ArrayDeque getLast() Method in Java (original) (raw)

Last Updated : 14 Oct, 2020

The java.util.ArrayDeque.getLast() method in Java is used to retrieve or fetch the last element of the ArrayDeque. In the process, the method does not delete the element from the deque instead it just returns the last element of the deque.
Syntax:

Array_Deque.getLast()

Parameters: The method does not take any parameter.
Return Value: The method returns the last element present in the Deque.
Exception: This method throws NoSuchElementException, if this deque is empty when called upon.

Below programs illustrate the Java.util.ArrayDeque.getLast() method:

Program 1:

Java `

// Java code to illustrate getLast() method of ArrayDeque import java.util.*;

public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque ArrayDeque de_que = new ArrayDeque();

    // Use add() method to add elements into the Deque
    de_que.add("Welcome");
    de_que.add("To");
    de_que.add("Geeks");
    de_que.add("4");
    de_que.add("Geeks");

    // Displaying the ArrayDeque
    System.out.println("ArrayDeque: " + de_que);

    // Displaying the Last element
    System.out.println("The last element is: " + de_que.getLast());
  
    // clear the deque
    de_que.clear();
    try {
       de_que.getLast();
    } catch(Exception ex) {
       System.out.println("Exception  "+ ex);
     }
}

}

`

Output:

ArrayDeque: [Welcome, To, Geeks, 4, Geeks] The last element is: Geeks

Program 2: Adding Integer elements into the Deque.

Java `

// Java code to illustrate getLast() method of ArrayDeque import java.util.*;

public class ArrayDequeDemo { public static void main(String args[]) { // Creating an empty ArrayDeque ArrayDeque de_que = new ArrayDeque();

    // Use add() method to add elements into the Deque
    de_que.add(10);
    de_que.add(15);
    de_que.add(30);
    de_que.add(20);
    de_que.add(5);

    // Displaying the ArrayDeque
    System.out.println("ArrayDeque: " + de_que);

    // Displaying the Last element
    System.out.println("The last element is: " + de_que.getLast());
}

}

`

Output:

ArrayDeque: [10, 15, 30, 20, 5] The last element is: 5