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‎.classpath

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" output="target/classes" path="src/main/java">
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<attributes>
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<attribute name="optional" value="true"/>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" output="target/test-classes" path="src/test/java">
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<attributes>
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<attribute name="optional" value="true"/>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="output" path="target/classes"/>
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</classpath>

‎.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>JavaCollections</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.m2e.core.maven2Builder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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<nature>org.eclipse.m2e.core.maven2Nature</nature>
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</natures>
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</projectDescription>

‎.settings/org.eclipse.jdt.core.prefs

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.8
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
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org.eclipse.jdt.core.compiler.source=1.8

‎.settings/org.eclipse.m2e.core.prefs

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activeProfiles=
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eclipse.preferences.version=1
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resolveWorkspaceProjects=true
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version=1

‎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">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.itqpleyva</groupId>
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<artifactId>JavaCollections</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>JavaCollections</name>
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</project>

‎src/main/java/Collections/CollectionsMain.java

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package Collections;
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import java.util.ArrayList;
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import java.util.Collections;
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public class CollectionsMain {
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public static void main(String[] args) {
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//working with ArrayList
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//creating arraylist
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ArrayList<String> array = new ArrayList<String>();
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array.add("Pepe");
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array.add("Pepe1");
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array.add("Pepe2");
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array.add("Pepe3");
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array.add("Pepe4");
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array.add("Pepe5");
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System.out.println("printing arraylist");//printing arraylist
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System.out.println(array);
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System.out.println("------------------------------------------------------------");
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System.out.println("printing arraylist one by one using method reference");//printing arraylist one by one using method reference
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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System.out.println("deleting first element by index");//deleting by index
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array.remove(0);
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System.out.println("------------------------------------------------------------");
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System.out.println("printing after deleting");//printing after deleting
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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System.out.println("adding new element in first position by index");//adding new element
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array.add(0, "New Pepe");
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System.out.println("------------------------------------------------------------");
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System.out.println("printing after adding new element");//printing after adding new element
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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array.set(0, "Pepe Changed");
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System.out.println("printing after set element in the first position");//printing after deleting
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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array.remove("Pepe Changed");
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System.out.println("printing after deleting Pepe Changed");//printing after deleting
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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System.out.println("printing array size");
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System.out.println(array.size());
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System.out.println("------------------------------------------------------------");
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System.out.println("sorting arraylist");
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Collections.sort(array);
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array.forEach(System.out::println);
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System.out.println("------------------------------------------------------------");
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System.out.println("printing element index");
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System.out.println(array.indexOf("Pepe2"));
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System.out.println("------------------------------------------------------------");
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System.out.println("getting element by position");
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System.out.println(array.get(1));
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System.out.println("------------------------------------------------------------");
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System.out.println("if array contain element Pepe1");
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System.out.println(array.contains("Pepe1"));
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System.out.println("------------------------------------------------------------");
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System.out.println("deleting all elements in arraylist");
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array.clear();
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array.forEach(System.out::println);
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}
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}

‎target/classes/Collections/CollectionsMain.class

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‎target/classes/META-INF/MANIFEST.MF

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Manifest-Version: 1.0
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Built-By: itqpleyva
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Build-Jdk: 1.8.0_171
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Created-By: Maven Integration for Eclipse
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‎target/classes/META-INF/maven/com.itqpleyva/JavaCollections/pom.properties

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#Generated by Maven Integration for Eclipse
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#Mon Mar 16 06:05:52 GMT-04:00 2020
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version=0.0.1-SNAPSHOT
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groupId=com.itqpleyva
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m2e.projectName=JavaCollections
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m2e.projectLocation=C\:\\Users\\itqpleyva\\Documents\\java-workspace\\JavaCollections
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artifactId=JavaCollections

‎target/classes/META-INF/maven/com.itqpleyva/JavaCollections/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">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.itqpleyva</groupId>
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<artifactId>JavaCollections</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>JavaCollections</name>
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</project>

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