import java.util.ArrayList;
import java.util.Collections;

/*
 *  Example of  
 *  fill(List<? super T> list,T obj) method
 */

public class CollectionsExample
{

    public static void main(String[] args)
    {

        ArrayList<Integer> arrayList = new ArrayList<Integer>();

        arrayList.add(2000);
        arrayList.add(3000);
        arrayList.add(4000);
        arrayList.add(1000);

        System.out.println("arrayList : " + arrayList + "\n");

        /*
         * Replaces all of the elements of the specified list with the specified
         * element.
         */

        Collections.fill(arrayList,20);

        System.out.println("After fill with '20', arrayList : " + arrayList);

    }

}