InterfaceComparableLab/src/main/java/com/zipcoder/payment/CreditCard.java

package com.zipcoder.payment;

public class CreditCard implements Payment {
    private long id;
    private String payerName;
    private String number;
    private int expiredMonth;
    private int expiredYear;

    public CreditCard(long id, String payerName, String number, int expiredMonth, int expiredYear) {
        this.id = id;
        this.payerName = payerName;
        this.number = number;
        this.expiredMonth = expiredMonth;
        this.expiredYear = expiredYear;

    }
    public long getId() {
        return id;
    }
    public String getPayerName() {
        return payerName;
    }
    public String getNumber() {
        return number;
    }
    public int getExpiredMonth() {
        return expiredMonth;
    }
    public int getExpiredYear() {
        return expiredYear;
    }

    public String getShortDescription(){
        return String.format("CC %s %s %d/%d", payerName, number.substring(number.length() - 4, number.length()), expiredMonth, expiredYear);
    }

    public int compareTo(Payment p) {
        return this.getShortDescription().compareTo(p.getShortDescription());
    }

}