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the most-starred Java repositories on github, all time. live from the source.

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NationalSecurityAgency/ghidra

Ghidra is a software reverse engineering (SRE) framework

iluwatar/java-design-patterns

Design patterns implemented in Java

macrozheng/mall

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Spring Boot+MyBatis实现，采用Docker容器化部署。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。后台管理系统包含商品管理、订单管理、会员管理、促销管理、运营管理、内容管理、统计报表、财务管理、权限管理、设置等模块。

spring-projects/spring-boot

Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

doocs/advanced-java

😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 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、海量数据处理等领域知识

elastic/elasticsearch

Free and Open Source, Distributed, RESTful Search Engine

MisterBooo/LeetCodeAnimation

Demonstrate all the questions on LeetCode in the form of animation.（用动画的形式呈现解LeetCode题目的思路,完整单步/回看/变速/语音讲解在 algomooc.com）

TheAlgorithms/Java

All Algorithms implemented in Java

kdn251/interviews

Everything you need to know to get the job.

termux/termux-app

Termux - a terminal emulator application for Android OS extendible by variety of packages.

spring-projects/spring-framework

Spring Framework

dbeaver/dbeaver

Free universal database tool and SQL client

google/guava

Google core libraries for Java

skylot/jadx

Dex to Java decompiler

jeecgboot/JeecgBoot

一款免费开源的 AI 低代码平台，也是 AI 时代构建复杂业务系统的开源基座！权限、多租户、工作流、报表、大屏、AI 知识库等通用能力开箱即用，AI 只需生成业务差异部分。AI Skills 一句话生成完整系统——建表、前后端代码、菜单权限、BPM 流程、表单、报表、大屏全自动。内置 AI 应用平台（聊天、知识库、流程编排、MCP），兼容主流大模型

ReactiveX/RxJava

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

lysine-dev/retrofit

A type-safe HTTP client for Android and the JVM

ashishps1/awesome-system-design-resources

Learn System Design concepts and prepare for interviews using free resources.

apache/dubbo

The java implementation of Apache Dubbo. An RPC and microservice framework.

TeamNewPipe/NewPipe

A libre lightweight streaming front-end for Android.

YunaiV/ruoyi-vue-pro

🔥 官方推荐 🔥 RuoYi-Vue 全新 Pro 版本，优化重构所有功能。基于 Spring Boot + MyBatis Plus + Vue & Element 实现的后台管理系统 + 微信小程序，支持 RBAC 动态权限、数据权限、SaaS 多租户、Flowable 工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。你的 ⭐️ Star ⭐️，是作者生发的动力！

halo-dev/halo

Halo 是一款强大易用的开源建站工具，从个人博客、知识库，到企业官网、在线商城，Halo 都能助您轻松实现，一站式满足您的多样化建站需求。

keycloak/keycloak

Open Source Identity and Access Management For Modern Applications and Services

alibaba/arthas

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

eugenp/tutorials

Getting Started with Spring Boot 3:

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