Type in the Notepad using Java

Let's make a java program that will open up notepad and type some text in it .

You will have to import 3 libraries which we would be using :

import java.awt.*;
import java.awt.event.KeyEvent;
import java.io.IOException;

Create a class and add a main method , in this program we will have to throw 3 exceptions

1. IOException
2. InterruptedException
3. AWTException

We will write this line to open up notepad

Runtime.getRuntime().exec("notepad.exe");

We will use Thread.sleep to create a delay in out typewriter so that notepad opens up and out typewriter doesn't type anywhere else

Thread.sleep(2000);

Then we will use the Robot Class to create the typewriter effect

r.keyPress(KeyEvent.VK_H);

The line above display the letter H on the notepad .Like this we can print any letter to form words and sentences.

We can then use Thread.sleep to have a pause and create a natural typing effect

Thread.sleep(500); // 0.5 seconds

Thread.sleep() takes argument in milliseconds

Using this you can display multiple letters in the notepad

import java.awt.*;
import java.awt.event.KeyEvent;
import java.io.IOException;

public class notepadType{
public static void main (String[]args) throws IOException, InterruptedException, AWTException{
Runtime.getRuntime().exec("notepad.exe");

Thread.sleep(2000); // 2 seconds
Robot r=new Robot();
r.keyPress(KeyEvent.VK_H);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_E);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_L);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_L);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_O);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_SPACE); // displays a whitespace
Thread.sleep(500);
r.keyPress(KeyEvent.VK_W);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_O);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_R);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_L);
Thread.sleep(500);
r.keyPress(KeyEvent.VK_D);
// hello world 
    }
}   

Footnotes:

1. Key Event Class
2. java.awt
3. IOException
4. Runtime Class