Moving Icons

[quiksand]

Hello there. I'm trying to create a program which will generate a moving icon and allow the player to capture it. After capturing, it will be able to calculate time taken. I am very new to java so if somebody could point me in the right direction or have something similar to this it would really help. Thank you in advance.

[sjalle]

But, it spawns many icons that move down the display and you have
to pop them with a mouseclick. When too many icons are there you loose,
you win if you manage to "kill" them all, the icons respawn all the time....

See attachment

PS: I have never won, I wonder if it's possible