Vaadin Libraries

The main library for developing server-side Vaadin applications, as described in "Writing a Server-Side Web Application". It requires the vaadin-shared and the vaadin-themes libraries. You can use the pre-built vaadin-client-compiled for server-side development, unless you need add-on components or custom widgets.

A shared library for server-side and client-side development. It is always needed.

The client-side Vaadin framework, including the basic GWT API and Vaadin-specific widgets and other additions. It is required when using the vaadin-client-compiler to compile client-side modules. It is not needed if you just use the server-side framework with the pre-compiled Client-Side Engine. You should not deploy it with a web application.

The Vaadin Client Compiler is a Java-to-JavaScript compiler that allows building client-side modules, such as the Client-Side Engine (widget set) required for server-side applications. The compiler is needed, for example, for compiling add-on components to the application widget set, as described in "Using Vaadin Add-ons".

A pre-compiled Vaadin Client-Side Engine (widget set) that includes all the basic built-in widgets in Vaadin. This library is not needed if you compile the application widget set with the Vaadin Client Compiler.

Vaadin built-in themes both as SCSS source files and precompiled CSS files. The library is required both for basic use with CSS themes and for compiling custom Sass themes.

The Vaadin Sass Compiler compiles Sass themes to CSS, as described in "Syntactically Awesome Stylesheets (Sass)". It requires the vaadin-themes-7.x.x.jar library, which contains the Sass sources for the built-in themes. The library needs to be included in deployment in development mode to allow on-the-fly compilation of themes, but it is not needed in production deployment, when the themes are compiled before deployment.