Employee

public class Employee {

    private String firstName, lastName;
    private boolean isPaid;
    private int hours;

    public Employee(String firstName, String lastName, boolean isPaid, int hours) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.isPaid = isPaid;
        this.hours = Math.max(hours, 0);
    }

    public String getFirstName() {
        return firstName;
    }

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

    public String getLastName() {
        return lastName;
    }

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

    public boolean isPaid() {
        return isPaid;
    }

    public int getHours() {
        return hours;
    }

    public void setHours(int hours) {
        this.hours = hours;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "firstNam='" + firstName + '\'' +
                ", lastName='" + lastName + '\'' +
                ", isPaid=" + isPaid +
                ", hours=" + hours +
                '}';
    }
}