GWT JDBC how can i do?

Question

Hi, i am learning gwt and i'm getting troubles trying to do a query No source code is available for type [package.Class]; did you forget to inherit a required module?

i dont understand very well how works a module

do i have to write a module for each class?

i just wanna call a class to insert data

Thanks for advance

Answer 1

GWT is ultimately compiled into Javascript. It's not possible to make a direct JDBC connection from Javascript. Therefore, to make a database connection, you'll have to communicate with a server.