Java LinkedTransferQueue offer() method

The offer() method of LinkedTransferQueue class is used to add the specified element at the tail of this LinkedTransferQueue. As the queue is unbounded, this method will never return false.

Syntax:

Specified By:

The isEmpty() method of LinkedTransferQueue class is specified by offer in interface BlockingQueue or by offer in interface Queue.

Throws:

The offer() method throws NullPointerException - if the defined element(e) holds null value.

Return Value:

The offer() method returns true on the successful insertion, otherwise returns false.

Example 1

import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueueOfferExample1 {  
    public static void main(String[] args) throws InterruptedException {  
    	LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>();  
        //offer() method insert the element at the tail of queue  
        queue.offer(34);  
        queue.offer(23);  
        queue.offer(64);  
        queue.offer(294);  
        System.out.println("Queue : "+queue);  
    }  
}

Test it Now

Output:

Queue : [34, 23, 64, 294]

Example 2

import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueueOfferExample2 {  
    public static void main(String[] args) throws InterruptedException {  
    	LinkedTransferQueue<String> queue = new LinkedTransferQueue<String>();  
        queue.add("John");  
        queue.add("Harry");  
        queue.add("Kristan");  
        queue.add("Jack");  
        //offer() method insert the element at the tail of queue  
        queue.offer("Marry");  
        for(String xyz:queue){  
            System.out.println(xyz);  
        }  
    }  
}  

Test it Now

Output: