113-java-general-guidelines

General Java coding guidelines covering names, formatting, imports, documentation, exceptions, security, and resource handling. They provide consistent rules for everyday Java development.

In plain words
What is it for?
Use them when writing or reviewing Java packages, classes, methods, variables, imports, Javadoc, error handling, and resource-management code.
Why use it?
They reduce avoidable differences and mistakes that make code harder to read, maintain, debug, or secure. Consistent conventions also make it easier for developers to work across the same codebase.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/alkoleft/platform-context-exporter/113-java-general-guidelines
Clone the repo
git clone --depth 1 https://github.com/alkoleft/platform-context-exporter

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 5,375 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.05375
Opus 5 $0.00000 $0.02687
Sonnet 5 $0.00000 $0.01075
Haiku 4.5 $0.00000 $0.00537

Measured yesterday against content hash a26c1b8a714f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

113-java-general-guidelines scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/113-java-general-guidelines.mdc · 545 lines

How it starts

The opening of the file, as written. The whole thing — 545 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Java General Guidelines

This document outlines general Java coding guidelines covering fundamental aspects such as naming conventions for packages, classes, methods, variables, and constants; code formatting rules including indentation, line length, brace style, and whitespace usage; standards for organizing import statements; best practices for Javadoc documentation; and comprehensive error and exception handling with a strong focus on security, including avoiding sensitive information exposure, catching specific exceptions, and secure resource management.

Implementing These Principles

These guidelines are built upon the following core principles:

  1. Clarity and Consistency in Naming: Adhere to standard Java naming conventions for all code elements (packages, classes, methods, variables, constants). This promotes code that is intuitive, predictable, and easier for developers to understand and navigate.
  2. Readability through Formatting: Consistently apply formatting rules for indentation, line length, brace style, and whitespace. Well-formatted code is significantly easier to read, debug, and maintain.
  3. Organized Import Statements: Structure import statements logically by grouping related packages and alphabetizing within those groups. Avoid wildcard imports to ensure clarity about class origins and prevent namespace conflicts.
  4. Effective Documentation: Strive for self-documenting code. For public APIs, complex algorithms, non-obvious business logic, or any part of the code that isn't immediately clear, provide comprehensive Javadoc. Good documentation aids understanding, usage, and maintenance.
  5. Robust and Secure Error Handling: Implement thorough error and exception handling with a strong focus on security. This includes using specific exceptions, managing resources diligently (preferably with try-with-resources), preventing the leakage of sensitive information in logs or error messages, and never "swallowing" exceptions without proper handling or justification. Resilient and secure applications depend on robust error management.

Read the full file on GitHub · 545 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 545 lines · 5,375 tokens per session scan A a26c1b8a714f

Subscribe to this mod's changes

113-java-general-guidelines is a cursor rule published in the GitHub repository alkoleft/platform-context-exporter (48 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 5,375 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.