Question

 Write an application to create a super class Employee with information first name &
last name and methods getFirstName(), getLastName() derive the sub-classes
ContractEmployee and RegularEmployee with the information about department,
designation, salary & method displayFullName() , getDepartment, getDesig(),
getsalary() and to set department name , designation and salary of the corresponding
sub-class objects respectively.
 Derive sub-classes of ContractEmployee namely HourlyEmployee &
WeeklyEmployee with information number of hours & wages per hour, number of
weeks & wages per week respectively & method calculateWages() to calculate their
monthly salary. Also override getDesig () method depending on the type of contract
employee.

Answer 1

class Employee {
    private String firstName;
    private String lastName;

    public String getFirstName() {
        return firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}

class ContractEmployee extends Employee {
    String depart;
    String desig;
    double salary;

    public void setDepartment(String depart) {
        this.depart = depart;
    }

    public void setDesignation(String desig) {
        this.desig = desig;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    public String getDepartment() {
        return depart;
    }

    public String getDesignation() {
        return desig;
    }

    public double getSalary() {
        return salary;
    }

    public void dispFullName() {
        System.out.println(getFirstName() + getLastName());
    }
}

class RegularEmployee extends Employee {
    String depart;
    String desig;
    double salary;

    public void setDepartment(String depart) {
        this.depart = depart;
    }

    public void setDesignation(String desig) {
        this.desig = desig;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    public String getDepartment() {
        return depart;
    }

    public String getDesignation() {
        return desig;
    }

    public double getSalary() {
        return salary;
    }

    public void dispFullName() {
        System.out.print(getFirstName() + " " + getLastName());
    }
}

class EmployeeTime1 {
    public static void main(String args[]) {
        ContractEmployee Ct = new ContractEmployee();
        Ct.setFirstName("Steve");
        Ct.setLastName("Jobs");
        Ct.setDepartment("Sales");
        Ct.setDesignation("CEO");
        Ct.setSalary(1500000);
        String fnm = Ct.getFirstName();
        String lnm = Ct.getLastName();
        String dep = Ct.getDepartment();
        String desg = Ct.getDesignation();
        double sal = Ct.getSalary();
        System.out.println("First Name : " + fnm);
        System.out.println("Last Name : " + lnm);
        System.out.println("Department : " + dep);
        System.out.println("Designation : " + desg);
        System.out.println("Salary : " + sal);
        Ct.dispFullName();
        RegularEmployee Rg = new RegularEmployee();
        Rg.setFirstName("Steve");
        Rg.setLastName("Jobs");
        Rg.setDepartment("Sales");
        Rg.setDesignation("CEO");
        Rg.setSalary(1500000);
        fnm = Rg.getFirstName();
        lnm = Rg.getLastName();
        dep = Rg.getDepartment();
        desg = Rg.getDesignation();
        sal = Rg.getSalary();
        System.out.println("First Name : " + fnm);
        System.out.println("Last Name : " + lnm);
        System.out.println("Department : " + dep);
        System.out.println("Designation : " + desg);
        System.out.println("Salary : " + sal);
        Rg.dispFullName();

    }

}