Open Source Java Libraries - Page 38
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Java Libraries
View 75 business solutionsBrowse free open source Java Libraries and projects below. Use the toggles on the left to filter open source Java Libraries by OS, license, language, programming language, and project status.
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Socket.IO-client Java
A Socket.IO client library for Java
This is the Socket.IO Client Library for Java, which is simply ported from the JavaScript client. The latest artifact is available on Maven Central. There are several ways to handle events that are transmitted between the server and the client. Add the listener function to the end of the listeners array for the event named eventName. Add a one-time listener function for the event named eventName. Remove the specified listener from the listener array for the event named eventName. Remove all listeners for the specific eventName. Remove all listeners (for any event). Besides emitting and listening to events, the Socket instance has a few attributes that may be of use in your application. Each new connection is assigned a random 20-characters identifier. -
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A small, easy to learn framework. For rapid application development. No XML, no action, no EJB. Use the power of Java AND the power of your database. Extracted from (comercial) app working in prod for 7 years now (www.clinsis.com). Designed in Spanis
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Sormula
Java ORM
Simple (Easy) Object Relational Mapping for Java Sormula is a Java library that moves data between Java objects and relational database tables. * Easy to Use * Simple to Understand * Minimal Configuration * Portable It provides select, insert, update, and delete, and many other common operations. One-to-one and one-to-many cascading for unlimited levels. Simplified IN operator parameter as java.util.Collection. Custom conversions between any Java class/type and column type. * Works with any relational database. Tested with H2, HSQLDB, Derby, SQLiteJDBC, MySQL, MariaDB, Firebird, DB2, Oracle 11g, PostgreSQL. * Performs as fast as plain JDBC. Performs faster than plain JDBC when caching is enabled. * Zero-configuration, zero-annotation use is possible. * Active record pattern may be used but is not required. Maven <dependency> <groupId>org.sormula</groupId> <artifactId>sormula</artifactId> <version>4.3</version> </dependency> -
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This library provides functionality to check a SF.net RSS feed for the latest file. My Wallpaper Changer uses this lib to check for updates.
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SparkButton
Android library to create buttons with Twitter's heart like animation
A highly customizable and lightweight library that allows you to create a button with an animation effect similar to Twitter's heart animation. -
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SpeedView
Dynamic Speedometer and Gauge for Android. amazing, powerful
Dynamic Speedometer, Gauge for Android. amazing, powerful, and multi-shape, you can change (colors, bar width, shape, text, font, everything), this Library has also been made to build games with accelerate and decelerate, see a project on GitHub. -
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Speedy Composer
Speedy Composer – Artificial Neural Network Melody Composer.
Thank you for your interest in Speedy Composer. Speedy Composer is an automated application for composing melodies for Speedy Net members. We recently made changes to the source code of Speedy Net, and converted it into the Python language and Django framework. Since Speedy Composer was originally written in PHP, it is not adapted to work with Speedy Net in its current form. So unfortunately we were forced to temporarily close the app Speedy Composer. But don't worry, we kept backups of all the tunes composed by Speedy Composer, and when the website is reopened we will upload them to the new site. Speedy Composer and Speedy Net are open source applications, free software. We are currently looking for volunteers to help us convert Speedy Composer to Python. If you are interested in volunteering, please contact me by email. Thank you and good luck, Uri Rodberg Founder and Director of Speedy Net and Speedy Composer, Speedy Paz Technologies Ltd. uri@speedy.net -
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SBAL is a command line tool to launch spring batch. It provides advanced features like displaying the batch version, running resources validations, configuring logging ... It also defines a standard directory structure for deployments
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Spring Cloud Examples
Spring Cloud learning cases, service discovery, service governance
The Spring Cloud Examples repository appears to be a collection of sample applications and demos that illustrate how to use Spring Cloud and related cloud-native patterns in real-world microservice or distributed-service contexts. It provides working codebases showing how to wire together service discovery, configuration, inter-service communication, and possibly resilience patterns — giving developers a hands-on playground rather than theoretical documentation. By studying the examples, one can understand how Spring Cloud works in practice: how to structure services, how to configure them, and how they interact under realistic conditions. For developers new to microservices or to Spring Cloud, this repo lowers the barrier to adoption by offering a ready-made baseline they can inspect, run, and modify. It can also function as a reference when designing architecture for a cloud-native backend, or as a starting point for a new microservices project. -
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Spring Cloud Tutorial
Spring Cloud Basics Tutorial, continuously updated
SpringCloud-Learning is a tutorial repository containing runnable examples for building microservice systems with Spring Cloud. Its code is organized around several framework generations, including Brixton, Dalston, Edgware, and Finchley. The lessons cover service registration, discovery, client communication, distributed configuration, gateways, and fault tolerance. Additional examples explore message-driven services, distributed tracing, monitoring, retries, and API documentation. The repository also includes Spring Cloud Alibaba material for Nacos, Sentinel, and Dubbo integration. It is best suited to Java developers who want practical companion code for studying established Spring Cloud patterns across older release families. -
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Spring Contributions
Some spring-like modules
