# singgel/JAVA

存放JAVA开发的设计思想、算法：《剑指Offer》、《编程珠玑》、《深入理解Java虚拟机：JVM高级特性与最佳实践》、《重构-改善既有代码的设计 中文版》、《clean_code(中文完整版)》、《Java编程思想(第4版)》、《Java核心技术 卷I (第8版)》、《Quartz_Job+Scheduling_Framework》；一些大的上传不上来的文件在README

Repository: https://github.com/singgel/JAVA
Canonical: https://ross.abutalabs.com/products/singgel-java
License Family: other
Last push: 2026-04-07T10:35:02+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 76, release rhythm 35, longevity 100
- inputs: {"age_days": 3318, "days_push": 148, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6655, forks 2061 (observed 2026-08-28T04:09:47.411411+00:00)

## What it is
A curated repository of Java development learning materials, including classic books like 'Coding Interviews (Jian Zhi Offer)', 'Understanding the JVM', 'Clean Code', and 'Thinking in Java', mostly as PDFs with links to CSDN downloads. It serves as a reference collection for Java design principles, algorithms, concurrency, and framework internals.

## Use cases
- find Java books like Thinking in Java or Effective Java as PDFs
- prepare for Java coding interviews with Jian Zhi Offer algorithms
- learn JVM internals and tuning from Understanding the JVM
- study Java concurrency and multithreading programming
- read Spring source code analysis and architecture materials
- learn distributed consistency with ZooKeeper and Paxos

## When to choose
- you want a one-stop collection of classic Java engineering books
- you are preparing for Java interviews or deepening JVM knowledge
- you prefer offline PDF reading materials over interactive courses

## When to avoid
- you need runnable code examples or a maintained library
- you require properly licensed or legally distributed book copies
- you want up-to-date materials covering modern Java versions

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools, documentation
- domain: developer-tools, tutorials, programming-languages
- platform: jvm, cross-platform
- tags: java, ebooks, algorithms, jvm, interview-preparation, book-collection, pdf

## Member repositories
- singgel/JAVA (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:47.411411+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:43:06.869345+00:00, confidence not recorded.
  - readme: https://github.com/singgel/JAVA (fetched 2026-08-28T04:09:47.411411+00:00, sha 8e579f0aead6)
- Data as of 2026-08-30T08:39:29.467469+00:00.