Help me ;

[wux bill]

first thank you for your coming;
I am a frshman in java;
I have learned java for about one year.
now I am leaning << Distributed Programing with java>> ( The author is Qusay H.Mahmoud >>
My problem is should I need two computer to learn that?
this nignt I run a serverSocket program and a ClientSocket program
It thows NullPointerException;

[David O'Meara]

Welcome!

We have a forum for Distributed Computing, so I will move your thread there.

Dave

[Nathan Pruett]

No, you do not *have* to have 2 computers to use distributed java (of any kind ports/sockets, RMI, CORBA, etc.) - you can use it to talk between 2 JVMs on one machine.

Sorry, the NullPointerException is from something else

But I'm sure you can get help on whatever the real problem is, too - can you post the stack trace of your NullPointerException, and the line of code it occurrs on?