how save,update,delete functionality of dhtmlxgrid works.

can anyone help to send a proper example how to use save,update,delete functionality of dhtmlxgrid for java.it will be helpful for me…plz.

Grab
dhtmlx.com/x/download/regula … r_java.zip
it contains a sample of CRUD for dhtmlxGrid with java backend.

it does not help…please send me something more which will be useful for me.actually my company is going to buy this product but until we know how it works we can’t take any risk.
i’m new to this and not getting it by this sample code.currently i’m working with spring 2.5 web mvc and i want to know when it calls to mygrid.save which class it first calls.and how it makes connection with database.plz…