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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

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Having problems getting started

Posted by rlh145 (rlh145), 28 March 2003
I am teaching myself java and having trouble compiling one of my programs.

I have written two java classes (programs) in the same directory. One is named ErrorMsg and the other one is HelloWorld.  HelloWorld makes an attempt to create an object of the type ErrorMsg like so:

ErrorMsg myErrorMsg = new ErrorMsg ()

When I compile this program from my machine (Windows 9 at home, I get an error 'can't resolve symbol and it points to ErrorMsg. When I run it at work (Windows 2000), it runs with no problem. I have not changed the programs.

Could someone tell me what may be causing the problem? I suspect it has something to do with the way my machine at home has been configured, but not sure.

If more information is needed, please let me know and I will post more.

Thanks!
Ralph

Posted by admin (Graham Ellis), 29 March 2003
I'm inclined to think that your CLASSPATH may not be set up to include . (current directory) on your home machine - first guess anyway.  I presume it compiles ErrorMsg correctly and generates a class file?  I also presume that you;ve FTP'd or otherwise transferred the file, so there isn't a typing error in the source on your home machine?   These are things I would be on the lookout for.



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