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

Getting Started with Spring Boot 3:

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

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

A Java serialization/deserialization library to convert Java Objects into JSON and back

Android Transition animations explanation with examples.

Very spicy additions to the Java programming language.

Open-Source Web UI for Apache Kafka Management

Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly co…

Lifecycle handling APIs for Android apps using RxJava

Java DSL for easy testing of REST services

Kafka Web UI

Barcode scanner library for Android, based on the ZXing decoder

A Material design back port of Android's CalendarView

Main Liquibase Source

An extensible multilanguage static code analyzer.

RxJava 2 Android Examples - How to use RxJava 2 in Android

MockServer enables easy mocking of any system you integrate with via HTTP or HTTPS with clients written in Java, JavaScript and Ruby. MockServer also includes a proxy that introspects all proxied t…

Listen to current network traffic in the app and categorize the quality of the network.

Simple to use root checking Android library and sample app

https://start.spring.io

Java (and original) version of Hamcrest

An extensive tutorial on RxJava

YAS: Yet Another Shop, a sample microservices project in Java

Clean Architecture Example (Java): Example of what clean architecture would look like (in Java)

A library that creates fully populated objects for your unit tests.

Generate and read big Excel files quickly

Mirror of Apache Velocity Engine

JXLS2 demo for issue 85