Cannot get Java to compile

I have recently installed the newest Java version on my XP computer. I can't get it to compile the programs
I have written. I have it saved in C:/Program Files/java_save. When I go to compile I get "javac is not a recognized action or file name." I have tried creating the path in the system settings but I still cannot get it to work. I have tried just about everything I can think of. I am getting really frustrated and haven't gotten an answer from java when I emailed them. Do I need to reinstall java or am I doing something wrong? Any help would be appreciated. Thank You!
trtrainer

'Software\JavaSoft\Jave Runtime
Environment\CurrentVersion' has value '1.4' but '13'
is required.
Error: could not find java.dll
Error: could not find Java 2 Runtime EnvironmentA fast review of the threads on this topic lead me to believe you may need to either 1) add the new bin directory to the path variable as mentioned earlier 2) reinstall the JRE only, due to confusion at the registry level 3) edit/repair the registry itself (careful...)
Note also the order of the items in the PATH setting. As discussed here in Reply 1..
http://forum.java.sun.com/thread.jsp?forum=54&thread=164483
You may wish to remove from the PATH setting any earlier versions of a java sdk you had attempted to install.
Here are some other threads on this topic..
http://forum.java.sun.com/thread.jsp?forum=32&thread=142506
http://forum.java.sun.com/thread.jsp?forum=31&thread=276400
Reply 1 of this thread suggests reinstalling Java and the response from the OP is that the reinstall resolved the issue.
http://forum.java.sun.com/thread.jsp?forum=54&thread=299702
If you installed an IDE with it's own JDK, you may want to look at Reply 2 here..
http://forum.java.sun.com/thread.jsp?forum=54&thread=183721
When I type the path: c:\j2sdk1.4.2_04\bin\javac
HelloWorldApp.java, I get: Error: Cannot Read:
HelloWorldApp.javaThis simply means that the compiler can not find the file "HelloWorldApp.java" inside the directory from where you are attempting to compile the file.

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