decode String to Color - Java 2D Graphics

Java examples for 2D Graphics:Color String

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Description

decode String to Color

Demo Code


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

public class Main {
    public static void main(String[] argv) throws Exception {
        String cs = "java2s.com";
        System.out.println(decode(cs));
    }//from   w w w.  jav a  2 s. com

    public static Color decode(String cs) {
        if (cs.startsWith("#"))
            cs = cs.substring(1);
        else if (cs.startsWith("0x"))
            cs = cs.substring(2);

        if (cs.length() < 6)
            return new Color(255, 255, 255, 255);
        ;

        boolean hasAlpha = cs.length() == 8;
        int rgbOffset = hasAlpha ? 2 : 0;

        int a = hasAlpha ? Integer.parseInt(cs.substring(0, 2), 16) : 255;
        int r = Integer.parseInt(
                cs.substring(0 + rgbOffset, 2 + rgbOffset), 16);
        int g = Integer.parseInt(
                cs.substring(2 + rgbOffset, 4 + rgbOffset), 16);
        int b = Integer.parseInt(
                cs.substring(4 + rgbOffset, 6 + rgbOffset), 16);

        return new Color(r, g, b, a);
    }
}

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