Returns the object bound to the given name in the session's
application layer data. Returns null if there is no such binding.
<p>
For security reasons, the same named values may not be
visible across different access control contexts.
@param name the name of the binding to find.
@return the value bound to that name, or null if the binding does
not exist.
@throws IllegalArgumentException if the argument is null.
Returns the object bound to the given name in the session's application layer data. Returns null if there is no such binding. <p> For security reasons, the same named values may not be visible across different access control contexts.
@param name the name of the binding to find. @return the value bound to that name, or null if the binding does not exist. @throws IllegalArgumentException if the argument is null.