Java Help:

Question 1- In Question1 folder, the EmployeeDemo.java class creates instances of the PartTimeEmployee.java and FullTimeEmployee.java classes and prints them. Try the code to see that it runs fine; however, the PartTimeEmployee.java and FullTimeEmployee.java classes have a lot of duplicate code. A: Use Inheritance to reduce code duplication. 1- For this purpose, create a third class called Employee.java, which will contain the code that is in common between PartTimeEmployee.java and FullTimeEmployee.java classes. 2- Modify PartTimeEmployee.java and FullTimeEmployee.java classes, accordingly. 3- Use the concept of abstract classes where it can be applied. 4- Make sure that the Empolyee.java class also has a toString() method and reuse it in the modified PartTimeEmployee.java and FullTimeEmployee.java classes. 5- You should not change the EmployeeDemo.java class to run your modified code.

B: Write a new main method in a class called EmployeeDemo2.java as follows: 1- Create two Employee variables called empPT and empFT. Assign empPT an instance of a PartTimeEmployee and assign empFT to an instance of a FullTimeEmployee objects that you created in part A. 2- Print the both empPT and empFT variables.. 3- Specify whether the toString() method of the Employee class is called or the toString() methods of the PartTimeEmployee and FullTimeEmployee classes are called. 4- Explain why the above has happened and in Object Oriented paradigm, what is it called? 5- Call empPT.getHours() in EmployeeDemo2.java. a. What is the result? Explain why. b. If there is an error, how can you change empPT to fix the error?

//EmployeeDemo.java

public class EmployeeDemo{

public static void main(String[] args){ PartTimeEmployee pe1 = new PartTimeEmployee("John", "Driver", 25.0); FullTimeEmployee fe1 = new FullTimeEmployee("Maggie", "Lab Manager", 8000.0); pe1.setHours(40); System.out.println(pe1); System.out.println(fe1); }

}

//FullTImeEmployee

public class FullTimeEmployee{

private String name; private String title; private double salary; public FullTimeEmployee(String n, String t, double s){ name = n; title = t; salary = s; } public String getName(){ return name; } public String getTitle(){ return title; } public double getSalary(){ return salary; } public String toString(){ return " Full-time Employee: " + "Name: " + name + " Title: " + title + " Salary: " + salary; }

}

//PartTimeEmployee

public class PartTimeEmployee{

private String name; private String title; private double rate; private int hours; public PartTimeEmployee(String n, String t, double r){ name = n; title = t; rate = r; hours = 0; } public String getName(){ return name; } public String getTitle(){ return title; } public void setHours(int h){ hours = h; } public int getHours(){ return hours; } public double getSalary(){ return hours * rate; } public String toString(){ return " Part-time Employee: " + "Name: " + name + " Title: " + title + " Salary: " + getSalary(); }

}