An open API service indexing awesome lists of open source software.

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.

https://github.com/ere-health/ere-ps-app

ERE Primary System Desktop Client Application of the Gematik TI

eprescription healthcare java quarkus

Last synced: 12 Apr 2025

https://github.com/ehsaniara/spring-boot-multi-data-source

:rocket: Spring Boot 2.2.2 with Multiple DataSource for Postgres Data Replication

datasource datasource-read java multiple-da postgresql spring-boot

Last synced: 06 Mar 2026

https://github.com/michaelbull/rs-api

An open-source implementation of a web-service client, written in Java, that allows interaction with the various APIs available for the popular MMORPG; RuneScape.

api client java runescape

Last synced: 10 Jul 2025

https://github.com/simonscholz/qr-code-with-logo

Create a highly customizable QR code with optional Logo in Kotlin or Java

awt-graphics java kotlin library logo maven-central qr qrcode qrcode-generator svg

Last synced: 18 Jul 2025

https://github.com/zaahidali/atm-management-system

A semester project completed in Java Programming language

atm atm-management-system java java-programming java-project semester-project

Last synced: 21 Apr 2025

https://github.com/igniterealtime/whack

Open Source XMPP component library for XMPP components

jabber java xmpp-components

Last synced: 08 Apr 2025

https://github.com/sing-group/gc4s

GUI Components for (Java) Swing

gui gui-components java library swing

Last synced: 03 Jul 2025

https://github.com/pakoito/rxsealedunions2

Compile-time checked Unions of different types for Domain Modeling [STABLE]

functional-programming java rxjava2

Last synced: 14 Apr 2025

https://github.com/commercetools/commercetools-sync-java

Java library for importing and syncing (taking care of changes) data into one or more commercetools projects from external data files or from another commercetools project.

commercetools commercetools-importer commercetools-sdk commercetools-sync ecommerce hacktoberfest import-and-export java sdk sync

Last synced: 06 Apr 2025

https://github.com/godcrampy/fireflydb

FireflyDB is a fast, thread-safe, JVM-based key-value storage engine with microsecond latency.

database java storage-engine

Last synced: 17 Jan 2026

https://github.com/comcast/oscar

OSCAR - OpenSource Cablemodem file AssembleR - DOCSIS, PacketCable, DPoE Configuration Editor and API Framework

cable-modem cli configuration-file docsis docsis-editor java snmp tlv

Last synced: 11 Apr 2025

https://github.com/eulery/opentsdb-java-sdk

用Java语言封装了openTSDB的http api

java opentsdb-http

Last synced: 14 Jan 2026

https://github.com/a2ap/a2a4j

A2A4J is a comprehensive Java implementation of the Agent2Agent Protocol, including server, client, examples, and starters.

a2a a2a-client a2a-protocol a2a-server ai java llm mcp spring springboot

Last synced: 14 Jan 2026

https://github.com/pisces-hub/muchat

Muchat是用JAVA语言开发的轻量、高性能、单机支持几十万至百万在线用户IM,主要目标降低即时通讯门槛,快速打造低成本接入在线IM系统,通过极简洁的消息格式就可以实现多端不同协议间的消息发送如内置(Http、Websocket、Tcp自定义IM协议)

chat im java netty redis springboot tcp zookeeper

Last synced: 12 Apr 2025

https://github.com/dpsoft/ap-agent

Java agent that acts as a proxy to the almighty Async Profiler

async-profiler firefox-profile flamegraph flamescope java performance pprof profiling

Last synced: 17 Jan 2026

https://github.com/eclipse-jnosql/jnosql-extensions

This project contains all specialization to Eclipse JNoSQL. The specific behavior in a NoSQL database matters, that's why there are Eclipse JNoSQL Mapper specializations.

jakartaee java jnosql microprofile

Last synced: 07 Apr 2026

https://github.com/sajdoko/storemanagementsystem

JavaFX application to manage products, sales and customers of an e-commerce store. The application performs basic CRUD (create, read, update, delete) functionalities.

java javafx-application javafx-gui store-management-system

Last synced: 10 Apr 2025

https://github.com/professorjosedeassis/javase

Programação com Java para iniciantes

curso eclipse java javase poo robocode tutorial

Last synced: 10 Apr 2025

https://github.com/calimero-project/calimero-tools

A collection of KNX network tools for device discovery, process communication, and monitoring

cli command-line java knx

Last synced: 09 Apr 2025

https://github.com/zuazo/node-jmx

Node.js library to connect to Java applications through JMX.

