ListBox and Data Binding

I'm novice in GWT, help pls with my problem. I try to bind complex data to UI via GWT Editor mechanism. It works perfectly when binding String fields to TextBox widgets, but I cannot understand how to bind any field to ListBox widget. Look at following example, pls Bean class: public class MyDat

URLs in Jetty

I'm novice in GWT. I'd make simple application and I'm tryig to test in in dev mode using Jetty. Strange thing: when I run URL http://127.0.0.1:/Maas.html my application works properly, but when running correct URL http://127.0.0.1:/Maas.html?gwt.codesvr=127.0.0.1:9997 browser shows nothing