Java Inheritance Programming - Employee class with methods called work, getSalary

Java Inheritance: Exercise-4 with Solution

Write a Java program to create a class called Employee with methods called work() and getSalary(). Create a subclass called HRManager that overrides the work() method and adds a new method called addEmployee().

Sample Solution:

Java Code:

// Employee.java
// Parent class Employee
public class Employee {

    // Private field to store the salary of the employee
    private int salary;

    // Constructor to initialize the salary of the employee
    public Employee(int salary) {
        this.salary = salary;
    }

    // Method to simulate the employee working
    public void work() {
        // Print a message indicating the employee is working
        System.out.println("working as an employee!");
    }

    // Getter method to retrieve the salary of the employee
    public int getSalary() {
        return salary;
    }
} 

// HRManager.java
// Child class HRManager
public class HRManager extends Employee {

    // Constructor to initialize the salary of the HRManager
    public HRManager(int salary) {
        // Call the parent class constructor with the salary
        super(salary);
    }

    // Overridden method to simulate the HRManager working
    public void work() {
        // Print a message indicating the HRManager is managing employees
        System.out.println("\nManaging employees");
    }

    // Method to simulate adding a new employee
    public void addEmployee() {
        // Print a message indicating a new employee is being added
        System.out.println("\nAdding new employee!");
    }
}

// Main.java
// Main class
public class Main {

    // Main method
    public static void main(String[] args) {
        // Create an Employee object with a salary of 40000
        Employee emp = new Employee(40000);

        // Create an HRManager object with a salary of 70000
        HRManager mgr = new HRManager(70000);

        // Call the work method on the Employee object
        emp.work();

        // Print the salary of the Employee object
        System.out.println("Employee salary: " + emp.getSalary());

        // Call the work method on the HRManager object
        mgr.work();

        // Print the salary of the HRManager object
        System.out.println("Manager salary: " + mgr.getSalary());

        // Call the addEmployee method on the HRManager object
        mgr.addEmployee();
    }
}

Output:

working as an employee!
Employee salary: 40000

Managing employees
Manager salary: 70000

Adding new employee!

Explanation:

In the above exercise, the Employee class has a work() method that prints a message and a getSalary() method that returns the employee's salary. The HRManager subclass extends the Employee class and overrides the work() method to display a different message. It adds a method addEmployee() that prints a message indicating that a new employee is being added. The Main class creates an instance of Employee and HRManager, calls the work() and getSalary() methods, and also calls the addEmployee() method on the HRManager object.

Flowchart:

Java Code Editor:

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