Is there any good JAVA lib for playing with WSDL's and WS-* bindings?
Is there any good JAVA lib for playing with reading from WSDL's and connecting to WS-* bindings?
Take a look at Apache Axis2 - one of the most popular java webservices framework. It has multiple Java - XML binding methods (e.g. JAXB, ADB).
For a summary: Wikipedia
In case you want play and write WSDL elements you can use Wsdl4J JSR implementation which is what even Axis uses behind the scene. This gives u a nice API to read and write WSDL elements