PPT Slide
= and == with objects and references.
Parameter passing, call by value, call by constant reference.
Java has no pointers, only references.
Null is a special value that means "no object" or "absenceof reference”.
All objects and arrays (i.e., everyting except primitivetypes) are handled by reference
= assigns references to objects
(use clone() to copy theobject itself).
== and != test references with references
(use equals() totest the objects themselves).
Objects vs. References: Summary