Robot Class in Java

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Robot Class in Java

      The Robot class in the Java AWT package is used to generate native system input events for the purposes of test automation, self-running demos, and other applications where control of the mouse and keyboard is needed. The primary purpose of Robot is to facilitate automated testing of Java platform implementations. In simple terms, the class provides control over the mouse and keyboard devices.

       We can handle input,output,and basic operation of maouse events with the help of Java Robot class..


example of robot class...
// Java program to working of Robot class
//This program is for Windoes. It opens notepad and types a message.
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.io.*;
public class RobotInJava
{
    public static void main(String[] args) throws IOException,
                           AWTException, InterruptedException
    {
        String command = "notepad.exe";
        Runtime run = Runtime.getRuntime();
        run.exec(command);
        try {
            Thread.sleep(2000);
        }
        catch (InterruptedException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        // Create an instance of Robot class
        Robot robot = new Robot();
        // Press keys using robot. A gap of
        // of 500 mili seconds is added after
        // every key press
        robot.keyPress(KeyEvent.VK_H);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_E);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_L);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_L);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_O);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_SPACE);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_F);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_R);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_O);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_M);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_SPACE);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_N);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_I);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_R);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_A);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_V);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_P);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_A);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_T);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_E);
        Thread.sleep(600);
        robot.keyPress(KeyEvent.VK_L);
        Thread.sleep(600);
    }
}

Output:--

 simple robot write "hello from niravpatel"

 
The code opens a blank Notepad file and types "hello from niravpatel" onto it with a delay
of 500 ms before typing out each character.



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