Retrieves, but does not remove, the head of this queue. This method differs from PriorityQueue#peek()
only in that it throws an exception if this queue is empty.
package com.logicbig.example.priorityqueue;
import java.util.PriorityQueue;
public class ElementExample2 {
public static void main(String... args) {
PriorityQueue<String> pq = new PriorityQueue<>();
pq.element();
}
}
Output
Caused by: java.util.NoSuchElementException
at java.base/java.util.AbstractQueue.element(AbstractQueue.java:136)
at com.logicbig.example.priorityqueue.ElementExample2.main(ElementExample2.java:14)
... 6 more