Reading
Chapter 4
Section 6

Passing and Returning Objects
- not necessary to create an object for every variable we use
- passing an object from a method
  - pass-by-value scheme used
  - when a variable is an object name, the value of the variable is a reference to an object
  - effect of passing a reference is to have two variables referring to the same object
  - reference parameters and memory
    - the object itself is not part of the memory allocated for a called method
    - the object does not get deallocated when the method terminates
- when the return type is a class, the address of an object of that class is returned
- pass-by-reference
  - definition: the address of a variable is passed as a paramter
  - synonym: call-by-reference
  - with relation to Java
    - not used
    - when passing objects
      - still copying the data in a variable and passing that
      - this data just happens to be an address