modulename cannot contains hyphen "-" in WebAppCreator?!!

[tong123123]

WebAppCreator -maven -out test2 abc.com.a-1
return error
'abc.com.a-1' does not appear to be a valid fully-qualified java class name.

in fact, I can success copy a gwt application to maven project, but the problem is now we need the artifactid id(and so the folder name) has hyphen "-"!!
in WebAppCreator -maven-out test2 {moduleName}
the moduleName is in fact groupId + artifactid

I try to use other moduleName in WebAppCreator and then use refactor in eclipse to modify the moduleName to have "hyphen", but when build, error

--gwt-maven-plugin:2.4.0:compile (default) @ a-1
auto discovered modules [abc.com.a-1]
[ERROR] "Invalid module name: 'abc.com.a-1'

[Thomas Broyer]

Yes, the module name simply cannot contain hyphens; it must be a valid Java identifier. I don't know the reason behind that choice, but that's how it works. 

Your artifactId can contain hyphens though; there's no relationship between your groupId / artifactId and your module name.