Hello.java

/* Hello.java */
public class Hello
{
    public static void main(String[] args)
    {
        System.out.println("Hello World");
    }
}

/* Hello2.java */
public class Hello2
{
    static
    {
        System.out.println("Hello World");
    }
}

/* Hello3.java */
public class Hello3
{
   static 
   {
       System.out.println("Hello World");
       System.exit(0);
   }
}