Java.util.ArrayDeque.peekLast() Method



Description

The java.util.ArrayDeque.peekLast() method retrieves the last element of this deque(but does not remove). Returns null if this deque is empty.

Declaration

Following is the declaration for java.util.ArrayDeque.peekLast() method

public E peekLast()

Parameters

NA

Return Value

This method returns the tail of this deque, or null if this deque is empty.

Exception

NA

Example

The following example shows the usage of java.util.ArrayDeque.peekLast() method.

package com.tutorialspoint;

import java.util.ArrayDeque;
import java.util.Deque;

public class ArrayDequeDemo {
   public static void main(String[] args) {
      
      // create an empty array deque with an initial capacity
      Deque<Integer> deque = new ArrayDeque<Integer>(8);

      // use add() method to add elements in the deque
      deque.add(25);
      deque.add(30);
      deque.add(20);
      deque.add(18);        

      // this will retrieve end value
      int retval = deque.peekLast();
      System.out.println("Retrieved Element is " + retval);

      // printing all the elements available in deque
      for (Integer number : deque) {
         System.out.println("Number = " + number);
      }
   }
}

Let us compile and run the above program, this will produce the following result −

Retrieved Element is 18
Number = 25
Number = 30
Number = 20
Number = 18
java_util_arraydeque.htm
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