I have 4 dropdowns,in which i am populating the city names.For ex: Delhi,Mumbai,Bangalore.
Suppose if i select Delhi in first dropdown,it should not displayed in rest of 3 drop downs.How i have to solve this in jsp.
JSP will be of no help. This is something that must be accomplished with JavaScript. Unless, of course, you want to refresh the entire page page every time someone makes a choice (hint: you do not want to do that).