Client

public class Client extends Credit{

    private String firstName;
    private String lastName;
    private int age;
    private double budget;
    private int repaymentTime;

    public Client(CreditType creditType, String firstName, String lastName, int age, double budget, int repaymentTime) {
        super(creditType);
        this.firstName = firstName;
        this.lastName = lastName;
        setAge(age);
        this.budget = budget;
        setRepaymentTime(repaymentTime);
    }

    public String getFirstName() {
        return this.firstName;
    }

    public String getLastName( ) {
        return this.lastName;
    }

    public void setAge(int age) {
        if (age < 18 || age > 90) {
            throw new IllegalArgumentException("Cannot give credit to that person");
        } else {
            this.age = age;
        }
    }

    public int getAge() {
        return this.age;
    }

    public double getBudget() {
        return this.budget;
    }

    public void setRepaymentTime(int repaymentTime) {
        if (repaymentTime < 3) {
            throw new IllegalArgumentException("Repayment time too low");
        }
        else {
            this.repaymentTime = repaymentTime;
        }
    }

    public int getRepaymentTime() {
        return this.repaymentTime;
    }


}