The removeLast() method of LinkedBlockingDeque returns and removes the element at tail of the Deque container. The method throws an NoSuchElementException if the Deque container is empty.
Syntax:
public E removeLast()
Parameters: This method does not accepts any parameter.
Returns: This method returns the tail of the Deque container.
Exception: The function throws a NoSuchElementException if the Deque is empty.
Below programs illustrate removeLast() method of LinkedBlockingDeque:
Program 1:
// Java Program to demonstrate removeLast()// method of LinkedBlockingDeque import java.util.concurrent.LinkedBlockingDeque;import java.util.*; public class GFG { public static void main(String[] args) throws InterruptedException { // create object of LinkedBlockingDeque LinkedBlockingDeque<Integer> LBD = new LinkedBlockingDeque<Integer>(); // Add numbers to end of LinkedBlockingDeque LBD.add(7855642); LBD.add(35658786); LBD.add(5278367); LBD.add(74381793); // print Dequeue System.out.println("Linked Blocking Deque: " + LBD); // removes the last element and prints it System.out.println("Linked Blocking Deque: " + LBD.removeLast()); // prints the Deque System.out.println("Linked Blocking Deque: " + LBD); }} |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Linked Blocking Deque: 74381793 Linked Blocking Deque: [7855642, 35658786, 5278367]
Program 2:
// Java Program to demonstrate removeLast()// method of LinkedBlockingDeque import java.util.concurrent.LinkedBlockingDeque;import java.util.*; public class GFG { public static void main(String[] args) throws NoSuchElementException { // create object of LinkedBlockingDeque LinkedBlockingDeque<Integer> LBD = new LinkedBlockingDeque<Integer>(); // Add numbers to end of LinkedBlockingDeque LBD.add(7855642); LBD.add(35658786); LBD.add(5278367); LBD.add(74381793); // print Dequeue System.out.println("Linked Blocking Deque: " + LBD); // Deque is empty LBD.clear(); // throws an exception LBD.removeLast(); }} |
Output:
Exception in thread "main" java.util.NoSuchElementException
at java.util.concurrent.LinkedBlockingDeque.removeLast(LinkedBlockingDeque.java:462)
at GFG.main(GFG.java:29)
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#removeLast–
