The remove() method of DelayQueue class in Java is used to remove a single instance of the given object say obj from this DelayQueue if it is present. It returns true if the given element is removed successfully otherwise it returns false.
Syntax:
public boolean remove(Object obj)
Parameters: This method takes a single object obj as parameter which is to be removed from this DealyQueue.
Return Value: It returns a boolean value which is true if the element has been successfully deleted otherwise it returns false.
Below program illustrate the remove() method of DelayQueue in Java:
// Java Program to illustrate the remove method// of DelayQueue class import java.util.concurrent.DelayQueue;import java.util.concurrent.Delayed;import java.util.concurrent.TimeUnit; public class GFG { public static void main(String args[]) { // Create a DelayQueue instance DelayQueue<Delayed> queue = new DelayQueue<Delayed>(); // Create an object of type Delayed Delayed ob = new Delayed() { public long getDelay(TimeUnit unit) { return 24; // some value is returned } public int compareTo(Delayed o) { if (o.getDelay(TimeUnit.DAYS) > this.getDelay(TimeUnit.DAYS)) return 1; else if (o.getDelay(TimeUnit.DAYS) == this.getDelay(TimeUnit.DAYS)) return 0; return -1; } }; // Add the object to DelayQueue queue.add(ob); // Print initial size of Queue System.out.println("Initial Size : " + queue.size()); // Remove the object ob from // this DelayQueue queue.remove(ob); // Print the final size of the DelayQueue System.out.println("Size after removing : " + queue.size()); }} |
Output:
Initial Size : 1 Size after removing : 0
