How to use a Java Request sampler?

[prasanna bhat]

Hi,

The Java Request is not as straight forward as any other sampler. I have a
few question related to this:

 1) when do we have to use it ?
2) how to use a Java Request sampler?
3) what are the adavantages of using it?

It will be great if some one can answer these questions with some kind of
illustration.

Thanks,
Prasanna