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2 Replies Latest reply: Nov 5, 2011 6:46 PM by EJP RSS

Behaviour of PriorityQueue using Java 6

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I have a below code to test PriorityQueue ordering of elements using it's natural order.

Output of SOP1 is clear to me.

I was expecting
SOP2 as : [a, b, d]
SOP3 as : [a, b, c, d]

import java.util.*;
class PQTest {
public static void main(String... args) {
PriorityQueue<String> pq = new PriorityQueue<String>();
     System.out.println(pq); //SOP1 output [b, d]
     System.out.println(pq); //SOP2 output [a, d, b]
     System.out.println(pq); //SOP3 output [a, c, b, d]

Could somebody shed the light?
Appreciate your help.


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