Get 32 bit ARGB value based ints representing r,g, b, and a each in range (0-255) - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

Get 32 bit ARGB value based ints representing r,g, b, and a each in range (0-255)

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int r = 2;
        int g = 2;
        int b = 2;
        int a = 2;
        System.out.println(getARGB(r, g, b, a));
    }//from w  ww  .j  a v  a  2s .  c  om

    /**
     * Get 32 bit ARGB value based ints representing r,g, b, and a
     * each in range (0-255)
     * 
     * @param r
     * @param g
     * @param b
     * @return
     */
    public static int getARGB(int r, int g, int b, int a) {
        return (a << 24) + getRGB(r, g, b);
    }

    /**
     * Get 32 bit rgb value (ignoring alpha) based ints representing r,g and b
     * each in range (0-255)
     * 
     * @param r
     * @param g
     * @param b
     * @return
     */
    public static int getRGB(int r, int g, int b) {
        return (r << 16) + (g << 8) + b;
    }
}

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