Replace All Elements Of Java ArrayList Example

/*
  Replace All Elements Of Java ArrayList Example
  This java example shows how to replace all elements of Java ArrayList object with
  the specified element using fill method of Collections class.
*/

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

public class ReplaceAllElementsOfArrayListExample {

  public static void main(String[] args) {
    //create a ArrayList object
    ArrayList arrayList = new ArrayList();
   
    //Add elements to ArrayList
    arrayList.add("A");
    arrayList.add("B");
    arrayList.add("D");
 
    /*
      To replace all elements of Java ArrayList with specified element use,
      static void fill(List list, Object element) method of Collections class.
    */
   
    System.out.println("Before replacement, ArrayList contains : " + arrayList);
   
    Collections.fill(arrayList,"REPLACED");
   
    System.out.println("After replacement, ArrayList contains : " + arrayList);
 
  }
}

/*
Output would be
Before replacement, ArrayList contains : [A, B, D]
After replacement, ArrayList contains : [REPLACED, REPLACED, REPLACED]
*/