Online Java Compiler By
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import java.util.*; class TestCollection12{ public static void main(String args[]){ PriorityQueue
queue=new PriorityQueue
(); queue.add("Amit"); queue.add("Vijay"); queue.add("Karan"); queue.add("Jai"); queue.add("Rahul"); System.out.println("head:"+queue.element()); System.out.println("head:"+queue.peek()); System.out.println("iterating the queue elements:"); Iterator itr=queue.iterator(); while(itr.hasNext()){ System.out.println(itr.next()); } queue.remove(); queue.poll(); System.out.println("after removing two elements:"); Iterator
itr2=queue.iterator(); while(itr2.hasNext()){ System.out.println(itr2.next()); } } }
Output