Added base classes

src/main/java/me/zacharias/bank/User.java

@@ -0,0 +1,42 @@
+package me.zacharias.bank;
+
+import java.util.ArrayList;
+import java.util.UUID;
+
+public class User {
+    UUID id;
+    String name;
+    String password;
+    ArrayList<Account> accounts;
+    
+    public User(String name, String password) {
+        this.name = name;
+        this.password = password;
+        id = UUID.randomUUID();
+        accounts = new ArrayList<>();
+    }
+    
+    public void createAccount(String name, int balance) {
+        Account account = new BankAccount(name, balance);
+        accounts.add(account);
+    }
+    
+    public void createSavingsAccount(String name, int balance) {
+        Account account = new SavingsAccount(name, balance);
+        accounts.add(account);
+    }
+    
+    public void deleteAccount(Account account) {
+        Account base = null;
+        for(Account a : accounts) {
+            if(a instanceof BankAccount) {
+                base = a;
+            }
+        }
+        if(base == null) {
+            throw new IllegalArgumentException("No bank accounts found");
+        }
+        base.TransferTransaction(account.getBalance(), "Account closed", account.getId(), base.getId());
+        accounts.remove(account);
+    }
+}