# Getting Started

This repository is a small Java codebase that appears to document different source-file header styles rather than implement a large runtime application. Most classes are simple standalones, so the fastest way to understand the project is to compare the example files and focus on their header comments, version markers, and license text.

## What This Project Does

The project looks like a compact reference set for source headers in Java. It includes examples with no header, partial headers, MIT license text, long version histories, and cross-linked change markers. In practice, this makes the repository useful for tools, documentation, or tests that need to recognize header patterns.

## Recommended Reading Order

1. [` .codewiki/overview.md`](.codewiki/overview.md) — start here for the repository-level summary.
2. [`src/main/java/NoHeader.java`](src/main/java/NoHeader.java) — the simplest baseline example.
3. [`src/main/java/MitLicense.java`](src/main/java/MitLicense.java) — a minimal license-header example.
4. [`src/main/java/WithHeader.java`](src/main/java/WithHeader.java) and [`src/main/java/PartialHeader.java`](src/main/java/PartialHeader.java) — compare a standard header with a partially filled one.
5. [`src/main/java/Crosslink.java`](src/main/java/Crosslink.java) and [`src/main/java/LongHeader.java`](src/main/java/LongHeader.java) — review the more specialized metadata-heavy examples.

## Key Entry Points

There are no highly connected classes in this codebase, so there is no single central abstraction to learn first. Treat each file as an entry point into a different header pattern:

- [`src/main/java/NoHeader.java`](src/main/java/NoHeader.java) — no header comment; useful as the control sample.
- [`src/main/java/MitLicense.java`](src/main/java/MitLicense.java) — simple license block.
- [`src/main/java/WithHeader.java`](src/main/java/WithHeader.java) — compact versioned header.
- [`src/main/java/PartialHeader.java`](src/main/java/PartialHeader.java) — partially completed descriptive header.
- [`src/main/java/Crosslink.java`](src/main/java/Crosslink.java) — header plus in-file add markers.
- [`src/main/java/LongHeader.java`](src/main/java/LongHeader.java) — long version history example.

## Project Structure

The codebase is extremely flat:

- `.codewiki/` — generated documentation and repository summaries.
- `src/main/java/` — the example Java source files.

Each Java file is self-contained and does not appear to depend on shared utilities, service layers, or a framework-specific application bootstrap.

```mermaid
flowchart TD
Root["Repository"] --> Docs[".codewiki"]
Root --> Source["src/main/java"]
Source --> NoHeader["NoHeader.java"]
Source --> MitLicense["MitLicense.java"]
Source --> WithHeader["WithHeader.java"]
Source --> PartialHeader["PartialHeader.java"]
Source --> Crosslink["Crosslink.java"]
Source --> LongHeader["LongHeader.java"]
```

## Configuration

There is no obvious runtime configuration layer in the indexed files. The main “configuration” you should care about is the source header content itself:

- `MitLicense.java` shows license text.
- `WithHeader.java` and `PartialHeader.java` show structured comment blocks.
- `Crosslink.java` includes change markers inside the class.
- `LongHeader.java` contains an extended version history.

If this repository is used in automation, the key inputs are likely the file headers and naming conventions rather than environment variables or app settings.

## Common Patterns

- **Standalone classes:** each file is intentionally small and isolated.
- **Header-first convention:** most of the meaningful content is in the comment block at the top of the file.
- **Version markers:** many examples include revision tags such as `v72.00.00`.
- **Localized comments:** some headers mix Japanese labels with English names and codes.
- **Change markers:** `Crosslink.java` uses `ADD START` / `ADD END` markers to bracket a field.
- **No framework overhead:** there is no visible dependency injection, routing, or application startup code.

## Where to Go Next

After you have read the examples above, you should be able to recognize the main header styles used in this repository. From there, use the source files as a reference set whenever you need to compare or generate similar header formats.