An EJB Handle is a serializable reference to an EJB. You can write the handle to a disk, go for coffee, read the handle from disk, ask for the EJB reference, and invoke methods on the EJB. No lookup hassle.
I believe the handle here means copying the original object to another new object and play with this new object , so that it wont effect the original object..correct me if i m wrong..
Not quite. The handle can be used to create multiple references to the EJB, but it's still one and the same. The only thing you have copied is the reference. Any changes through the second reference will affect the state experienced through the first reference.