[olatunbode]

Hi,

You cant call a non-static method by using Classname.Methodname format. You have to first create an object of the Class first, then use that object to call the methd. For instance:

PriorityQueue x = new PriorityQueue();
x.count();

or use a faster approach...
new PriorityQueue().count();

any of these should work.

Take care!

Jide