Open Source Java Libraries - Page 36
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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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RegIOLib
RegIOLib allows quick and easy access to the Windows registry
RegIOLib allows quick and easy access to the Windows registry from within the Java programming language. -
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RegistryFilterExample
Registry Filter Driver SDK
The EaseFilter Registry Filter Driver SDK is a powerful, kernel-mode development toolkit designed to help developers monitor, control, and protect Windows registry operations in real time. It enables the development of robust security, compliance, and system integrity solutions by intercepting and managing registry access before it reaches the Windows registry subsystem. The SDK allows your application to receive notifications before any registry operation is processed by the Windows Configuration Manager. By registering a RegistryCallback routine, your application can detect: Registry key creation, deletion, renaming Registry value changes Query operations -
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RetrofitUrlManager
Let Retrofit support multiple baseUrl and can be change the baseUrl
RetrofitUrlManager is an Android networking utility built on top of Retrofit and OkHttp that enables applications to support multiple base URLs and dynamically switch endpoints at runtime. The library simplifies complex networking architectures where apps interact with multiple APIs, environments, or microservices without requiring developers to rebuild Retrofit instances manually. It works by intercepting outgoing requests and replacing or modifying the target domain through a centralized management layer. The project is especially useful in modular Android applications, debugging environments, multi-tenant systems, and apps requiring dynamic API routing. RetrofitUrlManager integrates seamlessly into existing Retrofit workflows with minimal configuration while preserving compatibility with OkHttp interceptors and Retrofit annotations. Its design prioritizes flexibility, runtime configurability, and reduced boilerplate in Android networking stacks. -
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Ribbon
Ribbon is an inter process communication library
Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support. Ribbon comprises of multiple components some of which are used in production internally and some of which were replaced by non-OSS solutions over time. This is because Netflix started moving into a more componentized architecture for RPC with a focus on single-responsibility modules. So each Ribbon component gets a different level of attention at this moment. APIs that integrate load balancing, fault tolerance, caching/batching on top of other ribbon modules and Hystrix. Load balancer APIs that can be used independently or with other modules. APIs using Eureka client to provide dynamic server list for cloud. -
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Simple but powerful Ruby-style collections and closures implemented with Java 5 features and fine object-oriented design.
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A gathering of reusable Java classes that I've found useful over the years, in a similar vein to Apache Commons.
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Robot Framework SNMP Library
Sending SNMP requests via Robot Framework
The library provides functionality of SNMP manager which can be accessed using Robot Framework keywords. In this model, system under test is SNMP agent. -
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Consist of small but usable Java source code or libraries for rookies or intermediate Java developers.
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An extremely simple Java Rule Engine (Non-JSR 94) that uses rules you create in Java. Simply create your basic rules, implement the single "passes" method for each, then chain them together in an XML file to create more complex rules.
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Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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RudisJavaLib
Application framework.
