# aayush12-ai/java-library-management architecture

> Architecture diagram of the GitHub repository aayush12-ai/java-library-management, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/aayush12-ai/java-library-management
- Repository: https://github.com/aayush12-ai/java-library-management

## Overview

This is a Java Swing desktop library-management application backed by MySQL. The operator works in a single dashboard to maintain and search the catalog, issue and return copies, and review live inventory and circulation statistics. The dashboard delegates catalog operations to LibraryDAO and circulation transactions to IssueDAO; both access MySQL through DatabaseConnection. The README documents live connection settings, schema initialization, and automatic dashboard refresh. Some dashboard handlers and database code were only partially excerpted, so the graph omits unsupported finer-grained calls.

Main entry points: [`src/main/java/com/library/LibraryDashboard.java`](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDashboard.java) (Library dashboard), [`src/main/java/com/library/DatabaseConnection.java`](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/DatabaseConnection.java) (JDBC connection manager), [`src/main/java/com/library/IssueDAO.java`](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/IssueDAO.java) (Issue and return), [`src/main/java/com/library/Main.java`](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Main.java) (Application entry)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_app["Desktop application"]
  node_main["Application entry<br/>[Main.java]"]
  node_dashboard["Library dashboard"]
end

subgraph group_catalog["Catalog management"]
  node_catalog_ops["Catalog operations<br/>[LibraryDAO.java]"]
  node_catalog_search["Catalog search<br/>[LibraryDAO.java]"]
  node_inventory_stats["Inventory statistics<br/>[LibraryDAO.java]"]
end

subgraph group_circulation["Circulation"]
  node_issue_ops["Issue and return<br/>[IssueDAO.java]"]
end

subgraph group_storage["Persistence and models"]
  node_book_model["Book model<br/>[Book.java]"]
  node_student_model["Student model<br/>[Student.java]"]
  node_issued_model["Issue record model<br/>[IssuedBook.java]"]
  node_db_connection["JDBC connection manager"]
  node_mysql[("MySQL database")]
end

subgraph group_presentation["Presentation components"]
  node_stat_card["Statistics card<br/>[StatCard.java]"]
  node_ui_theme["UI theme and controls<br/>[UITheme.java]"]
end

node_operator(("Library operator"))

node_operator -->|"starts"| node_main
node_main -->|"initializes database"| node_db_connection
node_main -->|"launches"| node_dashboard
node_operator -->|"uses"| node_dashboard
node_dashboard -->|"delegates catalog actions"| node_catalog_ops
node_dashboard -.->|"searches catalog"| node_catalog_search
node_dashboard -.->|"refreshes metrics"| node_inventory_stats
node_dashboard -->|"delegates circulation"| node_issue_ops
node_dashboard -->|"displays metrics"| node_stat_card
node_dashboard -->|"uses controls"| node_ui_theme
node_catalog_ops -->|"maps records"| node_book_model
node_issue_ops -->|"checks inventory"| node_book_model
node_issue_ops -->|"uses student data"| node_student_model
node_catalog_ops -->|"opens connections"| node_db_connection
node_issue_ops -->|"opens connections"| node_db_connection
node_db_connection -->|"connects to"| node_mysql
node_dashboard -.->|"tests connection"| node_db_connection
node_stat_card -->|"uses theme"| node_ui_theme

click node_main "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Main.java"
click node_dashboard "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDashboard.java"
click node_catalog_ops "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java"
click node_catalog_search "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java"
click node_inventory_stats "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java"
click node_issue_ops "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/IssueDAO.java"
click node_book_model "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Book.java"
click node_student_model "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Student.java"
click node_issued_model "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/IssuedBook.java"
click node_db_connection "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/DatabaseConnection.java"
click node_stat_card "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/StatCard.java"
click node_ui_theme "https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/UITheme.java"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_main,node_dashboard toneBlue
class node_catalog_ops,node_catalog_search,node_inventory_stats toneAmber
class node_issue_ops toneMint
class node_book_model,node_student_model,node_issued_model,node_db_connection,node_mysql toneRose
class node_stat_card,node_ui_theme,node_operator toneIndigo
```

## Components

### Desktop application

- [Application entry](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Main.java): `src/main/java/com/library/Main.java`
- [Library dashboard](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDashboard.java): `src/main/java/com/library/LibraryDashboard.java`

### Catalog management

- [Catalog operations](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java): `src/main/java/com/library/LibraryDAO.java`
- [Catalog search](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java): `src/main/java/com/library/LibraryDAO.java`
- [Inventory statistics](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/LibraryDAO.java): `src/main/java/com/library/LibraryDAO.java`

### Circulation

- [Issue and return](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/IssueDAO.java): `src/main/java/com/library/IssueDAO.java`

### Persistence and models

- [Book model](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Book.java): `src/main/java/com/library/Book.java`
- [Student model](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/Student.java): `src/main/java/com/library/Student.java`
- [Issue record model](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/IssuedBook.java): `src/main/java/com/library/IssuedBook.java`
- [JDBC connection manager](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/DatabaseConnection.java): `src/main/java/com/library/DatabaseConnection.java`
- **MySQL database**

### Presentation components

- [Statistics card](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/StatCard.java): `src/main/java/com/library/StatCard.java`
- [UI theme and controls](https://github.com/aayush12-ai/java-library-management/blob/main/src/main/java/com/library/UITheme.java): `src/main/java/com/library/UITheme.java`

### Other components

- **Library operator**

## Connections

- Library operator → Application entry: starts (evidence: `src/main/java/com/library/Main.java`)
- Application entry → JDBC connection manager: initializes database (evidence: `src/main/java/com/library/Main.java`)
- Application entry → Library dashboard: launches (evidence: `src/main/java/com/library/Main.java`)
- Library operator → Library dashboard: uses (evidence: `README.md`)
- Library dashboard → Catalog operations: delegates catalog actions (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Library dashboard → Catalog search: searches catalog (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Library dashboard → Inventory statistics: refreshes metrics (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Library dashboard → Issue and return: delegates circulation (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Library dashboard → Statistics card: displays metrics (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Library dashboard → UI theme and controls: uses controls (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Catalog operations → Book model: maps records (evidence: `src/main/java/com/library/LibraryDAO.java`)
- Issue and return → Book model: checks inventory (evidence: `src/main/java/com/library/IssueDAO.java`)
- Issue and return → Student model: uses student data (evidence: `src/main/java/com/library/IssueDAO.java`)
- Catalog operations → JDBC connection manager: opens connections (evidence: `src/main/java/com/library/LibraryDAO.java`)
- Issue and return → JDBC connection manager: opens connections (evidence: `src/main/java/com/library/IssueDAO.java`)
- JDBC connection manager → MySQL database: connects to (evidence: `src/main/java/com/library/DatabaseConnection.java`)
- Library dashboard → JDBC connection manager: tests connection (evidence: `src/main/java/com/library/LibraryDashboard.java`)
- Statistics card → UI theme and controls: uses theme (evidence: `src/main/java/com/library/StatCard.java`)