java.lang.NoClassDefFoundError

[Former Member]

Hi Everyone,

I've just started getting this error after upgrading to NWDS sp12. I have a series of Interactive Forms projects that were happily working, and now none will start! They all build ok.....

The error I get is:

java.lang.NoClassDefFoundError: com/sap/tc/webdynpro/progmodel/api/IWDEventHandlerId

at java.lang.Class.getDeclaredConstructors0(Native Method)

at java.lang.Class.privateGetDeclaredConstructors(Class.java:1618)

at java.lang.Class.getConstructors(Class.java:865)

Anyone got any ideas as to why this would start happening?!

Thanks

Andy

[Former Member · Accepted solution]

Hi Andy,

You have upgraded your NWDS to SP12. But i think you didn't upgrade your WAS server. So, as you are deploying your application from higher version of NWDS to lower version of WAS server, it definitely gives such error.

You also have to upgrade your WAS server.

Regards,

Bhavik

[RichHeilman · Accepted solution]

I have had the same problem in the past. As a rule of thumb, you must always have the WAS and NWDS at the same SP level. Untill they tell us otherwise.

Regards,

Rich Heilman

[Former Member · Accepted solution]

thanks guys - I hadn't picked this up from the documentation - problem solved!

[Former Member · Accepted solution]

Hi i am also facing the same issue. Please explain us what you did for this.

Regards,

Suman