Why can't I run my java Hello World program if it is inside a package?

Question

I created a file called \"Hello.java\" that looks like this:

public class Hello {
        public static void main(String[] args) {
                System.out         


        

Answer 1

Now that it's in testpackage, its name is really testpackage.Hello. So go up a directory and do java on that.

Answer 2

Go up one directory, and run:

java testpackage.Hello

Answer 3

Try java testpackage.Hello.

Because this is in your classpath, you should be able to run that from any working directory, but refer to it by its full name.