Chapter 20.2, Problem 20.2.4CP

Explanation of Solution

Method to add all the elements from one collection to another collection:

Addall(collection C) is the method used to add all the elements from one collection to another. The elements may be added individually.

Sample Program:

//Java program to illustrate addAll(Collection c)

import java.util.ArrayList;

public class Sample

{

 public static void main(String args[])

 {

     // Creating array list1

ArrayList<Integer> collect1 = new ArrayList<Integer>(5);

     // Adding elements to the list1

     collect1.add(12);

     collect1.add(20);

     collect1.add(45);

// prints all the elements available in array //list1

     System.out.println("Printing list1:");

     for (Integer number : collect1)

         System...