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
    Application for searching classpath dependencies of source code. Sometimes you do not know, which common libraries you need to compile existing java source code including transitive dependencies.
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  • 2

    Jasper2Docx

    JasperReports exporter to Docx document

    [EN] An implementation of a JasperReports exporter that produces Word 2007 document (docx format) from a report. The difference between this library and the JasperReports default exporter is the mission to produce the less number of tables in the Word document, that is to obtain a document based on text paragraphs instead of tables, easy to edit. [IT] Implementazione di un convertitore di un report prodotto con JasperReports in un documento in formato Word 2007 (docx). A differenza del convertitore di default di JasperReports, questa libreria cerca di ridurre al mimino la produzione di tabelle per ottenere un documento Word orientato al paragrafo, quindi più facilmente modificabile.
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  • 3
    An easy way for checking the precondition(s) of (public) methods and constructors (design by contract). All arguments can be checked, before an IllegalArgumentException is thrown. Creating consistent messages for inconveniences in argument values.
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  • 4

    Java Bindings

    Java bindings for the Wheefun Options Parsing Library

    This project contains bindings for the Java Programming Language to the Wheefun Options Parsing Library. It is meant to provide parity with the C implementation so JVM languages can take advantage of WFOPT. Fore more information, please see the main page.
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  • 5
    A Java CIGI packet stuffer which supports encoding/decoding a limited number of CIGI 3.3 packets. The library is licensed under the LGPL.
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  • 6
    This software provides library to encode/decode Java strings to/from Base64 encoding and variants. Just include the .jar file into your classpath, to encode: string.getbytes("x-base64"); to decode: new String(bytearray, "x-base64");
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  • 7
    Java Client for Google Maps Services

    Java Client for Google Maps Services

    Java client library for Google Maps API Web Services

    This library brings the Google Maps API Web Services to your server-side Java application. Each Google Maps Web Service request requires an API key. API keys are generated in the 'Credentials' page of the 'APIs & Services' tab of Google Cloud console. The Java Client for Google Maps Services is designed for use in both server and Android applications. In either case, it is important to add API key restrictions to improve the security of your API key. Additional security measures, such as hiding your key from version control, should also be put in place to further improve the security of your API key.
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  • 8

    Java DSA extensions

    Java datastructures and algorithms extensions

    DSA extensions contains classes similar in purpose to the classes provided in java.util. Currently, it contains sortable Lists and Maps, as well as a balanced binary search tree and a binary array search algorithm.
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  • 9
    Just another data-structure library for Java.
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  • 10
    Biblioteca que fornece métodos utilitários para manipulação de datas em java.
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  • 11
    Use of annotations to specify constraints on methods. There are annotations available to perform common checks (i.e. a parameter has to be not null, an int value has to be positive, etc.) and to use a full-flavoured design by contract in java with suppor
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  • 12
    Java ESRI Shape File Reader
    A lightweight Java library that reads ESRI shape files.
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  • 13

    Java Enhanced Reflection Interface

    A collection of reflection facades for the Java Programming Language

    This library contains several utilities for working with reflection in Java. Java's reflection framework becomes particularly difficult to work with because of rules related to generics, and this framework aims to make interacting with it easier.
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  • 14
    This is a Java port of the original FPDF free PDF generation library for PHP.
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  • 15
    Java Fastest String Utility
    Fastest string utility is java library (JAR ) for string operation . This library is very easy to use, very fast and very efficient in string operations such as split, toUpperCase, toLowerCase, replace, delete, regular expression and others.
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  • 16

    Java FoldMap Lists

    A powerful, flexible, potentially infinite List/Deque class in Java

    Java FoldMap Lists is a translation to Java of, and a sizable expansion upon, the original FoldMap list package (http://hackage.haskell.org/package/fmlist). Uses the Functional Java library (http://functionaljava.org/) in its implementation and interface.
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  • 17
    Java Gadu-Gadu protocol implementation
    JGGAPi is java implementation of Gadu-Gadu protocol. Gadu-Gadu is a IM system very popular in Poland based on proprietary protocol. The implementation is based on specification of Gadu-Gadu protocol gathered during implementation of EKG application.
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  • 18
    A basic package that represents graphs along with some basic graph algorithms in Java. The idea is to keep the representation simple, straightforward and documented.
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  • 19
    Java HTML/XML Compressor is a very small, fast and easy to use library that compresses given HTML or XML source by removing extra whitespaces, comments and other unneeded characters without breaking the content structure.
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  • 20

    Java IOBuffers

    Data buffer management library

    Java utility library which allows you to read/write typed data from/to a byte buffer. Useful when you have to create/interpret a byte array with typed data.
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  • 21

    Java Jar Manager

    Classpath Jar manager

    Simple program to manage libraries jar.
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  • 22
    Java Kohonen Neural Network Library Kohonen neural network library is a set of classes and functions for design, train and use Kohonen network (self organizing map).
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  • 23
    Java library to parse GNU Makefiles. The source code is available from SVN. The latest revision should be in trunk, the latest "stable" release should be in branch.
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  • 24
    Java Marine API

    Java Marine API

    NMEA 0183 library for Java

    Java Marine API is an NMEA 0183 library for Java. For furher info and latest source code, see project's Github pages. https://github.com/ktuukkan/marine-api/
    Downloads: 0 This Week
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  • 25
    Movido a https://github.com/naferx/java-monto-escrito
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