Lecture 4
14
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•x = y    means                                                           “make the value of x the value of y !”
•Example (primitive types)
–int y = 6; // declare y, initialize value
–int x;     // declare x
–x = y; // copy content of box y into box x
•For reference types, x = y means arrow in x now points to the same place as arrow in y.
•x = y   is not the same as y = x                   
•This makes mathematicians unhappy