The takeLast() method of BlockingDeque returns and removes the tail of the Deque container from it. The method throws an InterruptedException if it is interrupted while waiting.
Syntax:
public E takeLast()
Returns: This method returns the tail(last element) of the Deque container.
Exception: The function throws an InterruptedException if it is interrupted while waiting.
Note: The takeLast() method of BlockingDeque has been inherited from the LinkedBlockingDeque class in Java.
Below programs illustrate takeLast() method of BlockingDeque:
Program 1:
Java
// Java Program to demonstrate takeLast()// method of BlockingDequeimport java.util.concurrent.LinkedBlockingDeque;import java.util.concurrent.BlockingDeque;import java.util.*;public class GFG { public static void main(String[] args) throws InterruptedException { // create object of BlockingDeque BlockingDeque<Integer> BD = new LinkedBlockingDeque<Integer>(); // Add numbers to end of BlockingDeque BD.add(7855642); BD.add(35658786); BD.add(5278367); BD.add(74381793); // print Deque System.out.println("Blocking Deque: " + BD); // removes the last element and prints it System.out.println("Head of Blocking Deque: " + BD.takeLast()); // prints the Deque System.out.println("Blocking Deque: " + BD); }} |
Output:
Blocking Deque: [7855642, 35658786, 5278367, 74381793] Head of Blocking Deque: 74381793 Blocking Deque: [7855642, 35658786, 5278367]
Program 2:
Java
// Java Program to demonstrate takeLast()// method of BlockingDequeimport java.util.concurrent.LinkedBlockingDeque;import java.util.concurrent.BlockingDeque;import java.util.*;public class GFG { public static void main(String[] args) throws InterruptedException { // create object of BlockingDeque BlockingDeque<Integer> BD = new LinkedBlockingDeque<Integer>(); // Add numbers to end of BlockingDeque BD.add(7855642); BD.add(35658786); BD.add(5278367); BD.add(74381793); // print Deque System.out.println("Blocking Deque: " + BD); BD.clear(); // throws error as the list is empty and it // is interrupted while waiting System.out.println("Head of Blocking Deque: " + BD.takeLast()); }} |
Runtime Errors:
Max real time limit exceeded due to either by heavy load on server or by using sleep function
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/BlockingDeque.html#takeLast()
