ArrayDeque.getLast() in Java

ArrayDeque.getLast(): This method is available in java.util.ArrayDeque class of Java.

Syntax:

E java.util.ArrayDeque.getLast()

This method retrieves but does not remove, the last element of this deque.

Parameters: NA

Returns: the tail of this deque.

Throws:

NoSuchElementException - if this deque is empty.

Approach 1: When no exception

Java

import java.util.ArrayDeque;

public class ArrayDequegetLast {
    public static void main(String[] args) {

        ArrayDeque<Integer> arrayDeque = 
                    new ArrayDeque<Integer>();

        arrayDeque.add(1);
        arrayDeque.add(4);

        System.out.println(arrayDeque.getLast());

    }
}

Output:

4

Approach 2: NoSuchElementException 

Java

import java.util.ArrayDeque;

public class ArrayDequegetLast {
    public static void main(String[] args) {

        ArrayDeque<Integer> arrayDeque = 
                       new ArrayDeque<Integer>();

        System.out.println(arrayDeque.getLast());

    }
}

Output:

Exception in thread "main" java.util.NoSuchElementException
	at java.base/java.util.ArrayDeque.getLast(ArrayDeque.java:413)