InterfaceComparableLab/src/main/java/Check.java

public class Check implements Payment {
    private String payerName;
   private String routingNumber;
  private String accountNumber;
    private long id;

    public Check(){

    }

    public Check( long id, String payerName, String routingNumber, String accountNumber){
this.id = id;
this.payerName = payerName;
this.accountNumber = getLastFourAccountNumber(accountNumber);
this.routingNumber = routingNumber;


    }

   public void setId(long id){

       this.id = id;
   }
    public long getId() {
        return id;
    }

    public String getShortDescription() {
        return "Check " + getPayerName()  + " " + "***" + getAccountNumber();
    }


    public String getLastFourAccountNumber(String accountNumber){

            return accountNumber.replace(accountNumber.substring(0, accountNumber.length()-4), "");

        }


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

    public String getPayerName() {
        return payerName;
    }

    public void setRoutingNumber(String routingNumber) {
        this.routingNumber = routingNumber;
    }

    public String getRoutingNumber() {
       return routingNumber;
    }

    public void setAccountNumber(String accountNumber){
       this.accountNumber = accountNumber;
    }

    public String getAccountNumber(){
       return accountNumber;
    }

    public int compareTo(Payment o) {


     if (this.getShortDescription().compareTo(o.getShortDescription()) > 0) return 1;

     else  if (this.getShortDescription().compareTo(o.getShortDescription()) < 0)return -1;

        else return 0;
    }
}