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Starred repositories

88 stars written in Java
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Design patterns implemented in Java

Java 93,958 27,377 Updated Mar 20, 2026

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

Java 80,516 41,900 Updated Apr 28, 2026

Everything you need to know to get the job.

Java 64,946 12,908 Updated May 12, 2025

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

Java 38,214 9,000 Updated Jun 5, 2025

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

Java 36,793 7,953 Updated Feb 16, 2026

🔥 Android developers should collect the following utils(updating).

Java 33,686 10,662 Updated Aug 15, 2024

Jenkins automation server

Java 25,240 9,464 Updated Apr 28, 2026

Learn Low Level Design (LLD) and prepare for interviews using free resources.

Java 23,646 5,783 Updated Feb 26, 2026

JDK main-line development https://openjdk.org/projects/jdk

Java 22,821 6,317 Updated Apr 28, 2026

IntelliJ IDEA & IntelliJ Platform

Java 20,034 5,812 Updated Apr 28, 2026

Modular and customizable Material Design UI components for Android

Java 17,270 3,232 Updated Apr 28, 2026

Awesome LeetCode resources to learn Data Structures and Algorithms and prepare for Coding Interviews.

Java 16,325 3,478 Updated Apr 25, 2026

Quarkus: Supersonic Subatomic Java.

Java 15,643 3,146 Updated Apr 28, 2026

Most popular Mocking framework for unit tests written in Java

Java 15,432 2,655 Updated Apr 16, 2026

A circular ImageView for Android

Java 14,522 3,089 Updated May 3, 2024

Realm is a mobile database: a replacement for SQLite & ORMs

Java 11,478 1,752 Updated Sep 15, 2025

Charts library for Android compatible with API 8+, several chart types with scaling, scrolling and animations 📊

Java 7,625 1,599 Updated Jun 1, 2021

Java implementation of JSON Web Token (JWT)

Java 6,219 948 Updated Apr 27, 2026

Apache Camel is an open source integration framework that empowers you to quickly and easily integrate various systems consuming or producing data.

Java 6,195 5,096 Updated Apr 28, 2026

An implementation of tap targets from the Material Design guidelines for feature discovery.

Java 5,462 592 Updated Oct 8, 2024

Joda-Time is the widely used replacement for the Java date and time classes prior to Java SE 8.

Java 4,985 1,018 Updated Apr 28, 2026

An Engine-Agnostic Deep Learning Framework in Java

Java 4,805 745 Updated Apr 28, 2026

Open Source Web Crawler for Java

Java 4,624 1,908 Updated Nov 4, 2021

Algorithms and Data Structures implemented in Java

Java 4,529 1,846 Updated Dec 5, 2022

OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.

Java 4,258 696 Updated Apr 18, 2026

Java bytecode engineering toolkit

Java 4,225 720 Updated Apr 19, 2026

ViewPager cards inspired by Duolingo

Java 4,068 605 Updated Mar 10, 2026

Fast and versatile Adapter for RecyclerView which regroups several features into one library to considerably improve the user experience :-)

Java 3,571 554 Updated Mar 14, 2026

Automated mass refactoring of source code.

Java 3,436 519 Updated Apr 28, 2026

The official repository for Developing Android Apps

Java 2,857 4,313 Updated Jun 23, 2022
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