Decodes a color of the form #hhhhhhhh or #hhhhhh, (for example, #39F80D8C, or #9A67E9), where each two digit hexadecimal part is the red, green, blue, and alpha, respectively. - Java 2D Graphics

Java examples for 2D Graphics:Color RGB

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Description

Decodes a color of the form #hhhhhhhh or #hhhhhh, (for example, #39F80D8C, or #9A67E9), where each two digit hexadecimal part is the red, green, blue, and alpha, respectively.

Demo Code


//package com.java2s;
import java.awt.*;

public class Main {
    public static void main(String[] argv) throws Exception {
        String s = "java2s.com";
        System.out.println(decode(s));
    }//from   ww w .  j a v  a2s .c  o  m

    /**
     * Decodes a color of the form #hhhhhhhh or #hhhhhh, (for example,
     * #39F80D8C, or #9A67E9), where each two digit hexadecimal part is the red,
     * green, blue, and alpha, respectively. The alpha component is optional,
     * and will be assumed to be FF if not present.
     * 
     * @param s
     *            the string to decode
     * @return a color described by the string parameter
     */
    public static Color decode(String s) {
        if (s.startsWith("#")) {
            //hex string
            if (s.length() == 9) {
                //includes alpha
                int alpha = Integer.parseInt(s.substring(7), 16);
                Color temp = Color.decode(s.substring(0, 7));
                return new Color(temp.getRed(), temp.getGreen(),
                        temp.getBlue(), alpha);
            } else if (s.length() == 7) {
                //does not include alpha
                return Color.decode(s);
            }
        }
        return Color.BLACK;
    }
}

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