Convert RGB values to Integer

Question

So in a BufferedImage, you receive a single integer that has the RGB values represented in it. So far I use the following to get the RGB values from it:

// rgbs is an array of integers, every single integer represents the // RGB values combined in some way int r = (int) ((Math.pow(256,3) + rgbs[k]) / 65536); int g = (int) (((Math.pow(256,3) + rgbs[k]) / 256 ) % 256 ); int b = (int) ((Math.pow(256,3) + rgbs[k]) % 256); 

And so far, it works.

What I need to do is figure out how to get an integer so I can use BufferedImage.setRGB(), because that takes the same type of data it gave me.

Answer 1

I think the code is something like:

int rgb = red; rgb = (rgb << 8) + green; rgb = (rgb << 8) + blue; 

Also, I believe you can get the individual values using:

int red = (rgb >> 16) & 0xFF; int green = (rgb >> 8) & 0xFF; int blue = rgb & 0xFF;