The isEmpty() method of java.util.concurrent.LinkedTransferQueue is an in-built function in Java which checks if this queue is empty or not.
Syntax:
LinkedTransferQueue.isEmpty()
Return Value: The function returns a boolean value. It returns true if the LinkedTransferQueue is empty and returns false otherwise.
Below programs illustrate the LinkedTransferQueue.isEmpty() method:
Program 1: In this program the LinkedTransferQueue is non-empty.
// Java Program Demonstrate isEmpty()// method of LinkedTransferQueue import java.util.concurrent.*; class LinkedTransferQueueIsEmptyExample1 { public static void main(String[] args) { // Initializing the queue LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>(); // Adding elements to this queue for (int i = 10; i <= 15; i++) queue.add(i); // Checks if this queue is empty or not if (queue.isEmpty()) System.out.println("The queue is empty."); else System.out.println("The queue is non-empty."); }} |
Output:
The queue is non-empty.
Program 2:In this program the LinkedTransferQueue is empty.
// Java Program Demonstrate isEmpty()// method of LinkedTransferQueue */ import java.util.concurrent.*; class LinkedTransferQueueIsEmptyExample2 { public static void main(String[] args) { // Initializing the queue LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>(); // Checks if this queue is empty or not if (queue.isEmpty()) System.out.println("The queue is empty."); else System.out.println("The queue is non-empty."); }} |
Output:
The queue is empty.
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedTransferQueue.html#isEmpty()
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