Cache in Java

Hi ,
I am working in a struts application.  I have a jsp with select button and  form fields like ename , empno, deptno etc.  my question is  I would like to store these values in a cache  when i click on select  and when i modify the values on the jsp the chache should be modified. can u explain me with a sample java program.

Thanks in Adv
samk4Asked:
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ManishConnect With a Mentor LeadCommented:
I think in one class you can create static HashMap and use it as cache.
You have to more careful that value should get removed from cache otherwise it will become more big and you may get outofmemory exception on day.
http://www.javaworld.com/javaworld/jw-07-2001/jw-0720-cache.html?page=2
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