class Employee

package com.company;

public class Employee extends Person{

    private final static double DEFAULT_OVERTIME_SALARY = 0.0;

    private double daySalary;

    public Employee(String name, int age, boolean isMan, double daySalary) {
        super(name, age, isMan);
        this.setDaySalary(daySalary);
    }

    private void setDaySalary(double daySalary) {
        if (daySalary < 0) {
            throw new IllegalArgumentException("Day salary cannot be negative.");
        }
        this.daySalary = daySalary;
    }

    @Override
    public double calculateOvertime(double hours) {
        if (super.getAge() < 18) {
            return DEFAULT_OVERTIME_SALARY;
        } else {
            return getOvertimeMoney(hours);
        }
    }

    @Override
    public void showEmployeeInfo() {
        System.out.println(String.format("Name: %s%n" +
                "Age: %d", super.getName(), super.getAge()));
        if (super.isMan()) {
            System.out.println("Sex: male");
        } else {
            System.out.println("Sex: female");
        }
        System.out.println(String.format("Daily salary: %f%n" , this.daySalary));
    }

    private double getOvertimeMoney(double hours) {
        double moneyPerHour = daySalary / 8;
        return hours * (moneyPerHour * 1.5);
    }
}