LinkedBlockingDeque takeLast() method in Java
The takeLast() method of LinkedBlockingDeque 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.
Below programs illustrate takeLast() method of LinkedBlockingDeque:
Program 1:
// Java Program to demonstrate takeLast() // 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( "Head of Linked Blocking Deque: " + LBD.takeLast()); // prints the Deque System.out.println( "Linked Blocking Deque: " + LBD); } } |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Head of Linked Blocking Deque: 74381793 Linked Blocking Deque: [7855642, 35658786, 5278367]
Program 2:
// Java Program to demonstrate takeLast() // 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); LBD.clear(); // throws error as the list is empty and it // is interrupted while waiting System.out.println( "Head of Linked Blocking Deque: " + LBD.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/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#takeLast–
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