[News.eclipse.technology.cme] Re: solution ClassNotFoundException com.su

[ossher@xxxxxxxxxx (Harold Ossher)]

Len,

Thanks for pursuing and reporting this. I have improved the error message
along the lines you suggest (in the CVS repository - it will appear on the
update site the next time that is refreshed).

Thanks, Harold

len wrote:

> If you try to compose a concern and got the following error 
> "java.lang.ClassNotFoundException: com.sun.tools.javac.Main
> Internal error: compilation of generated construction classes failed."
> like I did, here is the solution:

> The problem was that the cme was looking for the sdk directory in the
> wrong place. After installing jsdk 1.4.2 under windows using the default
> options,
> it created the folowing 2 directories on my computer: 
> c:/j2sdk1.4.2_0 and
> c:/program files/java/j2re1.4.2_0
> Eclipse 2.1 uses the runtime java from the directory c:/program
> files/java/j2re1.4.2_0 instead of c:/j2sdk1.4.2_0/jre which gives an error
> when trying to compose a concern when searching for the compile method in
> the sdk using a relative path.

> The solution is to change the path for the runtime java in the eclipse
> preferences window to c:/j2sdk1.4.2_0/jre. Btw, a clearer error would have
> saved me a lot of searching (a try catch around ClassLoader.loadClass
> in org.eclipse.cme.util.env.DefaultJavaCompiler)