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() {
    }

    public void setId(long id) {
        this.id = id;
    }

    @Override
    public long getId() {
        return id;
    }

    public void setPayerName(String payerName) {
        this.payerName = payerName;
    }

    @Override
    public String getPayerName() {
        return payerName;
    }

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

    public int getExpiredMonth() {
        return expiredMonth;
    }

    public void setExpiredMonth(int expiredMonth) {
        this.expiredMonth = expiredMonth;
    }

    public int getExpiredYear() {
        return expiredYear;
    }

    public void setExpiredYear(int expiredYear) {
        this.expiredYear = expiredYear;
    }

    @Override
    public String getShortDescription() {
        return "CC " + payerName + " " + number.substring(number.length() - 4) + " " + expiredMonth + "/" + expiredYear;
    }

    @Override
    public int compareTo(Payment o) {
        if (this.getShortDescription().length() > o.getShortDescription().length()) {
            return 1;
        } else if (this.getShortDescription().equals(o.getShortDescription())) {
            return 0;
        }
        return -1;
    }
}