Simple java game for SE T303

I want a simple game in java that can be played on my SE T303 mobile phone. When you start the game it simply displays the text "24 game". Then, when you press the central key on the mobile phone it randomly chooses a number between 1 and 12. Random number are displayed in quick succession until after 5 seconds the definite number is displayed. The same is repeated after pressing the central key again. To exit the game one should press the button that contains the symbol of a phone.