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Can any body tell me why this warning message and how to remove it or solve it in eclips
warning mesage : Classpath entry VAADIN_DOWNLOAD/gwt-dependencies/2.3.0/validation-api-1.0.0.GA-sources.jar will not be exported or published. Runtime ClassNotFoundExceptions may result.
Advance thanks
As GWT is a pure compile-time-dependency (and this is also only true if you are developing your own widgets), it is safe to ignore this warning. A complete deactivation of this warning in Eclipse is on the other hand not recommendable, as you might overlook something important if you do (I never had problems with ClassNotFoundException due to an unexported classpath-entry, but who knows what there is still to come ;)).
If you do not develop own widgets, you could remove those JARs from the classpath entirely and therefore get rid of these warnings. Or you follow my advice and just ignore them.