Java

Java was originally developed as an alternative to the C/C++ programming languages. It is now mainly used for building web, desktop, mobile, and embedded applications. Java is owned and licensed through Oracle, with free and open source implementations available from Oracle and other vendors.

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Created by James Gosling
Released May 23, 1995

Repositories 85,052

CyC2018 / CS-Notes

74.9k

📚 Tech Interview Guide 技术面试必备基础知识、Leetcode 题解、Java、C++、Python、后端面试、操作系统、计算机网络、系统设计

algorithm leetcode interview computer-science system-design java python cpp

Java Updated Aug 21, 2019

Snailclimb / JavaGuide

52.1k

【Java学习+面试指南】一份涵盖大部分Java程序员所需要掌握的核心知识。

java jvm interview redis spring mysql zookeeper algorithms system system-design

Java Updated Aug 21, 2019

iluwatar / java-design-patterns

50.7k

Design patterns implemented in Java

java principles design-patterns awesome-list snippets snippets-collection snippets-library

Good first issues

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good first issue bug

#915 opened Jul 30, 2019 by iluwatar

good first issue bug

#895 opened Jul 6, 2019 by lebel-louisjacob

good first issue technical

#819 opened Nov 4, 2018 by iluwatar

Java Updated Aug 11, 2019

elastic / elasticsearch

43.5k

Open Source, Distributed, RESTful Search Engine

elasticsearch java search-engine

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good first issue :Core/Features/Watcher

#45169 opened Aug 3, 2019 by CameronNemo

good first issue :Core/Features/Java High Level REST Client

#44493 opened Jul 17, 2019 by domer-sz

good first issue :Analytics/Aggregations

#44290 opened Jul 12, 2019 by polyfractal

Java Updated Aug 21, 2019

spring-projects / spring-boot

41.1k

Spring Boot

java spring-boot spring framework

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type: documentation

#17856 opened Aug 13, 2019 by epiwd

type: documentation

#17851 opened Aug 13, 2019 by snicoll

type: documentation

#17814 opened Aug 8, 2019 by caspianb

Java Updated Aug 21, 2019

ReactiveX / RxJava

40.2k

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observ…

java rxjava flow reactive-streams

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Documentation 3.x

#6515 opened Jun 19, 2019 by akarnokd

Documentation 2.x

#6132 opened Aug 3, 2018 by akarnokd

Documentation 2.x

#5813 opened Jan 17, 2018 by akarnokd

Java Updated Aug 21, 2019

kdn251 / interviews

38.2k

Everything you need to know to get the job.

Java Updated Aug 15, 2019

square / okhttp

34k

An HTTP client for Android, Kotlin, and Java.

java android kotlin

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documentation

#5206 opened Jun 20, 2019 by yschimke

documentation

#4637 opened Feb 19, 2019 by swankjesse

documentation

#4370 opened Nov 5, 2018 by uce

Java Updated Aug 21, 2019

square / retrofit

33.4k

Type-safe HTTP client for Android and Java by Square, Inc.

java android

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Documentation

#2954 opened Nov 13, 2018 by beigirad

Documentation

#2950 opened Nov 12, 2018 by Malachiasz

Documentation

#2929 opened Oct 18, 2018 by paourissi

Java Updated Aug 7, 2019

google / guava

33.3k

Google core libraries for Java

guava java

Java Updated Aug 21, 2019

doocs / advanced-java

28.3k

😮 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务等领域知识，后端同学必看，前端同学也可学习

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good first issue

#70 opened May 27, 2019 by yanglbme

good first issue help wanted

#61 opened Apr 15, 2019 by yanglbme

good first issue notice

#44 opened Feb 21, 2019 by yanglbme

Java Updated Aug 19, 2019

PhilJay / MPAndroidChart

28.2k

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick chart…

java chart graph android mpandroidchart

Java Updated Aug 19, 2019

square / leakcanary

23.4k

LeakCanary is a memory leak detection library for Android.

