Alarm Control Unit in BlueJ

Create Alarm Control Unit, using bluej. Keypad containing numbers 0-9, button for arming and disarming, also button to sound the alarm. As simple as possible. Within same table, i presume throughout using key-listener, add text field which would be displaying numbers pressed, "armed" when right combination entered, "disarmed" , error-handling ( incorrect password, please try again), alarm sounded, alarm muted. Button "arm" suppose to change to "dissarm" so same button is used for arming and dissarming alarm. Same with "sound" alarm supose to change to "mute". No soundeffects, no special background or shadows. As plain as possible. Its jus a college project. Thanks Regards