inheritance Asigment

package inheritance;

class Employee  // employee class as base class
{
    protected double salary = 30000D;
    public Employee()
    {
        System.out.println("This is constructor of Employee class");
    }
}

class Developer extends Employee // developer is child class of employee
{
    double bonus = 10000;
    // this constructor will execute after executing employee constructor
    public Developer()
    {
        System.out.println("This is constructor of developer class");
    }

    public void displaySalary()
    {
        // the variable 'salary' is in the base class
        System.out.println("The salary is : "+ (salary + bonus) + "\n");
    }
}

class Tester extends Employee // Tester is another child class of Employee
{
    double bonus = 20000;
    // this constructor will execute after executing Employee constructor
    public Tester()
    {
        System.out.println("This is constructor of Tester class");
    }

    public void displaySalary()
    {
        // the variable 'salary' is in the base class
        System.out.println("The salary is : "+ (salary + bonus)+ "\n");
    }
}

package inheritance;

public class inheritance
{
    public static void main(String[] args)
    {
        // The constructors of base and derived class will be called respectively
        Developer dev = new Developer();
        dev.displaySalary();

        Tester tester = new Tester();
        tester.displaySalary();
    }
}

//OUTPUT

//This is constructor of Employee class
//This is constructor of developer class
//The salary is : 40000.0
//
//This is constructor of Employee class
//This is constructor of Tester class
//The salary is : 50000.0