PriorityBlockingQueue remove() method in Java
Last Updated :
26 Nov, 2018
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
// 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
// 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("Geeks");
pbq.put("forGeeks");
pbq.put("A Computer");
pbq.put("Portal");
// print queue
System.out.println("Queue: " + pbq);
// remove Geeks
boolean res = pbq.remove("Geeks");
System.out.println("\nGeeks 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, Geeks, forGeeks]
Geeks removed: true
Queue: [A Computer, Portal, forGeeks]
SandeepJain removed: false
Queue: [A Computer, Portal, forGeeks]