RobotDemo.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class RobotDemo implements ActionListener {
    JFrame fr;
    JLabel lb1;
    JLabel lb2;
    JTextField tf1;
    JTextField tf2;
    JButton btn1;
    public RobotDemo() throws AWTException {
        fr = new JFrame();
        lb1 = new JLabel("userName");
        lb2 = new JLabel("Password");
        tf1 = new JTextField(10);
        tf2 = new JTextField(10);
        btn1 = new JButton("Login");
        btn1.addActionListener(this);
        fr.add(lb1);
        fr.add(tf1);
        fr.add(lb2);
        fr.add(tf2);
        fr.add(btn1);
        fr.setLayout(new FlowLayout());
        fr.setVisible(true);
        fr.setSize(200, 400);
        fr.setResizable(false);
        fr.setLocation(200, 300);
        Robot rob = new Robot(); //throws AWTException
        //Moves the cursor from 10,10 to 350,350
        for (int i = 1; i < 35; i++) {
            rob.mouseMove(i * 10, i * 10);
            try {
                Thread.sleep(50);
            } catch (Exception e) {}
        }
        for (int i = 1; i < 10; i++) {
            rob.keyPress(KeyEvent.VK_CAPS_LOCK);
            try {
                Thread.sleep(500);
            } catch (Exception e) {}
            rob.keyRelease(KeyEvent.VK_CAPS_LOCK);
        }
        int keyCodes[] = new int[] {
            KeyEvent.VK_S, KeyEvent.VK_A, KeyEvent.VK_T, KeyEvent.VK_Y, KeyEvent.VK_A
        };
        int key;
        for (int i = 0; i < keyCodes.length; i++) {
            key = keyCodes[i];
            rob.keyPress(key);
            rob.keyRelease(key);
            try {
                Thread.sleep(500);
            } catch (Exception e) {}
        }
        for (int i = 35; i < 38; i++) {
            rob.mouseMove(i * 10, i * 10);
            try {
                Thread.sleep(50);
            } catch (Exception e) {}
        }
        //clicks mouse left button,so that we can get focus in pwd textfield    
        rob.mousePress(InputEvent.BUTTON1_MASK);
        rob.mouseRelease(InputEvent.BUTTON1_MASK);
        keyCodes = new int[] {
            KeyEvent.VK_T, KeyEvent.VK_E, KeyEvent.VK_C, KeyEvent.VK_H
        };
        for (int key1: keyCodes) {
            rob.keyPress(key1);
            rob.keyRelease(key1);
            try {
                Thread.sleep(500);
            } catch (Exception e) {}
        }
        rob.mouseMove(300, 400);
        rob.mousePress(InputEvent.BUTTON1_MASK);
        rob.mouseRelease(InputEvent.BUTTON1_MASK);
    }
    public static void main(String[] args) throws AWTException {
        new RobotDemo();
    }
    public void actionPerformed(ActionEvent arg0) {
        JOptionPane.showMessageDialog(null, "alert", "alert", JOptionPane.ERROR_MESSAGE);
    }
}