Why doesn't the version of Notepad that comes with Java work?

Something is wrong with the version of Notepad that comes with the j2sdk1.4.2. When I click on my desktop icon I get "Java Webstart Application Manager". I highlight "Notepad App" and continue. Notepad opens up I type in my code. Then I click on "Save" and choose my Java folder to save the file. Now at the bottom it says "Files of type... and it seems to me I should be able to save the file as type Java. But all it says is "all files." When I look in my Java folder the file is there but it just says type "file". Isn't it supposed to be saved as a "Java" file?
And I still can't invoke the compiler at the command line nor run my program. But I'm going to try it again.

A java file is a test file with a .java extension. There is nothing special about it.
If you want an editor try eclipse, this edits,compiles,runs,debugs, refactors and much more.

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