Problem 1 Implement a superclass Person. Make two classes, Student and Instructor, that inherits  from Person. A person has a name and a year of birth. A student has a major, and an instructor has a salary. Write the class declarations, the constructors, and the methods toString & equals for all classes. Supply a test program for these classes and methods.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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INTRO JAVA

Problem 1

  • Implement a superclass Person.
  • Make two classes, Student and Instructor, that inherits  from Person.
  • A person has a name and a year of birth. A student has a major, and an instructor has a salary.
  • Write the class declarations, the constructors, and the methods toString & equals for all classes. Supply a test program for these classes and methods.

Problem 2

  • Make a class Employee with a name and salary.
  • Make a class Manager that inherits from Employee. Add an instance variable, named department, of type String. 
  • Make a class Executive inherit from Manager.
  • Implement toString and equals methods for all classes; supply a test program that tests these classes and methods

 

  •  
  • toString() method should print all the properties of the class; as Name and DOB is same for both student and instructor, you can implement it in the superclass "Person"
  • Problem 1
    • Create 3 students
      • Student1 : Name James, DOB: 01/01/2000, Major: English
      • Student2:  Name Jane, DOB: 01/20/2000, Major: Math
      • Student3: Name James, DOB: 01/01/2000, Major: English
    • Output
      • Student1.equals(Student2) : False
      • Studen1.equsts(Student3): True
      • Student1.toString() should print "Name James, DOB: 01/01/2000, Major: English"
    • Implement similar example for instructors, create 3 instructors - each instructor will have Name, Date of Birth and Salary.
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