Java PriorityQueue - remove() Method
The java.util.PriorityQueue.remove() method is used to remove a single instance of the specified element from this queue, if it is present. Every removal of element results into reducing the queue size by one unless the queue is empty. The method returns true if and only if this queue contained the specified element.
Syntax
public boolean remove(Object obj)
Parameters
obj |
Specify the element which need to be removed from this queue, if present. |
Return Value
Returns true if this queue changed as a result of the call.
Exception
NA.
Example:
In the example below, the java.util.PriorityQueue.remove() method is used to remove a single instance of the specified element from the given queue.
import java.util.*;
public class MyClass {
public static void main(String[] args) {
//creating a priority queue
PriorityQueue<Integer> PQueue = new PriorityQueue<Integer>();
//populating the priority queue
PQueue.add(10);
PQueue.add(20);
PQueue.add(30);
PQueue.add(40);
PQueue.add(30);
//printing the priority queue
System.out.println("PQueue contains: " + PQueue);
//remove a instance of 30 from the queue
PQueue.remove(30);
//printing the priority queue
System.out.println("PQueue contains: " + PQueue);
}
}
The output of the above code will be:
PQueue contains: [10, 20, 30, 40, 30] PQueue contains: [10, 20, 30, 40]
❮ Java.util - PriorityQueue
