Problem in setting CLASSPATH and PATH

I am a newbie in java. I downloaded and run the "j2eesdk-1_4_01-windows.exe" from Internet. By default, it creates a new user variable, which is "PATH = C:\Sun\AppServer\bin". My problem is when I try to compile a java, I get an error message, which is
'javac' is not recognized as an internal or external command,
operable program or batch file.
I create a new user variable which is "CLASSPATH = .;C:\Sun\AppServer\jdk\bin"
and add new variable into my system variable, which is
"PATH = %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Sun\AppServer\jdk\lib"
However, it doesn't work and give the same error message. Any idea about the solution?
Thanks in advanced.

Your PATH variable needs to include the path to the J2SE SDK bin directory. It looks like you added it to your CLASSPATH instead

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Your PATH is exactly what it should be.
The CLASSPATH answer depends on where you're compiling and running.
If you're doing things on the command line, I think the right answer is to use the -classpath option on javac.exe and java.exe.
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[email protected]

I must confess that I am totally unable to understand what your PATH is set to. The error that you see,
<'javac' is not recognized as an internal or external command,operable program or batch file.>
is due to a missing or incorrectly set PATH. It is used by Windows to find executable file (like javac.exe) that you have added to the computer. Item #5 on this page gives you instructions on how to set it: http://java.sun.com/j2se/1.4.2/install-windows.html
As for the setting of the CLASSPATH, you seem to have a number of different versions of java (1.4.2_02, 1.4.2_01, 1.4.2_2, and 1.1.8) and I doubt that these are all valid. You are also using an unusual syntax C:\java_home\jdk1.4.2_2\bin\javadoc Fruit.java and I wonder if that is really C:\java_home\jdk1.4.2_2\bin\javadoc\Fruit.java? I think the best action is to point you to Sun's instructions and information about setting and using the CLASSPATH.
The CLASSPATH is a set of pointers that is used by Java to find the files that YOU (not Java) create and want compiled and/or run.
Setting the Classpath:
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/classpath.html
[NOTE: always start your classpath with ".;" which means the current directory. See my classpath, below]
How Classes are Found:
http://java.sun.com/j2se/1.4.2/docs/tooldocs/findingclasses.html
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Javapedia: Classpath
How Classes are Found
Setting the class path (Windows)
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