FamilyMembership.java

import java.util.ArrayList;

public class FamilyMembership extends Membership {

    private ArrayList<String> familyMembers;

    public FamilyMembership(String membershipId,
                            Customer customer,
                            String membershipDate) {

        super(membershipId, customer, membershipDate);
        familyMembers = new ArrayList<>();
    }

    public FamilyMembership(String membershipId,
                            Customer customer) {

        super(membershipId, customer);
        familyMembers = new ArrayList<>();
    }

    public void addFamilyMember(String name) {
        familyMembers.add(name);
    }


    public ArrayList<String> getFamilyMembers() {
        return familyMembers;
    }

    public void setFamilyMembers(ArrayList<String> familyMembers) {
        this.familyMembers = familyMembers;
    }

    @Override
    public int getBorrowLimit() {
        return 25;
    }

    @Override
    public double getMembershipFee() {
        return 80.0;
    }

    public boolean isFamilyMember(String name) {
        return familyMembers.contains(name);
    }

    public String checkAuthorization(String name) {

        if (familyMembers.contains(name)) {
            return name + " is authorized.";
        }

        return name + " is not authorized.";
    }
}