i want inteface code in java:(

package thisIs.a.valid.packageAnd;
public interface MyInterface {
}

I think he wants a javax.swing.* program.

What you ask is impossible because we don't know your requirements. We cannot just start writing a program that does nothing using random commands with no purpose.

Not to mention that we don't do other's people homework on demand.
In the meantime watch how the counter of your thread reaches minus infinity :)

PS: By the way, what is that counter for and how it is different from the reputation points?

www.netbeans.org
create new project in it, and right click the package name on the left hand side and make new "Jpanel" or "Jframe" and this will give you a GUI based GUI builder...any success compiling with it, then look at my thread on making my own taskbar
any corrections via pm greatly appreciated

PS: By the way, what is that counter for and how it is different from the reputation points?

On your profile page is a new "helpfulness percentage rating". These ups and down go toward that (the reputation still exists alongside this though, and these don't seem to affect that).