PriorityBlockingQueue remove() method in Java
The remove(Object o) method of PriorityBlockingQueue is used to delete an element from this queue. This method removes a single instance of the element passed as the parameter, if it is present.
It returns true if and only if the element was removed, else it returned false.
Syntax:
public boolean remove(Object o)
Parameter: This method accepts a mandatory parameter o which is the element to be removed from this queue, if present.
Return Value: This method returns true if the specified element was removed successfully. Else this method returns false.
Below programs illustrate remove() method in PriorityBlockingQueue:
Program 1:
// Java Program Demonstrate remove() // method of PriorityBlockingQueue import java.util.concurrent.PriorityBlockingQueue; public class GFG { public static void main(String[] args) { // create object of PriorityBlockingQueue PriorityBlockingQueue<Integer> pbq = new PriorityBlockingQueue<Integer>(); // Add element to PriorityBlockingQueue pbq.put( 1 ); pbq.put( 2 ); pbq.put( 3 ); pbq.put( 4 ); // print queue System.out.println( "Queue: " + pbq); // remove 2 boolean res = pbq.remove( 2 ); System.out.println( "\n2 removed: " + res); // print queue System.out.println( "Queue: " + pbq); // remove 5 res = pbq.remove( 5 ); System.out.println( "\n5 removed: " + res); // print queue System.out.println( "Queue: " + pbq); } } |
Output:
Queue: [1, 2, 3, 4] 2 removed: true Queue: [1, 4, 3] 5 removed: false Queue: [1, 4, 3]
// Java Program Demonstrate remove() // method of PriorityBlockingQueue import java.util.concurrent.PriorityBlockingQueue; public class GFG { public static void main(String[] args) { // create object of PriorityBlockingQueue PriorityBlockingQueue<String> pbq = new PriorityBlockingQueue<String>(); // Add element to PriorityBlockingQueue pbq.put( "Beginner" ); pbq.put( "forBeginner" ); pbq.put( "A Computer" ); pbq.put( "Portal" ); // print queue System.out.println( "Queue: " + pbq); // remove Beginner boolean res = pbq.remove( "Beginner" ); System.out.println( "\nBeginner removed: " + res); // print queue System.out.println( "Queue: " + pbq); // remove SandeepJain res = pbq.remove( "SandeepJain" ); System.out.println( "\nSandeepJain removed: " + res); // print queue System.out.println( "Queue: " + pbq); } } |
Output:
Queue: [A Computer, Portal, Beginner, forBeginner] Beginner removed: true Queue: [A Computer, Portal, forBeginner] SandeepJain removed: false Queue: [A Computer, Portal, forBeginner]
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