java - Remove fillRect rectangles -

i trying make simple game have squares of random size , color appear @ random location on screen , have click on them. more click higher score.

i have working except, have no idea how make when click on square disappears.

here rectangle code

g.fillrect(cube.cubeposx, cube.cubeposy, cube.cubesize, cube.cubesize);

the position, size, , color predetermined , randomly selected in class file.

suggestions:

don't hard code rectangles you're drawing.
instead create collection of rectangles such arraylist<rectangle> drawn in loop in paintcomponent(...) method of drawing jpanel.
then remove them arraylist when user clicks on them.
this done in mouselistener , again uses loop,
but key being loop iterates backwards. reason rectangles on "top" of others last ones drawn. should first ones removed if clicked on.
you call repaint() on drawing jpanel (or jcomponent) after removing rectangle.

Sharma