PATH VARIABLES AND RUNNING CLASS FILES

People:
I'm a complete Java neophyte and (slowly) learning. Rather than using the NetBeans IDE I have installed, I'm taking the text editor approach to type my source code.
After I type code into my text editor, does it necessarily matter where I save my text files? For my first application, I created HelloWorldApp.java in Notepad, originally saving the file to the same folder where my J2SE 5.0 installation is stored, which is:
C:\Program Files\Java
My javac (Java compiler) is located in:
C:\Program Files\Java\jdk1.5.0_01\bin
When I was first trying to compile HelloWorldApp.java, I received errors saying the Java compiler couldn't be found; I was told to create a path environment variable so the javac could be found to compile my code. When I went to the control panel to set an appropriate path variable, I deleted a (wacky!) Roxio path (don't even know how that got there), entering in its place:
C:\Program Files\Java
as the new path name, although, again, my Java compiler is located in
C:\Program Files\Java\jdk1.5.0_01\bin
After restarting my computer to implement the new path variable into the operating system, I tried compiling my program, but still got error messages. However, when I moved my HelloWorldApp.java text file from the location where I originally saved it, which was:
C:\Program Files\Java
to
C:\Program Files\Java\jdk1.5.0_01\bin
my HelloWorldApp.java finally compiled to a class file, which I finally ran! Did my program run because I moved the HelloWorldApp text file from C:\Program Files\Java into the C:\Program Files\Java\jdk1.5.0_01\bin folder where the javac is located?
Or did my C:\Program Files\Java path variable allow for the Java compiler to be found, although it's located in C:\Program Files\Java\jdk1.5.0_01\bin ? (This is why I asked above if it matters where you save your text document source code.)
In using a text editor to type source code, where should I save my Java text files next time?
Any help would be much appreciated! Thanks!

Add the following directories to the PATH variable.
C:\Program Files\Java\jdk1.5.0_01\bin
I agree with this part.
and add the following to the CLASSPATH variable
C:\Program Files\Java\jdk1.5.0_01\lib;C:\Program
Files\Java\jdk1.5.0_01\jre\lib;.
Where is this insanity coming from?
You do not need to set your classpath unless you are using a third party library or you have different parts of your program stored under different paths.
OP: You can store your source files anywhere you want to. You should put them somewhere that is easy for you to access. Most people have a common directory for all of their projects, with subdirectories for each project.
The only real restriction on where you put your source files is that the directory struction they are in must match the package statement at the top of the source file.
So, if your file has:
package chat.client.events;
at the top, then the source file must be in a directory named chat/client/events relative to where you keep your source files.

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PATH VARIABLES AND RUNNING CLASS FILES

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