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Java program to compare two queues

// Java program to compare two queues

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Queue < Integer > queue1 = new LinkedList < > ();
    Queue < Integer > queue2 = new LinkedList < > ();
    Queue < Integer > queue3 = new LinkedList < > ();

    queue1.add(10);
    queue1.add(20);
    queue1.add(30);

    queue2.add(40);
    queue2.add(50);

    queue3.add(40);
    queue3.add(50);

    if (queue1.equals(queue2))
      System.out.println("The queue1 and queue2 have similar elements.");
    else
      System.out.println("The queue1 and queue2 have different elements.");

    if (queue2.equals(queue3))
      System.out.println("The queue2 and queue3 have similar elements.");
    else
      System.out.println("The queue2 and queue3 have different elements.");
  }
}

Output

The queue1 and queue2 have different elements.
The queue2 and queue3 have similar elements.