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
