![]() ![]() An instance of the Queue is created of type LinkedList.This example shows how different methods are used in the program & what these methods are returning. size(): This method returns the count of the element available in the queue.Įxamples to Implement Java Queue Interfaceīelow are the examples of implementing java queue interface: Example #1.If the element is found to be empty, it creates exceptions. remove(): This method used to remove & return the front element of the queue.If the queue is empty, then it returns null. poll(): This method removes an element from the front of the queue & returns the front element from the queue.If the queue is empty, then it returns NULL peek(): peek() method is almost similar to the element() method.The only difference between add() and the offer is that if the add method cannot add the element in the queue, it creates an exception while the offer method doesn’t. offer(): This method is also used to insert elements in the queue.In the example section, we can see how the element() method works. If the queue is empty, then it generates exceptions. element(): element() is one of the important methods that returns the queue head element.It returns true if the response is successful otherwise, it generates exceptions. ![]() ![]() add(): add() method used to insert elements in the queue.Some of the commonly used methods of queue interface are given below Queue q = new LinkedList() Queue Interface Methods Queue instances with the restricted data type can be created using the following given syntax. ![]()
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