Chapter 9, Problem 78E

Explanation of Solution

Difference between class definition in design phase and implementation phase:

Class definition in design phase	Class definition in implementation phase
A class is defined as the collection of objects with related fields and methods in a design phase.	A class is a language that contains the pattern for an object in an implementation phase.
Example: //class definition public class Test { //class variables Name a; String s; //class method definition public Show (Name name) { //statement } } Here, the class name is “Test”. The class contains two fields. They are “a”, and “s” and one method named as “Show ()”. The creation of an object for the class “Test” is given below: Test x = new Test (); Here, “x” is an object for the “Test” class and it is used to access properties of a class...