Java LinkedTransferQueue isEmpty() method

The isEmpty() method of LinkedTransferQueue class returns a Boolean value true if the defined queue contains no element. This method overrides the isEmpty() method in class AbstractCollection.

Syntax:

Specified By:

The isEmpty() method of LinkedTransferQueue class is specified by isEmpty()method in interface Collection.

Return:

This method returns a Boolean value true if the given queue contains no elements.

Example 1

import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueueIsEmptyExample1 {  
public static void main(String[] args) {  
LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>();  
for (int i = 1; i <= 4; i++) {  
//  Adding items to the tail of this queue  
queue.add(i);  
        }  
//returns true if the queue is empty  
if(queue.isEmpty()){  
System.out.println("Add some elements because the queue is empty.");  
        }  
else{  
System.out.println("Elements are : "+queue);  
        }  
    }  
}

Test it Now

Output:

Elements are : [1, 2, 3, 4]

Example 2

import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueueIsEmptyExample2 {  
public static void main(String[] args) {  
LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>();  
for (int i = 1; i <= 5; i++) {  
//  Adding items to the tail of this queue  
queue.add(i);  
        }  
queue.clear();  
if(queue.isEmpty()){  
System.out.println("isEmpty() method returns "+queue.isEmpty());  
System.out.println("Add some elements because the queue is empty.");  
        }  
else{  
System.out.println("isEmpty() method returns "+queue.isEmpty());  
System.out.println("Elements are : "+queue);  
        }  
    }  
}  

Test it Now

Output:

isEmpty() method returns true
Add some elements because the queue is empty.

Example 3

import java.util.Scanner;  
import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueueIsEmptyExample3 {  
static int size =3;  
public static void main(String[] args) {  
        Scanner scanner = new Scanner(System.in);  
        LinkedTransferQueue<String> queue = new LinkedTransferQueue<String>();  
if(queue.isEmpty()) {  
System.out.println("Enter three names ");  
for (int i = 1; i <= size; i++) {  
System.out.print(i+". Name = ");  
              String a = scanner.next();  
queue.add(a);  
          }  
System.out.println("Queue : "+queue);  
      }  
else{  
System.out.println("Queue is full");  
      }  
    }  
} 

Output:

Enter three names 
1. Name = Jack
2. Name = Harry
3. Name = John
Queue : [Jack, Harry, John]

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Java LinkedTransferQueue isEmpty() method

Syntax:

Specified By:

Return:

Example 1

Example 2

Example 3

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