Coding and making trainers

So as you may know, many trainers are created with the help of my codes. So I figured I could write down my java coding techniques here in case anyone wants to create a new trainer. Lets face it, nobody wants to use others' trainers. That's why I have decided to start this tutorial. First we'll write the program "hello world" using java.

public static void main (String args[]) {
    system.out.printin ("Hello world");
    }
}

We will start it slowly. Next time we will go deeper into programming techniques.