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I am also engaged in a community college class on Java. Hopefully this will give the knowledge to write evil applets that do all kinds of fun things in your browser. As always I will share what I learn and know.
Did you know you can get all kinds of free tools to do Java programming? You should start by taking a look at the Sun Microsystems web page. They are the inventors of the language. And they provide a free development kit to compile and run Java programs. You can also download a free copy of the NetBeans integrated development environment.
I am an old school hacker. So I like writing my code in a text editor. Or better yet I use an IDE from Microsoft which does not do Java. That way I don't rely on the tool. I rely on my own knowledge to write the code from scratch. That is, I do this until I truly learn the language. After that I will get down with a free Java IDE like Eclipse. More on that later.