I really liked your book and plan to use it when I need to teach people how to code, so thanks a ton.

> Fixing Mechanical issues

I tried running `*.java` files without classes (so just `void main`) and I got this error:

```

Hello.java:1: error: class, interface, or enum expected

void main() {

^

```

> Be a template

It's a great one.

Thank you!