What is the context? Where have you heard of this class? How do you know it exists?
A quick google search finds it as part of the Apache Messenger API, but that project is dormant, so you would have to download the code and build it yourself.
It also appears it is part of Tomcat, JTidy, and several other JEE implementations as part of their internal API. It seems likely that if you have a Servlet container than you have a 'BufferedServletOutputStream' somewhere.
Still trying to solve that same problem, eh?
If so, my answer is still the same: You have two choices: make the VM heap larger or load less data into memory. Even if you make the heap larger, you will eventually run into the physical limit of the machine you are running on.
I am talkng about the same problem but a bit different one.Problem here is with the export.But ,as the problem is going in different directions ,and as per my view,questions related to IO should be in that topic,I had to raise like this.
Increasing the size of the memory is not the solution I would prefer for my application.
And reducing the heap object usage,I had done it as far as possible.