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This commit is contained in:
mcasari 2023-08-22 19:49:54 +02:00
parent c6e1f95e42
commit 8a6e3f233e
5 changed files with 80 additions and 78 deletions
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22
shallow-deep-copy/pom.xml
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@ -1,16 +1,16 @@
<?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>shallow-deep-copy</artifactId>
<name>shallow-deep-copy</name>
<packaging>jar</packaging>
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>shallow-deep-copy</artifactId>
<name>shallow-deep-copy</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
</project>

32
shallow-deep-copy/src/main/java/com/baeldung/shallowdeepcopy/Dependency.java
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@ -1,23 +1,23 @@
package com.baeldung.shallowdeepcopy;
public class Dependency implements Cloneable {
private int value = 13;
public Dependency(int value) {
super();
this.value = value;
}
private int value = 13;
public int getValue() {
return value;
}
public Dependency(int value) {
super();
this.value = value;
}
public void setValue(int value) {
this.value = value;
}
public int getValue() {
return value;
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
public void setValue(int value) {
this.value = value;
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
}

48
shallow-deep-copy/src/main/java/com/baeldung/shallowdeepcopy/Main.java
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@ -1,31 +1,31 @@
package com.baeldung.shallowdeepcopy;
public class Main implements Cloneable {
private Dependency dependency;
public Main(Dependency dependency) {
super();
this.dependency = dependency;
}
private Dependency dependency;
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
public Main(Dependency dependency) {
super();
this.dependency = dependency;
}
public Object deepClone() throws CloneNotSupportedException {
Main dependentClone = (Main) super.clone();
Dependency dependencyClone = (Dependency) this.dependency.clone();
dependentClone.setDependency(dependencyClone);
return dependentClone;
}
public Dependency getDependency() {
return dependency;
}
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
public Object deepClone() throws CloneNotSupportedException {
Main dependentClone = (Main) super.clone();
Dependency dependencyClone = (Dependency) this.dependency.clone();
dependentClone.setDependency(dependencyClone);
return dependentClone;
}
public Dependency getDependency() {
return dependency;
}
public void setDependency(Dependency dependency) {
this.dependency = dependency;
}
public void setDependency(Dependency dependency) {
this.dependency = dependency;
}
}

19
shallow-deep-copy/src/main/resources/logback.xml
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@ -1,13 +1,14 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<appender name="STDOUT"
class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
</configuration>

37
shallow-deep-copy/src/test/java/com/baeldung/shallowdeepcopy/ShallowDeepCopyUnitTest.java
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@ -5,23 +5,24 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
class ShallowDeepCopyUnitTest {
@Test
public void givenAnObjectAndADependency_whenShallowClonedAndDepencyChanges_ThenDepencyHasNewValue() throws Exception {
Dependency dependency = new Dependency(13);
Main main = new Main(dependency);
Main shallowClone = (Main) main.clone();
dependency.setValue(17);
assertEquals(17, shallowClone.getDependency().getValue());
}
@Test
public void givenAnObjectAndADependency_whenDeepClonedAndDepencyChanges_ThenDepencyKeepsOldValue() throws Exception {
Dependency dependency = new Dependency(13);
Main main = new Main(dependency);
Main deepClone = (Main) main.deepClone();
dependency.setValue(17);
assertEquals(13, deepClone.getDependency().getValue());
}
@Test
public void givenAnObjectAndADependency_whenShallowClonedAndDepencyChanges_ThenDepencyHasNewValue() throws Exception {
Dependency dependency = new Dependency(13);
Main main = new Main(dependency);
Main shallowClone = (Main) main.clone();
dependency.setValue(17);
assertEquals(17, shallowClone.getDependency()
.getValue());
}
@Test
public void givenAnObjectAndADependency_whenDeepClonedAndDepencyChanges_ThenDepencyKeepsOldValue() throws Exception {
Dependency dependency = new Dependency(13);
Main main = new Main(dependency);
Main deepClone = (Main) main.deepClone();
dependency.setValue(17);
assertEquals(13, deepClone.getDependency()
.getValue());
}
}