Example #3 – Insertion and Removal Operation on PriorityQueue After removing all the elements, we printed the queue and obtained an empty bracket at the end. The removal order is the same as per the insertion. Here, we have used the function isEmpty() to check when the queue becomes empty after removing elements. Example #2 – Let’s remove the added elements one by one ![]() Note here that the order of insertion is the same with output from left to write. Given below are the different examples of Queue in Java: Example #1 – Add operation with LinkedList implementation Still, in the case of examination, the object will be returned without actually removing from the queue. In the case of the remove operation, an object will be removed from the queue. There are three types of operation in this kind of operation: insertion, the second is removal, and the third is retrieval or examination. So as explained, two types of methods throw an exception and return a special value.
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