Grayscale.java in program

Grayscale.java

import java.awt.Color;

public class Grayscale

{

    public static void main(String[] args)

{

        Picture pic = new Picture(args[0]);

        int width  = pic.width();

        int height = pic.height();

       

        for (int x = 0; x < width; x++)

{

            for (int y = 0; y < height; y++)

 {

                Color color = pic.get(x, y);

                Color gray = Luminance.toGray(color);

                pic.set(x, y, gray);

            }

        }

        pic.show();

    }

}