How to access objects without using "." operator

Hello  All,

 

May I know the steps to access the objects owned by other user without using “.” Operator for example

I have two users “TESTUSER” and “USERACCESS”  the TESTUSER owns tables EMP,DEPT..

is there a way to “USERACCESS” can access the EMP/DEPT tables without using the ” .” like  select * from emp; (not as select * from TESTUSER.EMP);

Thanks

Sankar