Most popular java repositories and open source projects

Java was originally developed as an alternative to the C/C++ programming languages. It is now mainly used for building desktop, Android, and web server applications. Java is owned and licensed through Oracle.

android

📱 Nextcloud Android app

1810   4477   4477  

objectbox-java

Android Database - first and fast, lightweight on-device vector databa...

309   4472   4472  

Infinity-For-Reddit

A Reddit client for Android

422   4470   4470  

opengrok

OpenGrok is a fast and usable source code search and cross reference e...

763   4468   4468  

mianshiya

持续维护的企业面试题库网站，帮你拿到满意 offer！⭐️ 2025年最新Java面试...

1139   4433   4433  

JDA

Java wrapper for the popular chat & VOIP service: Discord https://disc...

741   4430   4430  

mall4j

⭐️⭐️⭐️ 电商商城 小程序电商商城系统 PC商城 H5商城 APP商城 Java商城 O...

1199   4398   4398  

mapbox-gl-native

Interactive, thoroughly customizable maps in native Android, iOS, macO...

1323   4388   4388  

JavaCollection

Java开源项目之「自学编程之路」：学习指南+面试指南+资源分享+技术文章

717   4374   4374  

lucene-solr

Apache Lucene and Solr open-source search software

2650   4372   4372  

WePush

专注批量推送的小而美的工具，目前支持：模板消息-公众号、模板消息-小程序...

997   4364   4364  

leet-code

Java Solutions to problems on LintCode/LeetCode

24   4359   4359  

shiro

Apache Shiro

2310   4357   4357  

djl

An Engine-Agnostic Deep Learning Framework in Java

686   4351   4351  

h2database

H2 is an embeddable RDBMS written in Java.

1235   4298   4298  

jacoco

:microscope: Java Code Coverage Library

1161   4289   4289  

java-learning

旨在打造在线最佳的 Java 学习笔记，含博客讲解和源码实例，包括 Java SE...

1209   4263   4263  

awesome-wasm-langs

😎 A curated list of languages that compile directly to or have their...

200   4254   4254  

dragonwell8

Alibaba Dragonwell8 JDK

495   4245   4245  

failsafe

Fault tolerance and resilience patterns for the JVM

297   4228   4228  

JimuReport

⭐️「低代码可视化报表」类似excel操作风格，在线拖拽完成设计！功能涵盖:...

1300   4214   4214  

dynamic-tp

🔥🔥🔥轻量级动态线程池，内置监控告警功能，集成三方中间件线程池管理，基...

834   4214   4214  

Conversations

Conversations is an open source XMPP/Jabber client for Android

1248   4196   4196  

jitsi

Jitsi is an audio/video and chat communicator that supports protocols...

978   4189   4189  

spring-boot-starter

MyBatis integration with Spring Boot

1793   4186   4186  

camunda-bpm-platform

C7 CE enters EOL in October 2025. Please check out C8 https://github.c...

1602   4185   4185  

powermock

PowerMock is a Java framework that allows you to unit test code normal...

587   4179   4179  

vimspector

vimspector - A multi-language debugging system for Vim

175   4178   4178  

javassist

Java bytecode engineering toolkit

710   4164   4164  

open-location-code

Open Location Code is a library to generate short codes, called "plus...

488   4162   4162  

aws-sdk-java

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on...

2824   4149   4149  

kaitai_struct

Kaitai Struct: declarative language to generate binary data parsers in...

198   4096   4096  

drozer

The Leading Security Assessment Framework for Android.

793   4085   4085  

jodd

Jodd! Lightweight. Java. Zero dependencies. Use what you like.

724   4060   4060  

bistoury

Bistoury是去哪儿网的java应用生产问题诊断工具，提供了一站式的问题诊断方...

830   4056   4056  

java-developer-roadmap

Roadmap to becoming a Java developer in 2025

548   4047   4047  

chunjun

A data integration framework

1699   4030   4030  

spring-ai

An Application Framework for AI Engineering

1081   4026   4026  

Phoenix

Phoenix Pull-to-Refresh

916   4001   4001  

geoserver

Official GeoServer repository

2202   3982   3982  

tech-weekly

「小马哥技术周报」

711   3959   3959  

fastjson2

🚄 FASTJSON2 is a Java JSON library with excellent performance.

516   3951   3951  

interviewGuide

推荐免费ChatGPT网站：https://www.lintcode.com/chat-gpt?utm_source=tf-g...

683   3944   3944  

Developer-Books

编程开发相关书单列表整理

1442   3940   3940  

Aliucord

A modification for the Discord Android App

172   3925   3925  

jmonkeyengine

A complete 3-D game development suite written in Java.

1131   3918   3918  

lac

百度NLP：分词，词性标注，命名实体识别，词重要性

595   3909   3909  

jetty.project

Eclipse Jetty® - Web Container & Clients - supports HTTP/2, HTTP/1.1,...

1935   3898   3898  

awaitility

Awaitility is a small Java DSL for synchronizing asynchronous operatio...

245   3879   3879  

Leetcode

Solutions to LeetCode problems; updated daily. Subscribe to my YouTube...

1296   3875   3875