The take() method of LinkedBlockingDeque returns and removes the head of the Deque container from it. The method throws an InterruptedException if it is interrupted while waiting.
Syntax:
public E take()
Returns: This method returns the head of the Deque container.
Exception: The function throws a InterruptedException if it is interrupted while waiting.
Below programs illustrate take() method of LinkedBlockingDeque:
Program 1:
// Java Program to demonstrate take()// 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 front element and prints it System.out.println("Head of Linked Blocking Deque: " + LBD.take()); // prints the Deque System.out.println("Linked Blocking Deque: " + LBD); }} |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Head of Linked Blocking Deque: 7855642 Linked Blocking Deque: [35658786, 5278367, 74381793]
Program 2: To demonstrate InterruptedException
// Java Program to demonstrate take()// 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>(); // print Dequeue // the Deque is empty System.out.println("Linked Blocking Deque: " + LBD); try { // throws error as the list is empty // and it is interrupted while waiting System.out.println("Head of Linked Blocking Deque: " + LBD.take()); } catch (Exception e) { System.out.println("Exception: " + e); } }} |
RuntimeException:
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#take–
