Programming Forums - PriorityQueue problem

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PriorityQueue problem

Hello,

I am writing a program which needs at a certain point the use of priority queues. For that I use java.util.PriorityQueue. The problem is that javac refuses to compile my code, and I just don't understand why. For the following code :

// ...
import java.util.PriorityQueue;
// ...

it says

Error : The import java.util.PriorityQueue cannot be resolved

WHY? It is supposed to be there!!
Even with

// ...
import java.util.*;
// ...
PriorityQueue q = new PriorityQueue();

// ...
import java.*;
// ...
PriorityQueue q = new PriorityQueue();

it gives

Error : PriorityQueue cannot be resolved to a type

What is the problem?

Re: PriorityQueue problem

Some quick googling suggested that maybe you don't have the version of Java which supports Priority Queues. I am not sure, so maybe you could verify that for me, and/or see if there is a version which doesn't support them.

Re: PriorityQueue problem

Yup, apparently I don't have the "Java Collections Framework", which includes the PriorityQueue class, which is very weird, because I thought I installed everything java-related.

Well, thanks for pointing it out!

Re: PriorityQueue problem

No problem. Lucky guess. :)

Re: PriorityQueue problem

You need at least Java 1.5 :)