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### 1.JavaGuide
Guide å¥å¤§ä¸å¼å§ç»´æ¤çï¼ç®åç®æ¯çº¯ Java ç±»å项ç®ä¸ Star æ°éæå¤ç项ç®äºã使¯ï¼æ¬ä»åºçä»·å¼è¿è¿ï¼+N次 ï¼æ¯ä¸ä¸å Spring BootãElasticsearch ççè¿æ ·é常é常é常ä¼ç§ç项ç®ã叿以åæä¹æè½å为è¿äºé¡¹ç®è´¡ç®ä¸äºæä»·å¼ç代ç ã
- **Github å°å**ï¼
- **Star**: 66.3k
- **ä»ç»**: ãJava å¦ä¹ +é¢è¯æåã ä¸ä»½æ¶µç大é¨å Java ç¨åºåæéè¦ææ¡çæ ¸å¿ç¥è¯ã
### 2.java-design-patterns
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> è®¾è®¡æ¨¡å¼æ¯ç¨åºåå¨è®¾è®¡åºç¨ç¨åºæç³»ç»æ¶å¯ä»¥ç¨æ¥è§£å³å¸¸è§é®é¢çæä½³å½¢å¼åå®è·µã 设计模å¼å¯ä»¥éè¿æä¾ç»è¿æµè¯çï¼ç»è¿éªè¯çå¼åè便¥å å¿«å¼åè¿ç¨ã éç¨è®¾è®¡æ¨¡å¼æå©äºé²æ¢å¼èµ·é大é®é¢çç»å¾®é®é¢ï¼å¹¶ä¸è¿å¯ä»¥æé«çææ¨¡å¼çç¼ç 人ååæ¶æå¸ç代ç å¯è¯»æ§ã

- **Github å°å** : [https://github.com/iluwatar/java-design-patterns](https://github.com/iluwatar/java-design-patterns)
- **Star**: 53.8k
- **ä»ç»**: ç¨ Java å®ç°ç设计模å¼ã[https://java-design-patterns.com](https://java-design-patterns.com/)ã
### 3.elasticsearch
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- **Github å°å** : [https://github.com/elastic/elasticsearch](https://github.com/elastic/elasticsearch)
- **Star**: 46.2k
- **ä»ç»**: 弿ºï¼åå¸å¼ï¼RESTful æç´¢å¼æã
### 4.spring-boot
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- **Githubå°å**ï¼ [https://github.com/spring-projects/spring-boot](https://github.com/spring-projects/spring-boot)
- **star:** 34.8k (1,073 stars this month)
- **ä»ç»**ï¼ è½ç¶Springçç»ä»¶ä»£ç æ¯è½»é级çï¼ä½å®çé
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### 5.RxJava
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- **Github å°å** : [https://github.com/ReactiveX/RxJava](https://github.com/ReactiveX/RxJava)
- **Star**: 41.5k
- **ä»ç»**: `RxJava` æ¯ä¸ä¸ª åºäºäºä»¶æµãå®ç°å¼æ¥æä½çåºã
### 6.advanced-java
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- **Github å°å**ï¼[https://github.com/doocs/advanced-java](https://github.com/doocs/advanced-java)
- **Star**: 36.7k
- **ä»ç»**: äºèç½ Java å·¥ç¨å¸è¿é¶ç¥è¯å®å
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### 7.mall
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- **Githubå°å**ï¼ [https://github.com/macrozheng/mall](https://github.com/macrozheng/mall)
- **star**: 27.6k
- **ä»ç»**: mallé¡¹ç®æ¯ä¸å¥çµåç³»ç»ï¼å
æ¬åå°ååç³»ç»ååå°ç®¡çç³»ç»ï¼åºäºSpringBoot+MyBatiså®ç°ã åå°ååç³»ç»å
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### 8.okhttp
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- **Githubå°å**ï¼[https://github.com/square/okhttp](https://github.com/square/okhttp)
- **star**: 35.4k
- **ä»ç»**: éç¨äºAndroidï¼KotlinåJavaçHTTP客æ·ç«¯ãhttps://square.github.io/okhttp/ã
### 9.guava
å¾å害å¾åå®³ï¼æä¾äºå¾å¤é常å®ç¨çå·¥å
