JAX-WS 2.0 Generates up to 85% less code than JAX-RPC 1.1
To highlight the savings in generated code with JAX-WS 2.0 compared to JAX-RPC 1.1, I ran the WS-I Sample application WSDL files through JAX-RPC's wscompile and JAX-WS's wsimport. The results are very good.
JAX-RPC 1.1 generated 128 files that were 365KB in size.
JAX-WS 2.0 generated only 61 files for a total size of 83KB. That is a 52% reduction in the number of files generated and a 77% reduction in the size of the generated files.
You can download the early access 2 of JAX-WS 2.0 here.
You can read the online documentation here.