KS

src/main/java/com/zipcoder/payment/Check.java

     private String payerName;
     private String routingNumber;
     private String accountNumber;
+
+    Check(){
+        ID = 123;
+        payerName =  "Tia Mowry";
+        routingNumber = "34343456";
+        accountNumber = "***4551";
+    }
+
     public Long getID() {
         return ID;
     }
     }
 
     public String getShortDescription() {
-        return null;
+        return "Check " + payerName + " " + accountNumber;
+    }
+
+    public String getRoutingNumber() {
+        return routingNumber;
     }
 
+    public String getAccountNumber(String accountNumber) { return accountNumber;}
+
+    public void setAccountNumber(String accountNumber) { this.accountNumber = accountNumber;}
+
     public void setID(long ID) {
         this.ID = ID;
     }
         this.payerName = payerName;
     }
 
-    public void setRoutingNumber(String routingNumber) {
-    this.routingNumber = routingNumber;
-    }
+    public void setRoutingNumber(String routingNumber) { this.routingNumber = routingNumber; }
 
-    public String getRoutingNumber() {
-        return routingNumber;
-    }
 }

src/main/java/com/zipcoder/payment/Payment.java

 package com.zipcoder.payment;
-
-public interface Payment{
+//extends Comparable
+public interface Payment  {
     public Long getID();
     public String getPayerName();
     public String getShortDescription();

src/main/java/com/zipcoder/payment/Paypal.java

 package com.zipcoder.payment;
 
 public class Paypal implements Payment {
+    private final long ID;
+    private String payerName;
+    private String email;
+
     public Long getID() {
         return null;
     }
     public String getShortDescription() {
         return null;
     }
+    Paypal (){
+        ID = 212131;
+        email = "khalil@gmail.com";
+        payerName = "Khalil";
+    }
 }

src/test/java/com/zipcoder/payment/CheckTest.java

         String actual = check.getRoutingNumber();
         assertEquals(routingNumber,actual);
     }
+    @Test
+    public void testAccountNumber(){
+        Check check = new Check();
+
+        String accountNumber = "1234551";
+
+        check.setAccountNumber(accountNumber);
+
+        String actual = check.getAccountNumber(accountNumber);
+        assertEquals(accountNumber,actual);
+    }
+    @Test
+    public void testGetShortDescription(){
+        Check check = new Check();
+
+        String payerName = "Khalil Saboor ";
+        String accountNumber = "***4551";
+
+        check.setPayerName(payerName);
+        check.getAccountNumber(accountNumber);
+        check.getRoutingNumber();
+
+
+        String expected = "Check " + payerName + " " + accountNumber;
+        System.out.println(check.getShortDescription());
+        String actual = check.getShortDescription();
+        assertEquals(expected,actual);
+    }
 }

src/test/java/com/zipcoder/payment/PaypalTest.java

+package com.zipcoder.payment;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class PaypalTest {
+
+    @Test
+    public void getID() {
+    }
+
+    @Test
+    public void getPayerName() {
+    }
+
+    @Test
+    public void getShortDescription() {
+    }
+}