Clase de robot Java | Obtener el color de píxel de un punto dado

Java

// Java program to get the pixel color of
// given screen coordinates
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class color extends JFrame
    implements ActionListener {
    // textfield to get x, y coordinates
    static JTextField x, y;
 
    // button
    static JButton b;
 
    // create a frame
    static JFrame f;
 
    // label
    static JLabel l;
 
    public static void main()
    {
 
        // create a frame
        f = new JFrame("pixel Color");
 
        // label to show the RGB value
        l = new JLabel("no value");
 
        // create the text field
        x = new JTextField(16);
        y = new JTextField(16);
 
        // create a button
        b = new JButton("find");
 
        // create an object of the class
        color co = new color();
 
        // add ActionListener
        b.addActionListener(co);
 
        // create a panel
        JPanel p = new JPanel();
 
        // add textfield and button to the panel
        p.add(x);
        p.add(y);
        p.add(b);
        p.add(l);
 
        // add the panel
        f.add(p);
 
        // set the size of the frame
        f.setSize(500, 500);
        f.show();
    }
 
    // if the button is pressed
    public void actionPerformed(ActionEvent e)
    {
        String s = e.getActionCommand();
        if (s.equals("find")) {
            int xp, yp;
 
            // get user inputs of x and y position
            xp = Integer.parseInt(x.getText());
            yp = Integer.parseInt(y.getText());
 
            // try and catch block to handle exceptions
            try {
                // create an object of robot class
                Robot r = new Robot();
 
                // get the pixel color
                c = r.getPixelColor(xp, yp);
            }
            catch (Exception evt) {
                // print error message
                System.err.println(evt.getMessage());
            }
 
            Color c;
 
            // set the RGB value to the label
            // and to its foreground
            l.setForeground(c);
            l.setText("Red = " + c.getRed() + ",
Green = " + c.getGreen() + ", Blue = " + c.getBlue());
        }
    }
}