Java programming assignment: A student is a person, and so is an employee. Creat

Question

Java programming assignment:

A student is a person, and so is an employee. Create a class Person that has the data attributes common to both students and employees (names, social security number, age, gender, address, and telephone number) and appropriate method definitions. A student has a grade-point average (GPA), major, and year of graduation. An employee has a department, job title, and year of hire. In addition, there are hourly employees (hourly rate, hours worked, and union dues) and salaried employees (annual salary). Define a class hierarcy and write an application class that you can use to first store the data for an array of people and then display that information in a meaninful way.

The task asks you to write an application class for storing the data (array of people) and displaying that info. Write a test program that uses all those features and, additionally, allows for entering additional data by the user. You can either:

a. follow the textbook’s requirements for an application class, and then have a testprogram to invoke it and, additionally, provide a data entry facility OR

b. add data entry functionality to the application class mentioned in your textbook.

After you create a class Person, write a test program demonstrating how it is used. Upon launching, the program should store a few records of different kind and then allow for entering additional data by the user.

Explanation / Answer

import java.util.*;
import java.io.*;

class person{
   String name;
   String soc_num;
   int age;
   String gender;
   String address;
   String tel_num;
   public person(String n,String s,int a,String g,String add,String tel){
       name = n;
       soc_num = s;
       age = a;
       gender = g;
       address = add;
       tel_num = tel;
   }
   void set_name(String n){
       name = n;
   }
   String get_name(){
       return name;
   }
   void set_soc_num(String s){
       soc_num = s;
   }
   String set_soc_num(){
       return soc_num;
   }
   void set_age(int a){
       age = a;
   }
   int get_age(){
       return age;
   }
   void set_gender(String g){
       gender = g;
   }
   String get_gender(){
       return gender;
   }
   void set_Address(String a){
       address = a;
   }
   String get_address(){
       return address;
   }
   void set_tel(String t){
       tel_num = t;
   }
   String get_tel(){
       return tel_num;
   }
}

class student extends person{
   // Grade pointer
   double cgpa;
   // Major
   String major;
   // Year of graduation
   int year;
   public student(String n,String s,int a,String g,String add,String tel,double cg,String maj,int yr){
       super(n,s,a,g,add,tel);
       cgpa = cg;
       major = maj;
       year = yr;
   }
}

class employee extends person{
   String department;
   String job_title;
   int year_hire;
   public employee(String n,String s,int a,String g,String add,String tel,String dep,String title,int yr){
       super(n,s,a,g,add,tel);
       department = dep;
       job_title = title;
       year_hire = yr;
   }
}

/* Name of the class has to be "Main" only if the class is public. */
class Ideone{
   public static void main (String[] args) throws java.lang.Exception{
       person[] p = new person[2];
       p[0] = new student("A","12",12,"Male","CICR SIRSA INDIA","9782",6.3,"Computer Science",2012);
       p[1] = new employee("A","12",12,"Male","CICR SIRSA INDIA","9782","HealthCare","Scientist",1982);
   }
}

Check http://ideone.com/j5DA3O for output

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