2.7. Understanding modules vs. packages
Every GWT application/project will contain Java packages and GWT modules. You’re probably fairly familiar with Java packages; they’re a way of encapsulating related Java classes and/or functionality together under a single namespace.
Definition
Java package—Encapsulates related Java classes and functionality under a single namespace. They’re useful, among other reasons, for the separation of logical units of code.
The application you’ll create shortly will have a package called com.manning.gwtia.ch02.client, with a single Java class file.
GWT overlays a parallel module structure in the source code, which is invisible and inconsequential to the Java compiler but is visible and important to ...
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