![]() It deletes the element from the container. I've never used such a queue (my mental image of a queue is that of a strictly FIFO structure), but after reading documentation, I think you can do this:įirst, you need to create the class of the object you want to store in the queue. The Queue implementation in Java has two methods to remove element, One is remove () which throws exception and other one is poll () which returns null for an empty queue. Do not confuse with heap memory, where the Java virtual machine allocates space for objects. The poll() method is used to remove the element present at the front of the Queue and return it. ![]() ![]() The remove() method throws an exception if the Queue is empty. The poll() method returns null if the Queue is empty. They differ in how they behave if the Queue is empty. Queue of methods in Java Ask Question Asked 6 years, 11 months ago Modified 6 years, 11 months ago Viewed 1k times 3 My goal is to have a Queue of method calls contained in a class that extends Thread whose run method pops a method call off of the queue once every 15 seconds. The poll() and remove() both removes the first element in the Queue. I am assuming that "PQ" means "priority queue". To take an element from a Java Queue you can call either its poll() or remove() method. ![]()
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