Accesing static variable from another class in java

Question

I had a queue implemented as linked list in my multithreaded server. I want to access this queue from another class. Both classes are in the same package. I tried making this queue as public static and accessing it through getter, but without success Can somebody tell me what is the exact problem.

This is my code: Queue Declaration:

public static Queue<Request> q=new ConcurrentLinkedQueue<Request>();

public static void setQ(Queue<Request> q) {
        Connection.q = q;
    }

    public static Queue<Request> getQ() {
        return q;
    }

Accesing Queue:

Queue<Request> queue=new ConcurrentLinkedQueue<Request>(); 
queue=Connection.getQ();

Adding Value to Queue in thread of connection

q.add(r);

Answer 1

You can access a public static member of another class directly, using the notation ClassName.memberName:

public class Foo {
    public static String bar = "hi there";
}

public class Thing {
    public static void main(String[] args) {
        System.out.println(Foo.bar); // "hi there"
   }
}

public static data members are usually not a great idea (unless they've final), but if you need one, that's how you do it.