Java Program to Convert Hex Color Code to RGB Value

This Java program converts a hex color code (e.g., '#ffffff') to its corresponding RGB value (e.g., RGB(255,255,255)). The program takes the hex input as a command-line argument and prints the RGB output.

public class HexToRGBConverter {
    public static void main(String[] args) {
        // Check if the hex color code is provided as a command line argument
        if (args.length == 0) {
            System.out.println("Hex color code not provided.");
            return;
        }

        // Get the hex color code from the command line argument
        String hexCode = args[0];

        // Remove the '#' symbol if present
        if (hexCode.startsWith("#")) {
            hexCode = hexCode.substring(1);
        }

        // Check if the hex color code is valid
        if (hexCode.length() != 6) {
            System.out.println("Invalid hex color code.");
            return;
        }

        // Extract the red, green, and blue components from the hex color code
        int red = Integer.parseInt(hexCode.substring(0, 2), 16);
        int green = Integer.parseInt(hexCode.substring(2, 4), 16);
        int blue = Integer.parseInt(hexCode.substring(4, 6), 16);

        // Print the RGB value
        System.out.println("RGB(" + red + "," + green + "," + blue + ")");
    }
}

To run this program, open a command prompt or terminal, navigate to the directory where the Java file is saved, and compile and run the program using the following commands:

javac HexToRGBConverter.java
java HexToRGBConverter #ffffff

Replace '#ffffff' with any hex color code you want to convert to RGB. The program will output the corresponding RGB value.