Browse 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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  • 1
    World of Warcraft Community Platform API for Java. this library wish to provide an easy to use wrapper to the World of Warcraft Community Platform API. forum about the API : http://us.battle.net/wow/en/forum/2626217/
    Downloads: 0 This Week
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  • 2

    WrapImaJ

    Multi-platform API for Image Processing systems in Life Sciences

    WrapImaJ purposes to be a multi-platform wrapper for different Image Processing systems for: - using the Java programming language. The purpose of WrapImaJ is not to combine an exhaustive collection of all functionalities of different imaging system, but to offer a simple, concise Application Programming Interface (API) - allowing to develop imaging software, the source code of which is independent from the underlying imaging system on which it relies. In it's current form, it only wraps basic functionalities of ImageJ. The developers of WrapImaJ intend the library to support compatibilty with the main imaging systems available in the Java language and broadly used in the field of life sciences.
    Downloads: 0 This Week
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  • 3
    Write XML
    Write XML is a Java library for writing well-formed XML.
    Downloads: 0 This Week
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  • 4
    X-O lite

    X-O lite

    Light XML to Java mapping based on SAX

    This project provides a lightweight framework to serialize/deserialize java objects into XML. The implementation is based on standard SAX but follows an original approach based on encapsulation paradigm of Object Oriented programming.
    Downloads: 0 This Week
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  • 5
    X-RIME is a open source project devoted to provide Hadoop based solution for large scale social network analysis.
    Downloads: 0 This Week
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  • 6

    X2S

    A simple DOM parser in Java

    X2S is a very simple DOM parser. The aim is to retrieve attributes and text-values from an XML DOM document in the case that you don't need all features and complexity of XPath and/or XQuery. For example, if it could be useful a method to retrieve all text-values from a DOM relative path like: /root-node/persons/person/name or the attributes from a string like: /root-node/persons/person/id
    Downloads: 0 This Week
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  • 7

    XLSX parser for Java in 150 LOC

    An extremely minimal parser for XLSX (Excel) files

    I was unable to find a minimal XLSX (Excel) parser. The closest free option would be apache POI with about 8+ megabyte of JARs and features I don't need. The input is an XLSX file and the output is a Map<String,String[][]> with key of 'sheet name' and a String[][] of cell data. Dates are reformatted to dd/MM/yyyy (configurable in the code). The output of String[][] is to keep the interface compatible with CSV (eg. OpenCSV).
    Downloads: 0 This Week
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  • 8
    XML-CF-lib

    XML-CF-lib

    TeleScope-CF XML Content Filtering Library

    Current TeleScope-CF Java library implementation employs XML parsing and specific pattern-matching that provides standard logical operator constructs to construct the query over the values of XML elements and attributes applied to the XML message on the fly as it is provided in the form of a String object. The code base has been adopted from TeleScope CQ XML stream broker code base written in C. C code has been re-factored into Java with minor modifications. This general-purpose library could be used by any Java applications that are involved in the XML message content filtering. Example application scenarios could be intrusion detection, selective rule engines, targeted database insertions during the ETL process and various business logic scenarios. The library could also be used in XML routers and various web services for XML content filtering where XML is a common message passing format.
    Downloads: 0 This Week
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  • 9
    Extreme lightweight library to parse XML-Strings. Also includes a lightweight SOAP-Client that can even be used on mobile phones (JME)
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    Endpoint Management with Remote Control Built In

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  • 10
    XMLSer(ializer) is a library to encode Java objects into XML. Currently at a very basic stage, it should still handle most objects properly. Some customization of XML, such as aliasing, is supported. All special handling is done via annotations.
    Downloads: 0 This Week
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  • 11
    This program replicates data storage systems of XAM (eXtensible Access Method) technology.
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  • 12

    XTarget

    Java API and Groovy Library for XML Scripting

    XTarget is an Groovy Library for automated editing of small XML Databases with Groovy scripts. It focuses on simultaneous editing of data, including structures like lists and maps, and linking between various XML files.
    Downloads: 0 This Week
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  • 13
    XUI