android memory-leak java kotlin kotlin-android outofmemory outofmemoryerror

Good first issues

type: documentation

#1530 opened Aug 12, 2019 by hmcgreevy-instil

type: documentation status: help wanted

#54 opened May 11, 2015 by pyricau

Kotlin Updated Aug 17, 2019

zxing / zxing

23.4k

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

java android barcode barcode-scanner zxing qr-code datamatrix upc

Java Updated Jul 29, 2019

apache / spark

23.1k

Apache Spark

python scala r java big-data jdbc sql spark

Scala Updated Aug 21, 2019

crossoverJie / JCSprout

22.1k

👨‍🎓 Java Core Sprout : basic, concurrent, algorithm

java concurrent-programming algorithm basic-java netty jvm

Java Updated Jul 19, 2019

macrozheng / mall

20.1k

mall项目是一套电商系统，包括前台商城系统及后台管理系统，基于SpringBoot+MyBatis实现。前台商城系统包含首页门户、商品推荐、商品搜索、商品展示、购物车、订单流程、会员中心、客户服务、帮助中心等模块。后台管理系统包…

spring-boot spring-security mybatis docker swagger-ui mysql redis elasticsearch mongodb elk spring rabbitmq spring-cloud java springcloud springboot

Java Updated Aug 19, 2019

skylot / jadx

19.7k

Dex to Java decompiler

android dex java decompiler

Java Updated Aug 15, 2019

alibaba / fastjson

18.9k

🚄 A fast JSON parser/generator for Java. (Aliyun Data Lake Analytics https://www.aliyun.com/product/datalakeanalytics …

fastjson java android json json-parser json-serialization json-serializer serialization deserialization best-performance

Java Updated Aug 20, 2019

ityouknow / spring-boot-examples

18k

about learning Spring Boot via examples. Spring Boot 教程、技术栈示例代码，快速简单上手教程。

Java Updated May 18, 2019

microsoft / CNTK

16.3k

Microsoft Cognitive Toolkit (CNTK), an open source deep-learning toolkit

cognitive-toolkit cntk deep-learning machine-learning deep-neural-networks neural-network distributed python c-plus-plus c-sharp java

C++ Updated Aug 6, 2019

TheAlgorithms / Java

16.3k

All Algorithms implemented in Java

java algorithms implementation algorithms-implemented algorithms-datastructures algorithm-challenges wiki reference

Java Updated Aug 21, 2019

Wechat-Group / WxJava

16k

WxJava （微信开发 Java SDK），支持包括微信支付、开放平台、小程序、企业微信/企业号和公众号等的后端开发

weixin wechat weixin-sdk wechat-sdk java sdk cp mp wxpay wxjava miniapp miniprogram open weapp

Forked from chanjarster/weixin-java-tools Java Updated Aug 21, 2019

alibaba / arthas

15.8k

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

java agent trace jvm arthas trouble-shooting diagnosis classloader alibaba

Java Updated Aug 21, 2019

libgdx / libgdx

15.8k

Desktop/Android/HTML5/iOS Java game development framework

libgdx java game cross-platform android ios html5 windows linux macosx 2d 3d framework

Good first issues

good first issue bug

#5134 opened Mar 16, 2018 by villain-bryan

good first issue help wanted

#4924 opened Oct 12, 2017 by Dakror

Java Updated Aug 21, 2019

SeleniumHQ / selenium

15.3k

A browser automation framework and ecosystem.

selenium webdriver java ruby python javascript dotnet

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E-easy C-rb

#7404 opened Jul 17, 2019 by titusfortner

E-easy C-rb

#7400 opened Jul 16, 2019 by titusfortner

C-docs C-nodejs

#6219 opened Jul 29, 2018 by motin

Java Updated Aug 21, 2019

jhipster / generator-jhipster

14.5k

Open Source application generator for creating Spring Boot + Angular/React projects in seconds!

angular spring-boot webpack java docker yeoman-generator generator react kubernetes cloud

Good first issues

status: good first issue $$ bug-bounty $$

#9280 opened Feb 17, 2019 by Tcharl

status: good first issue $$ bug-bounty $$

#8143 opened Aug 22, 2018 by dkirrane

status: good first issue $$ bug-bounty $$

#7966 opened Jul 13, 2018 by abhinav910

JavaScript Updated Aug 21, 2019

google / ExoPlayer

13.8k

An extensible media player for Android

android mediaplayer java exoplayer

Java Updated Aug 20, 2019

android10 / Android-CleanArchitecture

13.7k

This is a sample app that is part of a series of blog posts I have written about how to architect an android applicat…

android-cleanarchitecture architectural java android-application android android-development android-architecture

Java Updated Jul 18, 2019

jenkinsci / jenkins

13.7k

Jenkins automation server

continuous-integration continuous-delivery continuous-deployment java groovy jenkins pipelines-as-code devops hacktoberfest cicd

Java Updated Aug 21, 2019

Learn about java

Website: www.oracle.com/technetwork/java/javase/overview/index.html
Wikipedia: Wikipedia

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2018	2019	2020

Java

Repositories 85,052

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