This composition example contains classes Date, Employee and EmployeeTest .Class Date declares instance variables month, day and year to represent a date. The constructor receives three int parameters. It has method checkMonth to validate the month—if the value is out-of-range the method throws an error message. same goes for year and day. Provide getters, setters and toString method.Class Employee has instance variables firstName, lastName, birthDate and hireDate.Members firstName and lastName are references to String objects. Members birthDate and hireDate are references to Date objects. This demonstrates that a class can have as instance variables references to objects of other classes.The Employee constructor takes four parameters—first, last, dateOfBirth and dateOfHire. The objects referenced by the parameters are assigned to the Employee object’s instance variables.When class Employee’s toString method is called, it returns a String containing the employee’s name and the String representations of the two Date objects. Each of these Strings is obtained with an implicit call to the Date class’s toString method.Class EmployeeTest creates two Date objects to represent an Employee’s birthday and hire date, respectively. Then creates an Employee object and initializes its instance variables by passing to the constructor two Strings (representing the Employee’s first and last names) and two Date objects (representing the birthday and hire date). Then display the values of its instance variables and demonstrate that the object was initialized properly.In Java

public class EmployeeTest{ public static void main(String[] args) { Date d1=new…

Answered: Class EmployeeTest creates two Date…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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This composition example contains classes Date, Employee and EmployeeTest .Class Date declares instance variables month, day and year to represent a date. The constructor receives three int parameters. It has method checkMonth to validate the month—if the value is out-of-range the method throws an error message. same goes for year and day. Provide getters, setters and toString method.

Class Employee has instance variables firstName, lastName, birthDate and hireDate.Members firstName and lastName are references to String objects. Members birthDate and hireDate are references to Date objects. This demonstrates that a class can have as instance variables references to objects of other classes.

The Employee constructor takes four parameters—first, last, dateOfBirth and dateOfHire. The objects referenced by the parameters are assigned to the Employee object’s instance variables.
When class Employee’s toString method is called, it returns a String containing the employee’s name and the String representations of the two Date objects. Each of these Strings is obtained with an implicit call to the Date class’s toString method.

Class EmployeeTest creates two Date objects to represent an Employee’s birthday and hire date, respectively. Then creates an Employee object and initializes its instance variables by passing to the constructor two Strings (representing the Employee’s first and last names) and two Date objects (representing the birthday and hire date). Then display the values of its instance variables and demonstrate that the object was initialized properly.

In Java

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