maxmonice/javabank

How maxmonice/javabank works

Polarity Bank has two parallel runtime surfaces: a Java console banking workflow backed by JDBC, and an evolving Spring Boot REST backend. The console path handles PIN-format checks, account authentication, account display, deposits and withdrawals, with balance changes persisted to MariaDB/MySQL. The backend currently shows application startup and simple greeting routes; the account endpoint and request DTO are present but their implementation excerpts are empty. The README documents broader backend intent, not a demonstrated connection to the console banking logic.

Main entry points: Database.java JDBC access · UI.java Terminal interface · BankAccount.java Bank account · JavabankBackendApplication.java Spring application

Components 15

Console Banking

Console entry src/main/java/JavaBank/Program.java
Terminal interface src/main/java/JavaBank/UI.java

Account Domain

Bank account src/main/java/JavaBank/BankAccount.java
Current account src/main/java/JavaBank/CurrentAccount.java
Savings account src/main/java/JavaBank/SavingsAccount.java
Authentication exceptions src/main/java/JavaBank/Exceptions

JDBC Persistence

JDBC access src/main/java/JavaBank/Database.java
PIN verification src/main/java/JavaBank/PasswordHasher.java
Accounts database Database/setup.sql

Spring REST Backend

Spring application javabank-backend/src/main/java/com/javabank/JavabankBackendApplication.java
Greeting routes javabank-backend/src/main/java/com/javabank/Controller/HelloController.java
Account endpoint javabank-backend/src/main/java/com/javabank/Controller/AccountController.java
Account request DTO javabank-backend/src/main/java/com/javabank/DataTransferObject/AccountRequest.java

Other components

Bank customer
API consumer

Connections 15

Bank customer → Console entry: launches README.md
Console entry → Terminal interface: starts src/main/java/JavaBank/Program.java
Bank customer → Terminal interface: enters credentials src/main/java/JavaBank/UI.java
Terminal interface → JDBC access: authenticates account src/main/java/JavaBank/UI.java
Terminal interface → Bank account: uses account src/main/java/JavaBank/UI.java
Terminal interface → Authentication exceptions: handles authentication errors src/main/java/JavaBank/UI.java
JDBC access → Authentication exceptions: throws src/main/java/JavaBank/Database.java
JDBC access → Bank account: constructs account src/main/java/JavaBank/Database.java
JDBC access → PIN verification: verifies PIN src/main/java/JavaBank/Database.java
Bank account → JDBC access: updates balance src/main/java/JavaBank/BankAccount.java
JDBC access → Accounts database: queries and updates src/main/java/JavaBank/Database.java
API consumer → Greeting routes: requests routes README.md
API consumer → Account endpoint: requests account API README.md
Spring application → Greeting routes: serves routes README.md
Spring application → Account endpoint: serves routes README.md

Drawn by GitDiagram on November 14, 2026 from the repository's file tree, README and source files. Read as Markdown ·