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- **Githubå°å**ï¼[https://github.com/google/guava](https://github.com/google/guava)
- **star**: 35.3k
- **ä»ç»**: Guavaæ¯ä¸ç»æ ¸å¿åºï¼å
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### 10.Spark
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- **Githubå°å**ï¼[https://github.com/apache/spark](https://github.com/apache/spark)
- **star**: 24.7k
- **ä»ç»**: Spark æ¯ä¸ä¸ªå¿«éãéç¨çå¤§è§æ¨¡æ°æ®å¤ç弿ï¼åHadoopçMapReduceè®¡ç®æ¡æ¶ç±»ä¼¼ï¼ä½æ¯ç¸å¯¹äºMapReduceï¼Sparkååå
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### 11.arthas
è½ç¶æèªå·±æ²¡æäº²èº«ç¨è¿ï¼ä½æ¯èº«è¾¹ç¨è¿çæåè¯ä»·é½è¿æºå¥½çãæ ¹æ®å®ç½ä»ç»ï¼è¿å®¶ä¼å¯ä»¥è§£å³ä¸é¢è¿äºè®©äººè壳ç¼çé®é¢ï¼
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4. 线ä¸éå°æä¸ªç¨æ·çæ°æ®å¤çæé®é¢ï¼ä½çº¿ä¸åæ ·æ æ³ debugï¼çº¿ä¸æ æ³éç°ï¼
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7. æä¹å¿«éå®ä½åºç¨ççç¹ï¼çæç«ç°å¾ï¼
- **Github å°å**ï¼[https://github.com/alibaba/arthas](https://github.com/alibaba/arthas)
- **star**: 18.8 k
- **ä»ç»**: Arthas æ¯ Alibaba 弿ºç Java è¯æå·¥å
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### 12.spring-boot-examples
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å䏿ç **springboot-guide** ï¼[https://github.com/Snailclimb/springboot-guide](https://github.com/Snailclimb/springboot-guide)ï¼æææ æ æ»´ï¼
- **Github å°å**ï¼[https://github.com/ityouknow/spring-boot-examples](https://github.com/ityouknow/spring-boot-examples)
- **star**: 20.2 k
- **ä»ç»**: Spring Boot æç¨ãææ¯æ 示ä¾ä»£ç ï¼å¿«éç®å䏿æç¨ã
### 13.lombok
ä½¿ç¨ Lombok æä»¬å¯ä»¥ç®åæä»¬ç Java 代ç ï¼æ¯å¦ä½¿ç¨å®ä¹åæä»¬éè¿æ³¨éå°±å¯ä»¥å®ç° getter/setterãequalsçæ¹æ³ã
- **Github å°å**ï¼[https://github.com/rzwitserloot/lombok](https://github.com/rzwitserloot/lombok)
- **star**: 20.2 k
- **ä»ç»**: 对 Java ç¼ç¨è¯è¨çéå¸¸åºæ¿çè¡¥å
ã[https://projectlombok.org/](https://projectlombok.org/) ã
### 14.p3c
䏿èè¨ï¼æ²¡æç¹å«æè³ï¼ä½æ¯ä¸äºæä¾çä¸äºä»£ç è§èç¡®å®æºæç¨çï¼
- **Github å°å**ï¼[https://github.com/alibaba/p3c](https://github.com/alibaba/p3c)
- **star**: 19.8 k
- **ä»ç»**: é¿éå·´å·´Javaç¼ç æåpmdå®ç°åIDEæä»¶ã
### 15.spring-boot-demo
- **Github å°å**ï¼[https://github.com/xkcoding/spring-boot-demo](https://github.com/xkcoding/spring-boot-demo)
- **Star**: 8.8k
- **ä»ç»**: spring boot demo æ¯ä¸ä¸ªç¨æ¥æ·±åº¦å¦ä¹ 并宿 spring boot ç项ç®ã
### 16. awesome-java
Guide å¥åä¸ªå¤æåå¼å§ç»´æ¤çï¼è½ç¶ç°å¨ Star æ°éæ¯è¾å°ï¼æç¸ä¿¡åé¢ä¸å®ä¼ææ´å¤äººå欢ä¸è¿ä¸ªé¡¹ç®ï¼æä¹ä¼ç»§ç»è®¤çç»´æ¤ä¸å»ã
- **Github å°å**ï¼[https://github.com/Snailclimb/awesome-java](https://github.com/Snailclimb/awesome-java)
- **Star**: 0.3 k
- **ä»ç»**: Github ä¸é常æ£ç Java 弿ºé¡¹ç®éåã