Copy ArrayList To ArrayList Using Colletion In Java

Chapter: Collections Last Updated: 06-04-2016 17:30:01 UTC

Program:

            /* ............... START ............... */
                
import java.util.ArrayList;
import java.util.Collections;

public class JavaArrayListToArrayListCollection {
	public static void main(String[] args) {

		// create first ArrayList object
		ArrayList arrayList1 = new ArrayList();

		// Add elements to ArrayList
		arrayList1.add("1");
		arrayList1.add("2");
		arrayList1.add("3");

		ArrayList arrayList2 = new ArrayList();

		arrayList2.add("A");
		arrayList2.add("B");
		arrayList2.add("C");

		System.out.println("Before copy :  " + arrayList2);

		Collections.copy(arrayList2, arrayList1);

		System.out.println("After copy : " + arrayList2);
	}
}
                /* ............... END ............... */
        

Output

Before copy :  [A, B, C]
After copy : [1, 2, 3]

Notes:

  • Java example shows how to copy all elements of one Java ArrayList object to another Java ArrayList object using copy method of Collections class.

Tags

Collection,Java ArrayList To ArrayList,Java

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