This project is intented to host a few spring-like modules of my own. -
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Spring Hand Penetration Column
Aims to learn Spring source code and understand principles of Spring
Spring Hand Penetration Column is a hands-on Java learning project that teaches Spring internals by rebuilding a simplified Spring framework step by step. The repository breaks the framework into multiple learning stages so developers can understand each core concept through implementation rather than passive reading. It preserves key Spring ideas such as IoC, AOP, bean lifecycle, application context, scopes, resource loading, annotation configuration, and package scanning. Each step is designed to simplify the original Spring source code while retaining the logic that matters for understanding how the framework works. The project is especially useful for Java developers who find the full Spring source code too large or difficult to approach directly. It also connects implementation details with design patterns and architectural reasoning. -
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Spring PetClinic
A sample Spring-based application
The Spring Petclinic is the canonical reference sample application built with Spring Boot and Thymeleaf, demonstrating best practices in building Spring-based web applications; forks also exist showcasing implementations with modern architectures like microservices, reactive stacks, and AI integrations. In its default configuration, Petclinic uses an in-memory database (H2) which gets populated at startup with data. The h2 console is exposed and it is possible to inspect the content of the database using the jdbc:h2:mem:<uuid> URL. The UUID is printed at startup to the console. One of the best parts about working on the Spring Petclinic application is that we have the opportunity to work in direct contact with many Open Source projects. -
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StickyListHeaders
An android library for section headers that stick to the top
StickyListHeaders is an Android library that makes it easy to integrate section headers in your ListView. These section headers stick to the top like in the new People app of Android 4.0 Ice Cream Sandwich. This behavior is also found in lists with sections on iOS devices. This library can also be used without the sticky functionality if you just want section headers. StickyListHeaders actively supports android versions 2.3 (gingerbread) and above. That said, it works all the way down to 2.1 but is not actively tested or working perfectly. The goal of this project is to deliver a high performance replacement to ListView. You should with minimal effort and time be able to add section headers to a list. This should be done via a simple to use API without any special features. This library will always priorities general use cases over special ones. This means that the library will add very few public methods to the standard ListView and will not try to work for every use case. -
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Stipple Effect
Stipple Effect is a pixel art editor that supports animation
Stipple Effect is a cross-platform pixel art editor that emphasizes scripting and automation. It offers standard raster graphics editing features alongside tools specifically designed for pixel art creation, making it suitable for game developers and digital artists. Its scripting capabilities allow for efficient batch operations and workflow customization. -
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StoriesProgressView
show horizontal progress like instagram stories.
Library that shows horizontal progress like Instagram stories. -
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StoryParser
A set of tools and libraries to help with writing eBooks
A set of tools and libraries (available for C# and Java) that help with writing fiction and non-fiction drafts and then produce ePUB and Kindle eBooks. With these tools/libraries, drafts, written in HTML, can be analyzed to help with writing. such as generating outlines and associating scenes with keywords. When done writing, the tools/libraries can be used to make publishable eBook, automatically producing additional material, such as Table of Contents and Title Pages. -
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StrongKey CryptoEngine
FIDO strong authentication, encryption, digital signature engine
StrongKey CryptoEngine (SKCE) 2.0 is a "crypto Swiss Army knife" server to perform cryptographic functions through web services, while freeing application developers to focus on business functionality. Its modules include: - A FIDO Engine to support FIDO U2F key registrations/authentications - An encryption engine to encrypt/decrypt files using AES/TDES keys - Escrowing keys to on-premises key management system (StrongAuth KeyAppliance/SAKA) - Integration to cloud storage services (AWS S3, Azure and Eucalyptus Walrus) - A signing engine to digitally sign documents, code, etc. with FIPS 140-2 HSM support - An LDAP Engine for AD/LDAP integration for authorization decisions SKCE is battle-tested and in production at one of the largest e-commerce companies in the world, protecting more than 50M documents within the business process; see http://bit.ly/14VPYlO for the case study. Download StrongKey CryptoCabinet (SKCC) on this site to see how to use SKCE. -
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Struts Commons
Interceptors and template classes for Struts 2 based applications
Various template classes, interceptors and libraries used with Struts 6.7, including client written form field annotations, pagination, redirect after post, session per browser tab. See Javadoc. -
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Subsampling Scale Image View
Deep zoom view for displaying huge images without loss of detail
Android library (AAR). Highly configurable, easily extendable deep zoom view for displaying huge images without loss of detail. Perfect for photo galleries, maps, building plans etc. A custom image view for Android, designed for photo galleries and displaying huge images (e.g. maps and building plans) without OutOfMemoryErrors. Includes pinch to zoom, panning, rotation and animation support, and allows easy extension so you can add your own overlays and touch event detection. The view optionally uses subsampling and tiles to support very large images - a low resolution base layer is loaded and as you zoom in, it is overlaid with smaller high resolution tiles for the visible area. This avoids holding too much data in memory. It's ideal for displaying large images while allowing you to zoom in to the high resolution details. You can disable tiling for smaller images and when displaying a bitmap object.