java jmx jvm node

Last synced: 30 Apr 2025

https://github.com/ivangfr/springboot-kong-keycloak

Goal: create a Spring Boot app called book-service accessible only through the Kong API gateway. In Kong, the kong-oidc plugin will be installed, enabling communication between Kong and Keycloak. This setup ensures that when Kong receives a request for book-service, it validates the request in conjunction with Keycloak to ensure its authenticity.

docker graalvm java keycloak kong kong-oidc mongodb mysql native postgresql spring-boot spring-data-mongodb spring-web-mvc

Last synced: 10 Apr 2025

https://github.com/ideal/kubernetes-demo

Demo for running services in Kubernetes.

archlinux consul docker hyperf java kubernetes microservice mysql php swoole

Last synced: 30 Apr 2025

https://github.com/vy/rotating-fos

Java library providing rotating/rolling FileOutputStream.

fileoutputstream java

Last synced: 12 Apr 2025

https://github.com/jchambers/id-obfuscator

A Java library for reversibly obfuscating numerical identifiers (e.g. 1234 ↔ 4TQCNTL)

java obfuscation security

Last synced: 26 Mar 2025

https://github.com/mechero/completable-future-example

Example project comparing Java's CompletableFuture and Future implementations

completablefuture future java thepracticaldeveloper

Last synced: 30 Apr 2025

https://github.com/anishlearnstocode/algorithmic-toolbox

Solutions to Coursera course by University of California, San Diego.

algorithms coursera data-structures dynamic-programming java programming python python3 solutions

Last synced: 10 Apr 2025

https://github.com/mukulkolpe/social_media_app

A social media app where users will be able to communicate in public channels as well as personal messages, share stories, share media.

andriod chat-application firebase firebase-auth firebase-database firebase-realtime-database java social-media social-media-app xml

Last synced: 12 Apr 2025

https://github.com/yegor256/hangman

Hangman (the game) written in a very unelegant procedural style, which you can improve in order to test your skills

game hangman-game java oop

Last synced: 07 Apr 2025

https://github.com/moderocky/mirror

A smart, fast alternative to Java's reflection API.

bytecode bytecode-manipulation java reflection reflection-library

Last synced: 23 Mar 2025

https://github.com/metersphere/metersphere-platform-plugin

该项目是 Metersphere 为支持对接第三方平台缺陷与需求(比如Jira、禅道等),所开发的插件项目

java jira metersphere plugin

Last synced: 20 Aug 2025

https://github.com/lujiafa/houtu-admin

Enterprise-level permission management system based on Houtu framework, with frontend-backend separation (Vue 3 + Spring Boot). Supports menu/role/user/organization/position permission control, MFA two-factor authentication, multiple layout modes, and Chinese/English internationalization.

admin-system element-plus enterprise houtu i18n java mfa mybatis-plus permission-management redis spring-boot spring-security vue3

Last synced: 14 Jun 2026

https://github.com/col-e/ll-java-zip

Lower level ZIP support for Java

java zip zipfile

Last synced: 16 Mar 2026

https://github.com/valmobile/realisticsurvival

Realistic Survival - A unique Spigot/Paper plugin inspired by RLCraft that aims to enhance pure survival, adventuring and RPG, and immersion of vanilla Minecraft.

bukkit discord java minecraft modded modded-minecraft modpack mods open-source paper papermc plugin spigot spigotmc survival

Last synced: 14 Mar 2026

https://github.com/professorjosedeassis/javaee

Java WEB Level 1 (Servlet - jsp - JDBC)

crud itextpdf java javaee jdbc jdbc-driver jsp mysql servlet

Last synced: 28 Feb 2026

https://github.com/arun-gupta/lambda-rds-mysql

Shows how to use a Lambda function to store data in an RDS instance

aws database hibernate java lambda mysql rds serverless

Last synced: 25 Oct 2025

https://github.com/didinj/spring-boot-mongodb-react-java-crud

Spring Boot, MongoDB and React.js CRUD Java Web Application Example

application boot crud example java mongo mongodb react reactjs spring spring-boot tutorial web webapp

Last synced: 24 Apr 2025

https://github.com/digitalfondue/mjml4j

Java implementation for MJML - a framework that makes responsive-email easy

email email-boilerplate java mjml responsive responsive-email templating-engine

Last synced: 16 Jan 2026

https://github.com/manticore-projects/jsqlformatter

Java SQL Formatter, Beautifier and Pretty Printer

beautify formatter java mssql mysql oracle postgres pretty-print sql

Last synced: 26 Aug 2025

https://github.com/cronn-de/ssh-proxy

Pure Java implementation for SSH port tunneling that understands ProxyJump and ProxyCommand

java ssh tunnel

Last synced: 19 Mar 2025

https://github.com/gejun123456/bootstrap-java-blog

A blog base on springboot+jquery+bootstrap+lucene+mybatis

blog java lucene springboot

Last synced: 17 Mar 2025

https://github.com/bamless/interpreter

A simple intepreter written in java.

