how to store value from servlet to java script variable

i have created a one java script file in that i have written a html code in boilerplate variable and ajax to call servlet .
in java servlet i have written a code for select query as to select data from database table and store tihs value in resultset
i want to store this resultset value in to javascript variable.
how i store it ???
eg:-suppose i have table with firstname and Lastname fields and if i retrive this column in java servlet then i want this two column value to save/store in a java script variable on java script file
like var fname=???
var lname=???

Well, first of all you shouldn't be emitting output in the servlet. You should be forwarding to a JSP to create the view.

But regardless, the answer is the same. You simply write the JavaScript markup to the response.