Compiling a Simple Program with directory structure

One source file, Hello.java, defines a class called greetings.Hello

C:> dir
greetings/
C:> dir greetings
Hello.java

package greetings;

public class Hello {
   public static void main(String[] args) {
       for (int i=0; i < args.length; i++) {
           System.out.println("Hello " + args[i]);
       }
   }
}
C:> javac greetings\Hello.java
C:> dir greetings
Hello.class   Hello.java
C:> java greetings.Hello thiyagu karthik
Hello thiyagu
Hello karthik

Compiling Multiple Source Files

C:> javac greetings\*.java