Hello..how to set classpath....and for environment variables

hello...
i have 2 classes...one.java and Two.java....
In two.java i extends One.java...
Two.java is not compiling....
if I place those 2 files in j2sdk1.4.1/bin folder ..then its compiling successfully.....please help me to solve this..

Perhaps you mean that the java compiler cannot be found in any other directory but the bin directory. You need to add the bin directory to the PATH environmental variable to be able to compile classes anywhere in a command prompt/shell. If you are using windows, you'll find the environmental variables by:
1) right clicking my computer and choosing properties
2) click advanced
3) click environmental variables
Check here for more information about common setup problems:
http://java.sun.com/docs/books/tutorial/getStarted/problems/index.html

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