Customer.java

package domain;

public class Customer extends Person {
    private String custNbr;

    public Customer(String custNbr, String name, String surname, Address address) {
        super(name, surname, address);
        this.setCustNbr(custNbr);
    }

    public String getCustNbr() {
        return custNbr;
    }

    private void setCustNbr(String custNbr) {
        this.custNbr = custNbr;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Customer customer = (Customer) o;
        return custNbr.equals(customer.custNbr);
    }

    @Override
    public int hashCode() {
        return custNbr.hashCode();
    }

    @Override
    public String toString() {
        return "CustNbr: " + custNbr + " " + super.toString();
    }
}