Implementing Assertions for Java

By Jeffery E. Payne, Michael A. Schatz, and Matthew N. Schmid

Dr. Dobb's Journal January 1998

 . . .
Coordinate x, old_x ; 
x = new Location() ;
x.setValue(5);
old_x = x ;
x.setValue(10) ;
 . . .

Example 1: In C++, old_x has the value 10; in Java, 5. (Coordinate is a user-defined type.)

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