Okay, in this tutorials i will use netbeans. First, you have to make sure that you have installed the J2SE (http://www.java.sun.com/products/). Next, download the netbeans (http://www.netbeans.org) then install it. After succesfully installed it, select File -> New Project ...
Next, a window will come up
For this time, we will choose "Java" at the categories, and "Java Application" at the projects, and click Next.
Now, you will face a several lines of shit (i mean codes)
Add One jcode, Hmmmm Maybe Dos Attacker?
http://i47.tinypic.com/21nqo0n.jpg[/img]
And now lets preview it...