LinkedBlockingDeque size() method in Java

LinkedBlockingDeque isEmpty() method in Java with Example

Last Updated : 24 Dec, 2018

The isEmpty() method of LinkedBlockingDeque in Java is used to check whether this LinkedBlockingDeque is empty or not. It returns an boolean value stating the same. Syntax:

public boolean isEmpty()

Parameters: This method does not accepts parameter. Returns: The method returns an boolean value which states that this instance of the LinkedBlockingDeque is empty or not. Below examples illustrates the LinkedBlockingDeque.isEmpty() method: Program 1:

Java

// Java Program Demonstrate isEmpty()
// method of LinkedBlockingDeque

import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;

public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {

        // 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);

        System.out.println("Linked Blocking Deque: " + LBD);

        // using isEmpty() function
        System.out.println("Is Linked Blocking Deque empty: "
                           + LBD.isEmpty());
    }
}

Output:

Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793]
Is Linked Blocking Deque empty: false

Program 2:

Java

// Java Program Demonstrate isEmpty()
// method of LinkedBlockingDeque
// when the list contains characters

import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;

public class GFG {
    public static void main(String[] args)
        throws IllegalStateException
    {

        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<String> LBD
            = new LinkedBlockingDeque<String>();

        System.out.println("Linked Blocking Deque: " + LBD);

        // using isEmpty() function
        System.out.println("Is Linked Blocking Deque empty: "
                           + LBD.isEmpty());
    }
}

Output:

Linked Blocking Deque: []
Is Linked Blocking Deque empty: true

LinkedBlockingDeque size() method in Java

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