#1. Java Sample Program

Open NotePad

• From Keyboard press (windows key + R (Run as))
• and type notepad

import java.io.*;
class SampleDemo
{
public static void main(String args[]) throws IOException
{
System.out.println("Hello world....!");
}
}

• Go to File--->Save--->SampleDemo.java (make sure that where you are storing that suppose, in my case Desktop)
• Open Command prompt(From keyboard press(windows-key+R)).
• and then type as "CMD".
• From command prompt go to that location where you store the file in my case Desktop as i mentioned above.
• compile java program using the command 
• javac <file-name>.java
• javac SampleDemo.java
• Run the program using the command
• java <file-name>
• java SampleDemo