Employee

//------------------ Employee - Base class ------------------

public class Employee {

    protected String name;
    private static int idGenerator = 1000;
    protected double salary;
    protected int employID;

    public Employee(String name, double salary) {
        this.name = name;
        this.salary = salary;
        this.employID = idGenerator;
        idGenerator++;
    }

    public double getSalary() {
        return salary;
    }

    @Override
    public String toString() {
        return "Employee name is: " + this.name + ", his ID is: " + this.employID + ", and his salary is: " + this.salary + ".";
    }

    public double calcBonus() {
        return 0;
    }

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

//-------------------- Programmer ---------------------------------

public class Programmer extends Employee{

    public Programmer(String name, double salary) {
        super(name, salary);
    }

    @Override
    public double calcBonus() {
        return super.getSalary()*1.5;
    }
}

//------------------------ Secretary -----------------------------

public class Secretary extends Employee{

    private int wordsTypedPerMin;

    public Secretary(String name, double salary, int wordsTypedPerMin) {
        super(name, salary);
        this.wordsTypedPerMin = wordsTypedPerMin;
    }

    @Override
    public double calcBonus() {
        return super.getSalary()+500;
    }

    @Override
    public String toString() {
        return super.toString() + " In Addition, the secretary types: " + this.wordsTypedPerMin + " words per minute.";
    }
}

//------------------------------- Main class -------------------------

public class EmpMain {
    public static void main(String[] args) {
        Programmer pr = new Programmer("Benny", 1200);
        Secretary sec = new Secretary("Gilad", 1000, 74);
        System.out.println(pr.toString());
        System.out.println(sec.toString());
        pr.updateSalary(pr.calcBonus());
        sec.updateSalary(sec.calcBonus());
        System.out.println(pr.toString());
        System.out.println(sec.toString());
    }
}