chore: file mods

Author: haldanek

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

@@ -11,7 +11,16 @@ public class BankAtm {
 
   private final Map<UUID, Customer> customerById = new HashMap<>();
   private final Map<String, CheckingAccount> accountByNumber = new HashMap<>();
+  public CheckingAccount createCheckingAccount(String accountNumber, Set<Customer> owners, double initialBalance) {
+    boolean hasBusinessOwner = owners.stream().anyMatch(Customer::isBusiness);
 
+    if (hasBusinessOwner) {
+      return new BusinessCheckingAccount(accountNumber, owners, initialBalance);
+    } else {
+      return new CheckingAccount(accountNumber, owners, initialBalance);
+    }
+    }
+    
   /**
    * Adds a checking account to the bank.
    *

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

@@ -0,0 +1,20 @@
+package com.codedifferently.lesson17.bank;
+
+import java.util.Set;
+
+public class BusinessCheckingAccount extends CheckingAccount {
+
+    public BusinessCheckingAccount(String accountNumber, Set<Customer> owners, double balance) {
+        super(accountNumber, owners, balance);
+        validateBusinessOwners(owners);
+            }
+
+            private void validateBusinessOwners(Set<Customer> owners) {
+                boolean hasBusinessOwner = owners.stream().anyMatch(Customer::isBusiness);
+                if (!hasBusinessOwner) {
+                    throw new IllegalArgumentException("At least one owner must be a business for a BusinessCheckingAccount");
+                }
+            }
+        
+    
+}

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

@@ -10,16 +10,20 @@ public class Customer {
   private final UUID id;
   private final String name;
   private final Set<CheckingAccount> accounts = new HashSet<>();
+  private boolean isBusiness;
+
 
   /**
    * Creates a new customer.
    *
    * @param id The ID of the customer.
    * @param name The name of the customer.
    */
-  public Customer(UUID id, String name) {
+  public Customer(UUID id, String name, boolean isBusiness) {
     this.id = id;
     this.name = name;
+    this.isBusiness = isBusiness;
+   
   }
 
   /**
@@ -75,4 +79,8 @@ public boolean equals(Object obj) {
   public String toString() {
     return "Customer{" + "id=" + id + ", name='" + name + '\'' + '}';
   }
+
+  public boolean isBusiness() {
+    return isBusiness;
+  }
 }