# Com / Example

## Overview

The `com.example` package serves as the root namespace for a small set of example modules within this codebase. These modules appear to be scaffolded for code-quality rule testing and regression scenarios rather than production functionality. The package itself contains no source files directly at its top level; instead, it organizes child sub-packages that each address a specific issue, rule, or test case.

## Sub-module Guide

### bugca002

The `bugca002` sub-package (`com.example.bugca002`) provides the `KnownClass` type, a placeholder class whose only purpose is to resolve an import statement from a JSP view in another module. It has no fields, no meaningful constructor logic, and its sole method (`execute()`) is a no-op. This module is wired to a JSP file named **BugCa002Language Before Import.jsp**, which imports `KnownClass` to ensure the import resolves at compile time.

The naming convention (`bug-ca-002-attr-order` as the parent directory) suggests this module was created to address a specific code-quality rule related to attribute or import ordering. It exists as scaffolding — a structural dependency that allows another module's import to compile, without introducing any runtime behavior of its own.

### Sub-module Relationships

Currently, `bugca002` is the only indexed child module under `com.example`. It operates in isolation with no dependencies on other sub-modules within this package. Its only outbound relationship is with the JSP file that imports `KnownClass`, which itself lives outside this package.

```mermaid
flowchart LR
    comexample["com.example (parent)"] --> bugca002["bugca002 (child)"]
    bugca002 -->|provides| KN["KnownClass"]
    KN -->|imported by| JSP["BugCa002Language Before Import.jsp"]
```

## Key Patterns and Architecture

- **Placeholder / stub pattern.** The `KnownClass` class is a minimal stub — no state, no behavior — that exists solely to satisfy a compile-time import. This is a common technique in Java/JSP projects where a view references a class that may be developed in parallel or exists only for resolution purposes.
- **Issue-tied packaging.** Sub-package names like `bugca002` are tied to specific issue tracker items or code-quality rules, making it easy to locate the code associated with a given fix. This convention suggests the project uses a naming scheme where `bug-ca-NNN` maps to a rule or defect number.
- **No cross-module coupling within `com.example`.** Each child module is self-contained. There are no shared interfaces, base classes, or dependency injection wiring between sub-packages at this level.

## Dependencies and Integration

### Inbound
- No source files at the top-level `com.example` package.
- The child module `bugca002` is consumed by a JSP view outside this package.

### Outbound
- No external library dependencies are declared by any child module.
- No cross-module dependencies exist within `com.example` itself.

## Notes for Developers

- **This is scaffolding, not production code.** Modules in this package appear to exist for code-quality rule compliance and regression testing. Do not expect business logic here.
- **When extending.** If a module here needs real behavior, start by adding state and a constructor, then populate no-op methods with implementation. The current design makes it safe to evolve stubs without breaking callers.
- **Tracking.** If you encounter a new code-quality rule or defect that requires a placeholder class, follow the existing convention: create a `bug-ca-NNN` directory and a corresponding sub-package (e.g., `com.example.bugcaXXX`) with a `KnownClass`-style stub.