what's it called?

hello

i am rather new to java.

i want to create a form that when i click a button on it opens another window. i have several books but i don't know what this is called so can't look it up!!! i have looked through the books quite a bit but nothing is screaming at me.

Can anybody tell me the name of this process please?

[349 byte] By [yellowrosea] at [2007-11-26 12:20:09]