Help me Converting jar to jpg and jpg to jar

[nap_patague]

hello to everyone

im making this simple app that will convert jar file to jpeg picture and jpeg to jar file. i already created all necessary method but i do have problem with jpeg to jar.

this my method to create a single pixel color of one character

private Color createPixel(int x) {
        Color c = null;
        int r = 0, g = 0, b = 0;

        int t = x / 255;
         if (t > 255) {
            b = 255;
            g = ((t % 255) * 255) + x % 255;
            if (g > 255) {
                r = g % 255;
                g = g / 255;

            } else {
            }
        } else {
            if (t < 255) {
                 r = x % 255;
                g = x/255;
            }
        }
return new Color(r, g, b);
}

and this is for converting rgb to char code

for (int y = 0; y < image.getHeight(); y++) {
                for (int x = 0; x < image.getWidth(); x++) {
                    total = 0;
                    int c = image.getRGB(x, y);
                    r = (c & 0x00ff0000) >> 16;
                    g = (c & 0x0000ff00) >> 8;
                    b = c & 0x000000ff;
                    if (r == 255 && g == 255 && b == 255) {
                        System.out.println("end");
                        y = image.getHeight();
                        break;
                    } else {

                        if (r > 0) {
                            total += r;
                        }
                        if (g > 0) {
                            total += g * 255;
                        }
                        if (b == 255) {
                            total += 255 * 255;
                        } else {
                            total += b;
                        }

but when i run my app. the character on the original is not equal to the converted character

example is : þÊ is become ??

the only problem is when the char code is greather than 60000 other char code are correct.

hope someone can help me..