Why use hexadecimal constants?

Question

Sometimes I see Integer constants defined in hexadecimal, instead of decimal numbers. This is a small part I took from a GL10 class:

public static final int          


        

Answer 1

Ahh but 0xDECAFF is both prime (1460959), and a pleasent purple color (in RGB).

For Colors hex is MUCH more convenient.

FF FF FF is white 00 00 FF is blue FF 00 00 is red 00 FF 00 is green It's easy to see the color relationships as numbers (though the gamma and fidelity of the human eye tend to throw things off, but we'll ignore those inconvenient physical facts for pure mathamatical precision!