GWT ERROR: No source code is available for type org.hibernate.validator.constraints.impl.SizeValidatorForString

I am trying to set up client-side validation for my GWT app by following instructions provided by the following link:

...and by looking at the validation sample provided in:

I have set up the exact same project as in the validation sample, but as a regular GWT project - not using Maven. I have hibernate-validator-4.2.0.Final.jar and slf4j-api-1.6.1.jar on both my client and server classpaths. However; I am still getting the following error at runtime:

No source code is available for type org.hibernate.validator.constraints.impl.SizeValidatorForString; did you forget to inherit a required module?
No source code is available for type org.hibernate.validator.constraints.impl.SizeValidatorForCollection; did you forget to inherit a required module?
No source code is available for type org.hibernate.validator.constraints.impl.SizeValidatorForMap; did you forget to inherit a required module?

The classes mentioned are in hibernate-validator-4.2.0.Final.jar. Therefore, I am a bit confused. Could it be that the super-source statement in Validation.gwt.xml that is hiding the classes defined in the jar?


Note the error: it isn't that the classes, but that the source is missing. Make sure you have a jar with the classes on the client classpath as well.

The super-source statement is used to define a package that contains source that should be used to provide client-equivalent functionality for some non-client package.

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