as far as i know eclipse has a default package, and else you van create any packages you want, and then keep in there your files, with respective package declaration;
for bigger projects (with several packages and many classes) compiling and running from eclipse (or any other IDE) is ok, but to run a single file is faster doing it with command line - you dont have to create a project, and all that...
Yeah, and it doesn't like for you to use that one, either. I am just trying to get (re)used to the environment due to not being allowed to code for about 2 years, so I'm a little rusty. I have a couple of "Q&D" tools to do individual files, but this one will need to be jar'ed for a small group to have access to it, so I was trying to put them together and keep them related.