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 Program to demonstrate takeLast() // method of BlockingDeque import 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);
}
} |
Blocking Deque: [7855642, 35658786, 5278367, 74381793] Head of Blocking Deque: 74381793 Blocking Deque: [7855642, 35658786, 5278367]
Program 2:
// Java Program to demonstrate takeLast() // method of BlockingDeque import 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()