Need kind of ActionListeners,keyListeners in servlet

[Kunal Lakhani]

In swing we have action listeners, key listeners. So its easy if we have many buttons, and also textfied value is dependent on other actions through keylisteners. So, how can i do something similar in servlet, jsp? Suppose there is 3 textfields. value in 2 textfield is enetered by the user and it automatically generates value for the third textfield (quite simple using keylistener in swing) or something like i enter the id number and it gets me the data(offcourse in html page) from db having that id number. How can i do it in Servlet?

[Richard Tookey]

I don't see the Servlet or JSP involved in this since they run on the server and the data entry is running on the client. I think you need to look at Javascript within HTML.

[Bear Bibeault]

All servlets and JSP do is to create the HTML page to be sent to the client. Once the page is sent to the client, they are done with their job on the server and have nothing else to do with the page.

As pointed out, you'll use JavaScript to handle events at the client.

[Kunal Lakhani]

Thanks Richard Tookey, Bear Bibeault for your reply.

I am looking forward to javascript. Someone said that smartgwt will help,as its a html,javascript generator. Is it so?? Also, Jquery can help

Which of these(javascript/JQuery,smartgwt) i must use, keeping in mind, that the web application must be completed in within 30days (i am done with analysis of requirement,db designing)?

[Nam Ha Minh]

Using pure javascript requires more effort than JQuery since JQuery is based on Javascript but it is at a higher level and comes with many cool features.
Smartgwt - I have never used it before.

[Kunal Lakhani]

Thanks Nam Ha Minh for your reply. Someone do comment on smartGwt

[Richard Tookey]

Kunal Lakhani wrote:Thanks Nam Ha Minh for your reply. Someone do comment on smartGwt

Nothing you have described seems to warrant the inclusion of a major third party Javascipt based library such as "Smart GWT" . Your requirement is standard Javascript. There are plenty of online books and tutorial that cover your requirement.

[Kunal Lakhani]

I guess smartgwt will be good for ui too. But, i have started going through javascript. Have started reading Head First Javascript