c compiler interpreter java

Last synced: 07 May 2025

https://github.com/kyoripowered/indra

A set of Gradle plugins to apply common organization build settings.

gradle-plugin hacktoberfest java kotlin

Last synced: 06 May 2025

https://github.com/chriy/pighelper

:pig:基于Hybrid+SSM的养猪信息化管理平台,该平台实现了对实时新闻,猪价的爬虫获取,以及各类养殖账单的增删改查等等。该项目适配了移动端界面,最终通过Hybrid混合式App开发技术打包成App,安装在移动端使用

java layui mybatis spring spring-mvc

Last synced: 26 Aug 2025

https://github.com/seunmatt/morsecodetranslator

This is a desktop application that translates English text to Morse code and vice-versa

gui-desktop jar java morse translator tutorial

Last synced: 15 Apr 2025

https://github.com/daichi-m/jach

Briging Golang's channels to Java

golang-channels java

Last synced: 12 Jan 2026

https://github.com/gameofdimension/java-bert-predict

turn bert pretrain checkpoint into saved model for a feature extracting demo in java

bert feature-extraction google-bert java tensorflow

Last synced: 15 Oct 2025

https://github.com/mariazevedo88/artigo-solid-medium

Implementações dos exemplos demonstrados no artigo: https://bit.ly/2o97vY1

artigo exemplos-demonstrados java java-8 medium medium-article solid solid-principles

Last synced: 19 Apr 2025

https://github.com/TAKETODAY/today-web

😐 A Java library for building web applications

framework high-performance java java-web lightweight servlet springmvc

Last synced: 12 May 2025

https://github.com/orienteerbap/wicket-orientdb

Everything you need to work with Apache Wicket and OrientDB

java orientdb orienteer wicket

Last synced: 18 Dec 2025

https://github.com/yihleego/trie4j

📒 An Aho-Corasick algorithm based string-searching utility for Java. It supports tokenization, ignoring case, replacing text. So you can use it to find keywords in an article, filter sensitive words, etc.

aho-corasick go java keywords sensitive stopwords string-searching

Last synced: 15 Jul 2025

https://github.com/porkstudios/porklib

Fast, lightweight libraries for Java. Note: this is very much a work-in-progress, documentation is spotty and the API is changing constantly!

high-performance java library modular

Last synced: 19 Jul 2025

https://github.com/kimkevin/HangulParser

[Java&Android] HangulParser is to parse Hangul to Jaso(basic consonant and vowel) by using Unicode

android hangul java unicode vowel

Last synced: 11 May 2025

https://github.com/dyleaf/wechat

Wechat: 一款使用javafx实现的网络聊天室。

chat emoji java javafx-gui

Last synced: 10 Apr 2025

https://github.com/neo4j/neo4j-java-driver-spring-boot-starter

Automatic configuration of Neo4j's Java Driver for Spring Boot applications

bolt driver java neo4j neo4j-driver spring-boot spring-boot-starter

Last synced: 30 Sep 2025

https://github.com/alexprut/design-patterns-java

📗 Classic OOP Design Patterns from GoF, implemented in Java.

design-patterns gof java oop

Last synced: 30 Apr 2025

https://github.com/ivangfr/spring-data-jpa-r2dbc-mysql-stream-million-records

In this project, we will implement two Spring Boot Java Web application called, streamer-data-jpa and streamer-data-r2dbc. They both will fetch 1 million of customer's data from MySQL and stream them to Kafka. The main goal is to compare the application's performance and resource utilization.

cadvisor docker java jconsole jib kafdrop kafka mysql spring-boot spring-cloud-stream spring-data-jpa spring-data-r2dbc spring-web-mvc spring-webflux

