java - Importance of Shared Package in GWT -

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I realize that the GWT client does not compile classes in the package. But what is the importance of the shared package? The sections which I have to put in this package. I

Which classes do I want to put in this package?

Any arguments or data types that are used by both the client and the server will save you from the duplicate code between the two sides and possibly the reasoning and the data types Compatible .


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