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
    ThirtyInch

    ThirtyInch

    A MVP library for Android favoring a stateful Presenter

    This library adds Presenters to Activities and Fragments. It favors the stateful Presenter pattern, where the Presenter survives configuration changes and the dumb View pattern, where the View only sends user events and receives information from the Presenter but never actively asks for data. This makes testing very easy because no logic lives in the View (Activity, Fragment) except for fancy animations which anyway aren't testable.
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  • 2
    A simple Java project that let's you do several tasks multithreaded and very easy.
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  • 3

    ThunderMailConnector

    (주)앤드와이즈의 썬더메일5.0 automail 라이브러리

    (주)앤드와이즈의 대량메일발송 솔루션인 썬더메일5.0( http://www.thundermail.co.kr/thundermail/ ) 의 automail 기능을 이용하기위한 connector java 라이브러리.
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  • 4
    TilesFX

    TilesFX

    A JavaFX library containing tiles that can be used for dashboards

    A JavaFX library containing tiles for Dashboards. The Tile is a simple JavaFX Control that comes with different skins. To get an idea on how to use the skins with their parameters you could either take a look at the Demo file or check out the TilesFX Demo project which also contains information on how to combine TilesFX with other libraries e.g. Medusa You can also check my blog where you will find additional information about certain tiles.
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  • 5
    Simple AspectJ based aspect that logs method execution time
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  • 6
    Library to abstract the implementation of the use of the database, and use it as object oriented. It allows the user to easily persist objects and retrieve them (like JPA but without the overhead and footprint that JPA implies).
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  • 7

    TinyTemplate

    A single-file extensible template engine

    TinyTemplate is a small single-file templating engine in Java. A PHP version is also available. Templates can access the available variables and nested fields/values, format the values dependent on the locale. Conditional statements and loops are also supported.
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  • 8
    Toolkit e-formulieren is een opensource toolkit voor het op een gebruikersvriendelijke manier kunnen maken en onderhouden van e-formulieren. De Toolkit maakt gebruik van Orbeon, en ondersteunt XForms-compliant e-formulieren, evt. met voorinvulling.
    Downloads: 0 This Week
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  • 9
    My personal JEE toolkit, based on Spring and other opensource projects
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  • 10
    Transform SWF is an easy to use library for reading and writing Flash and Flash Video files. As of 25/11/2010 the latest version (3.0) can now be found at GitHub, https://github.com/StuartMacKay/transform-swf.
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  • 11
    Transitions Everywhere

    Transitions Everywhere

    Set of extra transitions on top of Jetpack transitions library

    Originally this library was a full backport of Android Platform's Transitions API. Then all the bug fixes from the library were ported into AndroidX Transitions (previously Support library). Now this lib has minSdk version 14 (Android 4.0 ICS) and consists of some transitions which are not a part of the official set. Internal Transitions that was marked as @hide in the platform are recolor, rotate, change text and crossfade. As well as two extra transitions, which are scale and translation. Migrate to AndroidX! Support libraries are not updating anymore, to get all the bug fixes you have to use AndroidX transitions. Replace imports for all the classes which are a part of the AndroidX lib. Some setters in AndroidX transitions are not following the builder pattern, please rewrite this usages with introducing a helper variable if you encounter the issue.
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  • 12
    A free and light configuration framework library for Java. It changes completely the way you use configuration for your software. Compared to existing frameworks, it enables simpler, easier to read code. Be ready to change your view on configuration!
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  • 13
    Tribuo

    Tribuo

    Tribuo - A Java machine learning library

    Tribuo* is a machine learning library written in Java. It provides tools for classification, regression, clustering, model development, and more. It provides a unified interface to many popular third-party ML libraries like xgboost and liblinear. With interfaces to native code, Tribuo also makes it possible to deploy models trained by Python libraries (e.g. scikit-learn, and pytorch) in a Java program. Tribuo is licensed under Apache 2.0. Remove the uncertainty around exactly which artifacts you're using in production. Tribuo's Models, Datasets, and Evaluations have provenance, meaning they know exactly what parameters, transformations, and files were used to create them. Provenance data allows each model to be rebuilt verbatim from scratch and for evaluations to track the models and datasets used for each experiment.
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  • 14
    Tullibee
    Tullibee provides Java EE components that work with Interactive Brokers' financial-trading Java API (the IB API). Tullibee's current focus is a JCA 1.6 resource adapter built on top of a modified version of the IB API.
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  • 15
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  • 16
    A library for identifying URLs in content and checking their validity on the internet
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  • 17
    The Umber project provides simple, flexible, "earthy" Java tool libraries for developers. The tools supplement common tasks like XML handling, data processing, and PDF generation, but without the complex and arcane APIs of most modern implementations.
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  • 18
    Library for creating user interfaces for applications based on the Java ME platform (MIDP 2.0, CLDC 1.0)
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  • 19
    PROJECT MOVED: https://github.com/workplacesystems/utilsj Various Java utility classes including transactional collections, collection helpers, synchronisation utilities, thread utilities and build utilities classes.
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  • 20
    VJTools

    VJTools

    The vip.com's java coding standard, libraries and tools

    Vipshop, which focuses on Java, has some knowledge about Java. "Alibaba Java Development Manual" is the first enterprise-level Java development manual published to the outside world, which is of great significance to the entire industry. Based on the internal experience of Vipshop, we refer to heavy materials such as "Clean Code" and "Effective Java" to add some items and make some simplifications. The implementation of the rules mainly relies on the code format template and Sonar code rule checking. The core class library for basic functions such as text, collection, concurrency, etc. Best practices regarding the performance and availability of back-end applications. Observe the JVM process indicators and their busy threads. Generational printing version of JMAP. Online emergency collection of JVM data script.
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  • 21
    A Variable Length Quantity streamer. Read and writes various data types in this format. A VLQ Stream stores/reads data using a variable length which might lead to a more compact storage. This library contains both input and output streams.
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  • 22
    VMatrixLib is a little, handy, Java matrix library which implements a set of utility functions (such as calculus of the determinant of a matrix, calculus of the rank, inverse matrix, and many others..) that anyone who have to use matrices needs.
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  • 23
    VMidiLib
    VMidiLib is an advanced MIDI library for J2ME phones
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  • 24
    VOLTA criteria

    VOLTA criteria

    Cassandra Criteria java library

    Volta Criteria is a java library designed for those who want to integrate Cassandra database within their java application, providing intuitive methods for statement construct: you will not have to write code (and therefore know the syntax) CQL when carrying out CQL queries and statements.
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  • 25
    VOLTA log

    VOLTA log

    Cassandra Log4j 2 Appender library

    Volta Log is a java library that enables you to manage the logs of your application, saving them in Cassandra within a designated structure instead of a file. As a result, it ensures faster access to logs and a more efficient management of them.
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