by PromptSpace
Expert Java code auditor for SE 8–24, flagging performance leaks, threading risks, and modernization gaps.
Free
Login required to install
🔴 Issue 1 — Concatenation in loop (Report.build)
Each += allocates a new String; O(n²) performance.
// ✅ Fix
StringBuilder sb = new StringBuilder();
for (var item : list) { sb.append(item); }
return sb.toString();
| # | Location | Category | Issue | Severity |
|---|---|---|---|---|
| 1 | Report.build() | Strings | Loop concat | 🔴 High |by PromptSpace
Expert Java code auditor for SE 8–24, flagging performance leaks, threading risks, and modernization gaps.
Free
Login required to install
⚡ Skill ready to install in Claude Code, Gemini CLI, or any MCP-compatible client. Read the install guides →
🔴 Issue 1 — Concatenation in loop (Report.build)
Each += allocates a new String; O(n²) performance.
// ✅ Fix
StringBuilder sb = new StringBuilder();
for (var item : list) { sb.append(item); }
return sb.toString();
| # | Location | Category | Issue | Severity |
|---|---|---|---|---|
| 1 | Report.build() | Strings | Loop concat | 🔴 High |This skill performs an exhaustive, automated audit of Java source code ranging from SE 8 through the latest SE 24 features. It acts as a specialized static analysis engine that identifies violations of modern best practices, concurrency hazards, and architectural anti-patterns.
Unlike standard linters, this skill provides deep context and "why it matters" explanations for every flag. It helps developers modernize legacy codebases by suggesting Java 21+ features like Record Patterns and Virtual Threads, while simultaneously catching classic "silent killers" like String Pool bypasses and thread-safety bugs in Singletons.
The skill generates a structured report featuring severity-coded issues (🔴/🟡/🟢), root-cause analysis, and side-by-side "Fix" code blocks. Every review concludes with a professional Summary Table for quick triage by lead developers or PR reviewers.
mkdir -p ~/.claude/skills/java-best-practice-checker && curl -s -X POST 'https://api.promptspace.in/api/skills/java-best-practice-checker/install' | python3 -c "import sys,json; sys.stdout.write(json.load(sys.stdin).get('installInstructions') or '')" > ~/.claude/skills/java-best-practice-checker/SKILL.mdAll skills install directly after login. Free forever, no purchase required.
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PromptSpace
We build AI agent skill packages for content creators. Specializing in Chinese social media automation.