readme

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Checkbook/src/main/java/AccountBook.java

+import java.time.LocalDate;
+
+public interface AccountBook {
+    public Integer getId();
+    public LocalDate getDate();
+    public TransactionType getType();
+    public String getMemo() ;
+    public void setMemo(String memo);
+    public Payee getPayee();
+    public void setPayee(Payee payee);
+    public Double getAmount();
+}

Checkbook/src/main/java/Checkbook.java

 public class Checkbook {
+
+    //blind us with your Java eloquence....
+
 }

Checkbook/src/main/java/GenericAccount.java

+
+public class GenericAccount {
+}

Checkbook/src/main/java/Transaction.java

     private Double amount;
 
     public Transaction(String memo, Payee payee, TransactionType typee, Double amount) {
+        this.typee = typee;
         this.memo = memo;
         this.payee = payee;
         this.amount = amount;
         return date.get();
     }
 
+    public TransactionType getType() {
+        return typee;
+    }
+
     public String getMemo() {
         return memo;
     }

Checkbook/src/main/java/TransactionType.java

+
 public enum TransactionType {
     DEBIT,
     CREDIT;

README.md

  * double checkbookValue() // sum of all Transactions (both Debits and Credits)
  * Transaction getTransactionsForDate(LocalDate aDate)
  * Transaction[] getAllTransactionsForPayee(Payee payee)
+ * Transaction[] getAllDebitTransactions()
+ * Transaction[] getAllCreditTransactions()
  
  Special Constructors:
  * Checkbook(double cashAmount)
  * boolean addAll(Collection<Transaction> c)
  * boolean removeAll(Collection<Transaction> c)
  * void clear()
+
+finally, make a generic account class, that takes any class which implements the AccountBook interface.