Last synced: 10 Apr 2025

https://github.com/tangorabox/componentinspector

Java Desktop (JavaFX and Swing) Component Inspector on mouse over

component component-inspector desktop inspector java javafx node swing

Last synced: 10 Apr 2025

https://github.com/andy-goryachev/fxeditor

JavaFX rich text editor able to handle billions of lines (WORK IN PROGRESS)

handle-billions java javafx javafx-components javafx-desktop-apps javafx-gui

Last synced: 10 Apr 2025

https://github.com/OrienteerBAP/wicket-orientdb

Everything you need to work with Apache Wicket and OrientDB

java orientdb orienteer wicket

Last synced: 13 Mar 2025

https://github.com/xing/xing-android-sdk

The Official XING API client for Java/Android

android api api-client java moshi oauth xing xing-api

Last synced: 14 Jan 2026

https://github.com/kojofosu/twitterapikit

Twitter's API v2 Objectified. This will save you time from creating data objects to access twitter's API v2. This library is supported on Gradle, Maven, Java, Kotlin, and Android projects.

android api gradle java kotlin maven twitter twitterapi

Last synced: 22 Mar 2025

https://github.com/oeljeklaus-you/loganalyzehelper

论坛日志分析系统清洗程序(包含IP规则库,UDF开发,MapReduce程序,日志数据)

hadoop java

Last synced: 28 Jun 2025

https://github.com/Hangman/TuningFork

Advanced 3D audio features for libGDX desktop users.

audio audio-engine audioengine game-development java libgdx sound sound-effects

Last synced: 01 Apr 2025

https://github.com/taketoday/today-web

😐 A Java library for building web applications

framework high-performance java java-web lightweight servlet springmvc

Last synced: 03 Oct 2025

https://github.com/cicsdev/cics-banking-sample-application-cbsa

CICS® banking sample application

java maven-pom spring-boot

Last synced: 05 Mar 2026

https://github.com/CrazyLeoJay/nginx-gui

Nginx GUI Manager

java springboot2

Last synced: 04 May 2025

https://github.com/pubref/rules_maven

Transitive maven dependencies with Bazel.

bazel gradle java maven transitive-closure

Last synced: 04 Sep 2025

https://github.com/mishmash-io/opentelemetry-server-embedded

OpenTelemetry and logs, metrics, traces, profiles analytics, united by mishmash io.

apache druid java opentelemetry otlp parquet superset vertx

Last synced: 11 Feb 2026

https://github.com/depromeet/14th-team5-be

디프만 14기 개발하다가 5잉~ 금지 SERVER 🖥️

backend java jpa mvc springboot

Last synced: 04 Mar 2026

https://github.com/tsegall/fta

Metadata/data identification Java library. Identifies Semantic Type information (e.g. Gender, Age, Color, Country,...). Extensive country/language support. Extensible via user-defined plugins. Comprehensive Profiling support.

data-discovery data-profiler data-profiling date java metadata semantic-type-detection semantic-typechecking semantic-types

Last synced: 11 May 2026

https://github.com/hexensemble/gb-usb-64m-cart-mac

macOS app for the “GB USB Smart Card 64M” Gameboy cartridge. 💾

cartridges gameboy java macosx

Last synced: 19 Apr 2025

https://github.com/albfernandez/itext2

Java Library to create and manipulate PDF on the fly

java

Last synced: 14 Jan 2026

https://github.com/orienteerbap/vuecket

Power of Vue.JS married with magic of Apache Wicket

java vue vuejs web-framework webfr wicket

Last synced: 05 Oct 2025

https://github.com/brunobonacci/1config

A command line tool and a library to manage application secrets and configuration safely and effectively.

aws aws-lambda clojure configuration configuration-management java security

Last synced: 17 Mar 2025

https://github.com/venwyhk/spring-social-wechat

基于spring-social微信第三方登录实现,支持微信开放平台、微信公众平台和企业微信。

java oauth2 spring-boot spring-social wechat wecom

Last synced: 02 Aug 2025

https://github.com/stevespringett/cvss-calculator

A Java library for calculating CVSSv2 and CVSSv3 scores and vectors

cvss cvssv2 cvssv3 java library nist nvd

Last synced: 06 Apr 2025

https://github.com/idouble/iot-arduino-game-controller-java

🎮 A Game controller realized with an Arduino, I modified the Arduino bootloader to program with Java ☕️

analog arduino arduino-boards arduino-game arduino-library arduino-sketch arduino-uno bootloader cheatsheet controller digital game-controller internet-of-things iot java keyboard mouse

Last synced: 08 Mar 2026

https://github.com/caveofprogramming/spring-framework-course

Source code for the Cave of Programming Spring Framework tutorial

java spring springframework springmvc

Last synced: 29 Oct 2025

https://github.com/bspfsystems/yamlconfiguration

Implementation of SnakeYAML to be easy to use with files.

java

Last synced: 21 Jun 2025