Java_home, classpath and swing clases

hello,
what is the difference between the classpath and java_home enviroment variables
ref:
http://java.sun.com/j2se/1.4.1/docs/tooldocs/windows/jdkfiles.html
also, are the swing classes in the src.zip folder used at compile time when build a swing-based gui ?

The Classpath is used by the javac.exe and java.exe programs to find classes. If there is no system Classpath, you get a default Classpath of . (the current directory) I don't use java_home so I can't much speak to that. It might be required for some operating systems, but I have only seen it used as a convenience - instead of typing in c:\j2sdk1.4_01\ you just type %JAVA_HOME%
The src.zip is the source code for the standard java classes. These are not used at compile time. The swing classes are in dt.jar I think.

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Java_home, classpath and swing clases

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