made changes to the following files:

Author: enyabuti

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/BankAccount.java

@@ -1,8 +1,9 @@
 package com.codedifferently.lesson17.bank;
 
-import com.codedifferently.lesson17.bank.exceptions.InsufficientFundsException;
 import java.util.Set;
 
+import com.codedifferently.lesson17.bank.exceptions.InsufficientFundsException;
+
 /** Base class for all bank accounts. */
 public abstract class BankAccount {
   private String accountNumber;
@@ -14,18 +15,11 @@ public BankAccount(String accountNumber, Set<Customer> owners, double initialBal
     this.owners = owners;
     this.balance = initialBalance;
   }
-
-  public String getAccountNumber() {
-    return accountNumber;
-  }
-
-  public double getBalance() {
-    return balance;
-  }
-
-  public Set<Customer> getOwners() {
-    return owners;
-  }
+    /**
+     * Gets the account number.
+     *
+     * @return The account number.
+     */
 
   public void withdraw(double amount) throws InsufficientFundsException {
     if (amount > balance) {
@@ -34,10 +28,19 @@ public void withdraw(double amount) throws InsufficientFundsException {
     balance -= amount;
   }
 
-  public void deposit(double amount) {
-    if (amount <= 0) {
-      throw new IllegalArgumentException("Deposit amount must be positive");
-    }
-    balance += amount;
-  }
+  /**
+   * Deposits funds into the account.
+   *
+   * @param amount The amount to deposit.
+   */
+  public void deposit(double amount) throws IllegalStateException {
+    if (isClosed()) {
+          throw new IllegalStateException("Cannot deposit to a closed account");
+        }
+        if (amount <= 0) {
+          throw new IllegalArgumentException("Deposit amount must be positive");
+        }
+        balance += amount;
+      }
+      protected abstract boolean isClosed();
 }

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/CheckingAccount.java

@@ -45,20 +45,7 @@ public Set<Customer> getOwners() {
     return owners;
   }
 
-  /**
-   * Deposits funds into the account.
-   *
-   * @param amount The amount to deposit.
-   */
-  public void deposit(double amount) throws IllegalStateException {
-    if (isClosed()) {
-      throw new IllegalStateException("Cannot deposit to a closed account");
-    }
-    if (amount <= 0) {
-      throw new IllegalArgumentException("Deposit amount must be positive");
-    }
-    balance += amount;
-  }
+  
 
   /**
    * Withdraws funds from the account.

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/SavingsAccount.java

@@ -1,6 +1,7 @@
 package com.codedifferently.lesson17.bank;
 
 import java.util.Set;
+import java.util.UUID;
 
 /** Represents a savings account. */
 public class SavingsAccount extends BankAccount {
@@ -17,4 +18,20 @@ public SavingsAccount(String accountNumber, Set<Customer> owners, double initial
   public void depositFunds(Check check) {
     throw new UnsupportedOperationException("Cannot withdraw from savings account.");
   }
+
+  public String getAccountNumber() {
+    // TODO Auto-generated method stub
+    throw new UnsupportedOperationException("Unimplemented method 'getAccountNumber'");
+  }
+
+  public Map<UUID getOwners() {
+    // TODO Auto-generated method stub
+    throw new UnsupportedOperationException("Unimplemented method 'getOwners'");
+  }
+
+  @Override
+  protected boolean isClosed() {
+    // TODO Auto-generated method stub
+    throw new UnsupportedOperationException("Unimplemented method 'isClosed'");
+  }
 }