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LinkedBlockingDeque remainingCapacity() method in Java

  • Last Updated : 17 Sep, 2018

The remainingCapacity() method of LinkedBlockingDeque returns the number of additional elements that this deque can ideally (in the absence of memory or resource constraints) accept without blocking.

remainingCapacity() = final_size() – current_size()

Syntax:

public int remainingCapacity()

Parameters: This method does not accepts any parameters.

Returns: This method returns the remaining number of elements that can be inserted into the deque container.



Below programs illustrate remainingCapacity() method of LinkedBlockingDeque:

Program 1:




// Java Program Demonstrate remainingCapacity()
// method of LinkedBlockingDeque
// when initial size is mentioned
  
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>(6);
  
        // 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);
        System.out.println("remainingCapacity = : "
                              LBD.remainingCapacity());
    }
}
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793]
remainingCapacity = : 2

Program 2:




// Java Program Demonstrate remainingCapacity()
// method of LinkedBlockingDeque
// when no initial size is mentioned
  
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>(6);
  
        // 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);
        System.out.println("remainingCapacity = "
                             LBD.remainingCapacity());
    }
}
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793]
remainingCapacity = 2

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#remainingCapacity–

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