Copy Elements of One ArrayList to Another ArrayList - Java Collection Framework

Java examples for Collection Framework:ArrayList

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Description

Copy Elements of One ArrayList to Another ArrayList

Demo Code


import java.util.ArrayList;
import java.util.Collections;
 
public class Main {
 
  public static void main(String[] args) {
    ArrayList arrayList1 = new ArrayList();
   /*from ww w  .  jav a2 s .co  m*/
    arrayList1.add("1");
    arrayList1.add("2");
    arrayList1.add("3");
   
    //create another ArrayList object
    ArrayList arrayList2 = new ArrayList();
   
    //Add elements to Arraylist
    arrayList2.add("One");
    arrayList2.add("Two");
    arrayList2.add("Three");
    arrayList2.add("Four");
    arrayList2.add("Five");
   
    System.out.println("Before copy, Second ArrayList Contains : " + arrayList2);
   
    Collections.copy(arrayList2,arrayList1);
   
    System.out.println("After copy, Second ArrayList Contains : " + arrayList2);  
  }
}

Result


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