《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现

Everything you need to know to get the job.

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

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

A scalable web crawler framework for Java.

OkGo - 3.0 震撼来袭，该库是基于 Http 协议，封装了 OkHttp 的网络请求框架，比 Retrofit 更简单易用，支持 RxJava，RxJava2，支持自定义缓存，支持批量断点下载管理和批量上传管理功能

Apache Storm

ansj分词.ict的真正java实现.分词效果速度都超过开源版的ict. 中文分词,人名识别,词性标注,用户自定义词典

Apache IoTDB

Dubbox now means Dubbo eXtensions, and it adds features like RESTful remoting, Kyro/FST serialization, etc to the Dubbo service framework.

Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.

Example code from Learning Spark book

Enterprise Stream Process Engine

JAVA WEB + ORM Framework

A cluster computing framework for processing large-scale geospatial data

The JTS Topology Suite is a Java library for creating and manipulating vector geometry.

JDK源码阅读笔记

开源OA

LocationTech Spatial4j: A Geospatial Library for Java

The MongoDB Spark Connector

Spring Hadoop Samples

低代码，在线表单，工作流程，智能报表，大屏设计，应用设计，自动化运维，数据治理，商业智能，任务编排。

Java port of the Proj.4 library for coordinate reprojection

Open Source Java enterprise application for storing, searching and retrieving data

JDK源码的自定义注释版本

JTS类库使用说明，具体结合GIS基础理论与示例代码详细介绍JTS下面核心包下面的geometry、coordinate、wkb、wkt底层代码等操作使用说明

geotools从入门到简单使用教程

Spatial4j使用说明，spatial4j是一款java编写的空间计算开源库，支持ASL开源协议，支持地理空间计算。