I do not think that gui newsgroup is the right place to discuss this, so
I set the followups to comp.lang.java.programmer
> I'm a newbie of Java language and I would like to know how I could
> create a GUI in Java for a console program written in C, 'cause I'd
[quoted text clipped - 3 lines]
> Do you know further sites/references where I can find some stuff and
> help?
To access functionality written in c from Java (or vice versa) you need
to use JNI (Java Native Interface).
Online book about JNI
http://java.sun.com/docs/books/jni/
JNI Spec
http://java.sun.com/j2se/1.5.0/docs/guide/jni/index.html
SWIG (a tool to make using JNI a LOT easier)
http://www.swig.org
-Antti-