hey i've just created two threads "A" and "B" and i want pass a reference from "B" to "A" and vice-versa just like this:
public class TwoThreadsWithReferences
{
public static void main (String argv [ ] )
{

AThread A = null;
BThread B = null;

A = new AThread ( B );
B = new BThread ( A );

A.start();
B.start();
}
}

in this case in particular with the second instance is no problem because the referenece of A has been instanciated but in the first case the reference of B that im passing to "A" has null because "B" is instanciated in the following line the question is how can I pass the references together avoidig a NullPointerException in the first case without reinstanciating "B" inside the constructor "A" like this?

A = new AThread ( B = new BThread ( A ));
it will be work but i need a more elegant solution perhaps making the references inside the threads in a Setter method for example and calling the "Setter" method in main before starting the threads??????? but i dont know how to solve this method example






public class AThread extends Thread
{
.....member variables


constructor
public AThread()
{
.....
}


public void run()
{



..................... code
}
public void Setter()
{
what should i put here??????????????????
}



any help ????????? many thanks in advance