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ArrayDeque getLast() Method in Java

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  • Last Updated : 14 Oct, 2020
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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<String> de_que = new ArrayDeque<String>();
 
        // 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<Integer> de_que = new ArrayDeque<Integer>();
 
        // 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


 


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