Update SavingsAccount.java

training-assignments/src/java/eu/sig/training/ch04-duplication/bankaccounts/SavingsAccount.java

@@ -1,28 +1,20 @@
-package eu.sig.training.ch04;
+package eu.sig.training.ch04.v3;
+
+import eu.sig.training.ch04.BusinessException;
+import eu.sig.training.ch04.Money;
 
 // tag::SavingsAccount[]
-public class SavingsAccount {
-    private static final float INTEREST_PERCENTAGE = 0.05f;
-    private Money balance = new Money();
-    private CheckingAccount counterAccount = new CheckingAccount();
+public class SavingsAccount extends Account {
+    CheckingAccount registeredCounterAccount;
 
-    public void setaccountnumber(CheckingAccount account) {
-    this.counteraccount = account;
-    }
-    public Transfer makeTransfer(Money amount)
+    @Override
+    public Transfer makeTransfer(String counterAccount, Money amount)
         throws BusinessException {
-            Transfer result = new Transfer(this, acct, amount);
+        Transfer result = super.makeTransfer(counterAccount, amount);
+        if (result.getCounterAccount().equals(this.registeredCounterAccount)) {
             return result;
-        }
-    }
-
-
-    public void addInterest() {
-        Money interest = balance.multiply(INTEREST_PERCENTAGE);
-        if (interest.greaterThan(0)) {
-            balance.add(interest);
         } else {
-            balance.substract(interest);
+            throw new BusinessException("Counter-account not registered!");
         }
     }
 }