RGB and ARGB in J2ME

RGB - It is a color combination value of Red Green Blue

Syntax: 0xRRGGBB

Example: -

0xFF0000 (or) 255, 0, 0 (Red color)

0x00FF00 (or) 0, 255, 0 (Green color)

0x0000FF (or) 0, 0, 255 (Blue color)

Red - the red component of the color being set in range 0-255

Green - the green component of the color being set in range 0-255

Blue - the blue component of the color being set in range 0-255

ARGB - It is a color combination value of Red Green Blue with Alpha channel

Syntax: 0xAARRGGBB

Example: -

0xFFFF0000 - Red color with white color background

0x00FF0000 - Red color with transparent background

Alpha – it specifies the opacity (transparency) of the pixel

[0x00 – Fully transparent and 0xFF – white background]

Red - the red component of the color being set in range 0-255

Green - the green component of the color being set in range 0-255

Blue - the blue component of the color being set in range 0-255

Convert RGB to ARGB

public int convert_RGB_to_ARGB(int rgb) {

int r = (rgb >> 16) & 0xFF;

int g = (rgb >> 8) & 0xFF;

int b = (rgb >> 0) & 0xFF;

return 0xff000000 | (r <<>

}

Convert ARGB to RGB

public int convert_ARGB_to_RGB(int argb) {

int a = (argb >> 24) & 0xFF;

int r = (argb >> 16) & 0xFF;

int g = (argb >> 8) & 0xFF;

int b = (argb >> 0) & 0xFF;

return (r <<>

}