}
object MessageBroker {
@JvmStatic
var totalMessagesSent = 0
const val maxMessageLength = 0
@JvmStatic
fun clearAllMessages() {
}
@JvmStatic
@JvmOverloads
@Throws(Exception::class)
fun findMessages(sender : String, type : String = "text", maxResults : Int = 10) : List<Message> {
if(sender.isEmpty()) {
throw Exception()
}
return ArrayList()
}
}
class Message {
// this would cause a compilation error since sender is immutable
// @set:JvmName("setSender")
val sender = "myself"
// this works as name is overridden
@JvmName("getSenderName")
fun getSender() : String = "from:$sender"
@get:JvmName("getReceiverName")
@set:JvmName("setReceiverName")
var receiver : String = ""
@get:JvmName("getContent")
@set:JvmName("setContent")
var text = ""
// generates a warning
@get:JvmName("getId")
private val id = 0
@get:JvmName("hasAttachment")
var hasAttachment = true
var isEncrypted = true
fun setReceivers(receiverNames : List<String>) {
}
@JvmName("setReceiverIds")
fun setReceivers(receiverNames : List<Int>) {
}
}
core-kotlin/src/main/kotlin/com/baeldung/jvmannotations/MessageConverter.kt
+6
View File
@@ -0,0 +1,6 @@
@file:JvmMultifileClass
@file:JvmName("MessageHelper") //applies to all top level functions / variables / constants
package com.baeldung.jvmannotations
fun convert(message: Message) {
}
fastUtil/pom.xml
+44
View File
@@ -0,0 +1,44 @@
<?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>fastUtil</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- https://mvnrepository.com/artifact/it.unimi.dsi/fastutil -->
<dependency>
<groupId>it.unimi.dsi</groupId>
<artifactId>fastutil</artifactId>
<version>8.2.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjdk.jmh/jmh-core -->
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.19</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
fastUtil/src/test/java/com/baeldung/BigArraysUnitTest.java
+23
View File
@@ -0,0 +1,23 @@
package com.baeldung;
import it.unimi.dsi.fastutil.ints.IntBigArrays;
import org.junit.Test;
import static junit.framework.Assert.assertEquals;
public class BigArraysUnitTest {
@Test
public void givenValidAray_whenWrapped_checkAccessFromIntBigArraysMethodsCorrect() {
int[] oneDArray = new int[] { 2, 1, 5, 2, 1, 7 };
int[][] twoDArray = IntBigArrays.wrap(oneDArray.clone());
int firstIndex = IntBigArrays.get(twoDArray, 0);
int lastIndex = IntBigArrays.get(twoDArray, IntBigArrays.length(twoDArray)-1);
assertEquals(2, firstIndex);
assertEquals(7, lastIndex);
}
}
fastUtil/src/test/java/com/baeldung/FastUtilTypeSpecificBenchmarkUnitTest.java
+58
View File
@@ -0,0 +1,58 @@
package com.baeldung;
import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
import it.unimi.dsi.fastutil.ints.IntSet;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import java.util.*;
import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@State(Scope.Benchmark)
public class FastUtilTypeSpecificBenchmarkUnitTest {
@Param({"100", "1000", "10000", "100000"})
public int setSize;
@Benchmark
public IntSet givenFastUtilsIntSetWithInitialSizeSet_whenPopulated_checkTimeTaken() {
IntSet intSet = new IntOpenHashSet(setSize);
for(int i = 0; i < setSize; i++){
intSet.add(i);
}
return intSet;
}
@Benchmark
public Set<Integer> givenCollectionsHashSetWithInitialSizeSet_whenPopulated_checkTimeTaken() {
Set<Integer> intSet = new HashSet<Integer>(setSize);
for(int i = 0; i < setSize; i++){
intSet.add(i);
}
return intSet;
}
public static void main(String... args) throws RunnerException {
Options opts = new OptionsBuilder()
.include(".*")
.warmupIterations(1)
.measurementIterations(2)
.jvmArgs("-Xms2g", "-Xmx2g")
.shouldDoGC(true)
.forks(1)
.build();
new Runner(opts).run();
}
}

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