Vinay has published a nice entry about Google Web Toolkit. In few words he explains main concepts behind the wall.
- The GWT Java To Javascript Compiler
- What Does GWT Do
- The GWT AST Model
- GWT Javascript Code Generation
- How Does GWT Native Javascript (JSNI) Work
- How Does GWT Translate JDK Classes
- What are GWT widgets
- How Does the GWT RPC Mechanism Work