    XUI

    A simple and elegant Android native UI framework

    XUI is a lightweight Android native UI framework that provides a comprehensive set of components and design styles to simplify mobile interface development. It aims to reduce the complexity of building Android UIs by offering a unified and consistent design system with ready-to-use components. The library includes a wide range of UI elements such as buttons, text inputs, dialogs, pickers, navigation bars, and more, covering most common development needs. It is designed to be easy to integrate and use, with simplified APIs that allow developers to implement features quickly without extensive boilerplate code. XUI also emphasizes visual consistency by providing predefined themes and styling options that ensure a cohesive look across applications. Despite its broad functionality, it maintains a relatively small footprint, making it efficient for mobile environments. Overall, XUI is a practical toolkit for accelerating Android UI development while maintaining quality and consistency.
    Downloads: 0 This Week
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  • 14
    JSP tag library for the YAV javascript validation tool. It provides automatic client-side and server-side validation by using simple validation tags.
    Downloads: 0 This Week
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  • 15
    YCAppTool

    YCAppTool

    Componentized comprehensive case, components are layered into

    YCAppTool is a large Android reference project demonstrating how a growing application can be reorganized into a layered component architecture. It separates infrastructure, reusable functionality, business features, and the main application shell to reduce coupling between teams and modules. The project explores routing, interface-based communication, SPI, reflection, lifecycle initialization, and dependency management between components. Its shared libraries cover storage, logging, permissions, file handling, caching, task scheduling, application state, and other common Android needs. Functional modules add capabilities such as QR scanning, localization, timers, monitoring, media, WebView, and server integration. Extensive documentation explains architectural evolution, common migration problems, dependency pitfalls, stability practices, and diagnostic tooling.
    Downloads: 0 This Week
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  • 16
    YCWebView

    YCWebView

    Based on the Tencent x5 open source library

    YCWebView is an Android WebView framework built around Tencent's X5 engine to reduce the amount of custom integration code required for hybrid applications. It provides a decoupled JavaScript bridge for communication between web content and native Android code. Developers can monitor loading progress, network failures, HTTP errors, SSL problems, and other page states through exposed listeners. The framework supports full-screen video, office-document viewing, file uploads, night mode, incognito mode, and display adjustments for notched screens. Resource interception can be combined with OkHttp caching, while optional HTTP DNS handling targets faster and more reliable loading. URL scheme handling covers actions such as calls, messages, email, payments, native-app launching, and other deep-link behaviors.
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  • 17
    Yaoqiang XPDL Model
    Yaoqiang XPDL Model is a library for workflow process applications (such as Yaoqiang XPDL Editor), parse XML file to XPDL Model object or serialize XPDL Model object to XML file.
    Downloads: 0 This Week
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  • 18

    Yet Another Cron4J

    a simple cron scheduler for java

    A java library for easily scheduling commands using cron expressions. Uses the cron expression parser from Quartz and the HashWheelTimer from netty. Handles DST conflicts, command exceptions, overlapping execution.
    Downloads: 0 This Week
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  • 19
    Yaqc4j is an specification-based testing framework, based on QuickCheck for Haskell by John Hughes. It creates test data automatically through user-defined and built-in generators.
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  • 20
    A set of common Java libraries and utilities to extend those already found in apache-commons APIs.
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  • 21

    ZenTools for Java

    Just a small collections of useful code snippets

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  • 22
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  • 23
    adventure

    adventure

    A user-interface library, formerly known as text, for Minecraft

    Adventure is a library for server-controllable user interface elements in Minecraft: Java Edition. The Adventure documentation should be used alongside the Javadocs. If you have further questions, feel free to join our Discord. Most users will want to use Adventure as a component of an existing modding platform. The best integrated are our Native Support, but we also support other platforms via adapters.
    Downloads: 0 This Week
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  • 24
    agents
    Java framework for agent based application development
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  • 25
    android-common-lib

    android-common-lib

    Android common lib, ImageCache, HttpCache, DropDownListView, etc.

    The Dev Tools App is a powerful android development tool that can help you improve efficiency greatly, It can be used to view the latest open source projects, view activity history, view manifest, decompile, color picker, extract apk or so, view app info, open or close the developer options quickly, and more. Includes cache (picture cache, prefetch cache, network cache), public View (drop down and load more ListView at the bottom, load more ScrollView at the bottom, slide a page Gallery) and common Android tools (network, download, Android resources) Operation, shell, file, Json, random number, Collection, etc.). You can choose a variety of cache algorithms (FIFO, LIFO, LRU, MRU, LFU, 13 types such as MFU) or custom caching algorithms. Cache can be initialized according to system configuration. Applicable to applications that get more pictures and frequently use pictures, including secondary cache, such as Sina Weibo, twitter, WeChat avatar, Meili Talk, Mogujie, Petal, Taobao, etc.
    Downloads: 0 This Week
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