Is it Possible to show a previously hidden JFrame using a keylistener

Question

here is my code, i basically just did a tester for the most common listeners, which i might later use in future projects, the main problem is in the keylistener at the bottom, i

Answer 1

As a general rule you should NOT be using a KeyListener. That was the old way of doing things when only AWT was around.

When using Swing you should be using Key Bindings. The binding won't solve your problem with invisible components and frames but this is approach all Swing component use.