Question

I have a multidimensional int array that has either a ‘0’ or a ‘1’. I would like to create an image that resembles a heat map. The elements that have a ‘0’ would be of one color and those of ‘1’ would be of another color.
For instance

int [][] test = {{0,0,1}, {1,1,0}, {1,1,1}}

I would get an image of “3 x 3”, kind of like this.

wwr
rrw
rrr

where white denotes white and r red.

Thanks for any suggestions.

Answer 1

The setRGB() or getRaster() methods of BufferedImage work well for this. The examples cited here use SwingWorker, and this example uses a Runnable thread.