Java PriorityQueue.peek()
Syntax
PriorityQueue.peek() has the following syntax.
public E peek()
Example
In the following code shows how to use PriorityQueue.peek() method.
/* w ww . j a v a 2 s. co m*/
import java.util.PriorityQueue;
public class Main {
public static void main(String args[]) {
PriorityQueue<Integer> prq = new PriorityQueue<Integer>();
for ( int i = 3; i < 10; i++ ){
prq.add(i) ;
}
System.out.println(prq);
// get the head from the queue
Integer head = prq.peek();
System.out.println("Head of the queue is: "+ head);
}
}
The code above generates the following result.
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