Lalchand omprakash wrote: i have placed the hash map in "<% %>" scriplet along with code that will iterate over the collection.
If you have declared the map inside a set of <% ... %> tags then a new map will be created for each request and there will be no race condition between multiple requests.
"
Placed" doesn't tell me whether this is the case or not.
As David mentioned, you really need to answer the questions asked of you fully.
Until you do that, nobody is going to be able to give you any meaningful help here.