This library is intended as an application framework. It should ease the creation of classic desktop programs with support for multiple languages, a help- and setup system, file handling and more. -
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RxJavaSamples
Examples of some of the most common usages of RxJava 2 and Retrofit
Examples of some of the most common uses of RxJava 2 with Retrofit. For the interface that needs to request the token first, then use flatMap() to connect the token request and the actual data request coherently, without having to write a nested Callback structure. For non-disposable tokens (tokens that can be reused), after obtaining the token, save it for repeated use, and use retryWhen() to automatically re-acquire the token when it expires, making the process of token acquisition completely transparent and simplified. Convert the returned data into a more convenient format and give it to the Observer. -
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RxPermissions
Android runtime permissions powered by RxJava2
This library allows the usage of RxJava with the new Android M permission model. If you need to trigger the permission request from a specific event, you need to setup your event as an observable inside an initialization phase. You can use JakeWharton/RxBinding to turn your view to an observable (not included in the library). Because your app may be restarted during the permission request, the request must be done during an initialization phase. This may be Activity.onCreate, or View.onFinishInflate, but not pausing methods like onResume, because you'll potentially create an infinite request loop, as your requesting activity is paused by the framework during the permission request. If not, and if your app is restarted during the permission request (because of a configuration change for instance), the user's answer will never be emitted to the subscriber. -
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A simple generic library for Java. This library includes a series of utility classes (including collections) and a few simple APIs for synchronization, messaging, searching etc. The accent of this project is on its simplicity of use and universality. Migrated to: https://github.com/losvald/sglj
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Java API to communicate via RMI calls to run reports and retrieve data using the Capita SIMS CommandReporter.exe tool without contravening support agreements. This has been written using Netbeans and the download contains the whole project folders. Note there is a complex server side setup. If you decide to enter a not recommend to this please give a reason as a blank comment tells nobody what is bad about it and therefore cannot be corrected. I have re-enabled this facility so I can get feedback. I've used this library and server software in a number of areas now at my school for some time and have had no problem. In conjunction with my MoodleRest library I am able to keep staff, students and classes in sync between Moodle and SIMS. I have also used it to create a LearningGateway like site running on Glassfish, albeit no write back and not live to the public but could if configured to run over https. The list can go on but I'm running out of characters! 205 downloads so far.
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Simple JNI (SJNI) is a neat wrapper for Java Native Interface. The aim of the project is to minimize hassle necessary to get going with JNI. Minimize number of lines of code written, while maximizing functionality and keeping your code error-proof.
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SJXML
Simple Java wrapper for W3O XML processing
SJXML is a simple wrapper around complex W3 DOM XML processing API. It provides simpler API to deal with relatively small XML files. -
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SPARGEL
An opensource Java graph library. Abandoned, ignore.
Spargel is a Java graph library that puts its effort in having a rather small but powerful code basis. This is achieved by extending graphs via properties in form of vertice and edge maps. Because these maps are an individual implementation depending on the graph datastructure used, they are more memory efficient than using a Java HashMap. Currently spargel is in its early stages, but will soon support more tasks. As now, implemented are: * Adjecency graph data structures * Algorithms: SSSP, APSP, Traversal, Min-Cut, Max-Flow, Many types of finding Components * Creating sub graphs, vertice and edge maps that use a function to implement their mapping. Spargel is released under GPLv3 -
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Saturn
The vip.com's distributed job scheduling platform
Saturn is a platform created by VIP.com to provide a distributed, fault-tolerant and high available job scheduling service. -
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Math expression parser and evaluator written in Scala. Usable from Java (Sun JRE 1.6) Provides float, integral, boolean and vector data types, some string processing support. Variables may be defined internally or im- and exported through a binding.
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SciChart
Interactive Swing based Charting library to display science data
This free charting library supporting in the initial version line plot and bar plots. Provides: Axis sharing independent rescaling and panning of axis and datasets. Basic tooltips Legend displayer component with ability to select the active dataset. It is designed upon the Model View Controller paradigm. This mean that the dataset related API is abstracted in a model. This model is used by the swing components. Display related functionality is limited to the swing components with no interaction with the model. -
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This is a JavaScript library which gives the ability to use cryptographic functionality abstracted of available technologies on the browser side. It executes a cryptographic function with the fastest technology including Java, JavaScript and Flash.
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SecureSandbox
EaseFilter Secure Sandbox Example
EaseFilter Secure Sandbox was developed by a set of file system filter driver software development kit which includes file access control filter driver, transparent file encryption filter driver and process filter driver. The EaseFilter Secure Sandbox encompasses file security, file encryption, file monitoring, data loss prevention and process monitoring and protection. EaseFilter file system filter driver is a kernel-mode component that runs as part of the Windows executive above the file system. The EaseFilter file system filter driver can intercept requests targeted at a file system or another file system filter driver. By intercepting the request before it reaches its intended target, the filter driver can extend or replace functionality provided by the original target of the request. The EaseFilter file system filter driver can log, observe, modify, or even prevent the I/O operations for one or more file systems or file system volumes.
