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RE: [aspectj-users] ask for compiling examples - sorry if duplicated

Are you sure that the rt.jar reference in your build path is valid?  The error you mentioned originally means that the classloader doesn't have access to a class that is in that jar.  As far as using your system classpath (%classpath%), I wouldn't recommend doing it as you will sacrifice portability to another machine since other machines won't have the same system classpath (and when you start putting all jars in your system classpath you end up over time with a huge classpath that becomes very difficult to debug when you do get classNotFoundExceptions).  I try to create my classpaths either in a batch file or in my ant build script.  As far as the . that you are adding when using command line, I believe that is done automatically by eclipse when you specify a build directory for the project. 
Look in your properties for the project again, and get the absolute path to rt.jar from the build path (should be %JAVA_HOME%\jre\lib\rt.jar).  Then open that file using winzip and go to the object class in the java.lang package.  If it's there, then something is really wrong because eclipse should certainly be able to find it.  If you really want to add your system classpath to the project, you can use the build-path in Eclipse and click on the add variable button.  Hope this helps. 
-----Original Message-----
From: aspectj-users-admin@xxxxxxxxxxx [mailto:aspectj-users-admin@xxxxxxxxxxx]On Behalf Of Ha Nguyen
Sent: Thursday, January 23, 2003 4:12 PM
To: aspectj-users@xxxxxxxxxxx
Subject: Re: [aspectj-users] ask for compiling examples - sorry if duplicated

I tried all solutions you all suggest but it still cannot work.
I also have the same problem when compiling at command line:
"Exception in thread "main" java.lang.NoClassDefFoundError..."
Then, I type set classpath %classpath%;.;               (add "."). It works.
But I don't know how to do something like that on Eclipse. I even set classpath environment variable for my Windows with the "." but it doesn't work.
Any other suggestions ?
----- Original Message -----
Sent: Thursday, January 23, 2003 10:10 PM
Subject: Re: [aspectj-users] ask for compiling examples - sorry if duplicated

I had similar problems just 2 weeks ago.
There may be two things to check or to do:
1. check if your java-classpath is correct,
2. your AspectJ-project needs absolute paths (NOT relative paths) in the
Hope that may help,

Ha Nguyen wrote:
> Thanks. I can open the example package now. However, I have another
> problem. I use Eclipse 2.0.2 with aspectj 1.0.6. I create a new aspectj
> project and add 2 files in the introduction package ( and
> to test my first aspectj project. I already added
> the aspectjrt.jar to the lib and made configurations as instructed.
> Unfortunately, it cannot run. This is the compiler error:
> ------------------------------------------------------------------------
> Error occurred during initialization of VM
> java/lang/NoClassDefFoundError: java/lang/Object
> ------------------------------------------------------------------------
> For the reason that I am completely new to aspectj and eclipse, it's
> really difficult for me to find out the problem. Anybody has experienced
> this problem, please help me.
> MHoang.
>     ----- Original Message -----
>     *From:* hilsdale@xxxxxxxx <mailto:hilsdale@xxxxxxxx>
>     *To:* aspectj-users@xxxxxxxxxxx <mailto:aspectj-users@xxxxxxxxxxx>
>     *Sent:* Thursday, January 23, 2003 5:50 PM
>     *Subject:* RE: [aspectj-users] ask for compiling examples - sorry if
>     duplicated
>     Hello,
>     Two things:
>     1) If you're using AspectJ 1.1beta to do your exploration, don't
>     worry about the example and docs package, since all the examples and
>     docs are included in the one download.
>     2) If you're using AspectJ 1.0.6, then I've found that winzip
>     ( handles .tar.gz files well.
>     -erik
>     -----Original Message-----
>     From: Ha Nguyen [mailto:d.h.nguyen@xxxxxxxxxxxxxx]
>     Sent: Wednesday, 22 January, 2003 6:21 pm
>     To: aspectj-users@xxxxxxxxxxx <mailto:aspectj-users@xxxxxxxxxxx>
>     Subject: [aspectj-users] ask for compiling examples - sorry if
>     duplicated
>     I am beginning to learn how to work with AspectJ. I want to try to
>     compile some examples as described in the online Documentation but I
>     cannot open the example and doc package (the tar file). Does it work
>     on WindowsXP or do I have to work with it on a Unix-base system ?
>     Please help me out. Thank you.
>     MHoang
>     _______________________________________________
>     aspectj-users mailing list
>     aspectj-users@xxxxxxxxxxx <mailto:aspectj-users@xxxxxxxxxxx>

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