Java for Cygwin

[Randall R Schulz]

Istvan,

I do a great deal of Java work under Cygwin with no trouble.

[ As with so many other kinds of programming, Cygwin is the only way to 
make Windows genuinely useful and tolerable to an old Unix hand such as me. ]


Java is not really special, either on Windows generally or in relation to 
Cygwin. It is a strictly Windows application and does not understand a 
Unix- or POSIX-style CLASSPATH, for example. Neither does it tolerate 
absolute POSIX file names, though relative paths will work because of their 
conincidental syntactic similarity. I advise use of forward slashes 
everywhere to avoid the problems of the back-slash in the POSIX environment.

I use cover scripts that process arguments from their Unix / POSIX form 
into the requisite Windows form required by the Java tools. That way the 
other development scripts I write are equally applicable in both a Unix and 
a Cygwin environment.

I'd be willing to share these with you, but my sense has been that there's 
little use of or interest in Java among the readers of this list, so unless 
at least a few people contradict this assertion, I ask you to solicit these 
from me directly.

If you just want help with your NoClassDefFoundError, you'll need to say 
more about what you're doing and how. Specify the CLASSPATH environment or 
"-cp / -classpath" option and the invocation of "java" that you used. If 
you're a beginner, there are some "classic" errors like confusion about the 
interaction of Java "package" declarations, the class path and the layout 
of your class (and possibly source code) files in the file system.

Again, unless others on the list expresses interest, I suggest you follow 
up with me privately.


Randall Schulz
Mountain View, CA USA



At 10:20 2002-06-21, Istvan Kurucz (ETH) wrote:
>Hi,
>
>I've been using Cygwin for a long time but I'm not able to run Java 
>applications. I always got error message "Exception in thread "main" 
>java.lang.NoClassDefFoundError:". It's seems to me there is no path for 
>Java JNI.
>
>Can someone help me?
>
>BR/Istvan,


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