Software Tools for Java Development

Sun Java Software Development Kit (SDK)

• Java 2 Platform, Standard Edition (J2SE)
  By Sun JavaSoft. Java 2 SDK (formerly known as JDK) & Java 2 Runtime Environment (JRE).
  Production Releases, Reference Implementation, Download, Documentation, Support. Java Security Model, Java Foundation Classes (JFC), Java IDL API (Interface Definition Language - Applications Programming Interface), Java Database Connectivity (JDBC).
  J2SE 1.4 Downloads: J2SE SDK, JRE, Documentation, SDK + NetBeans bundle.
  Java 2 SDK, Standard Edition (J2SE) Documentation: General Info, API & Language, Guide to Features, Tool Docs (javac, java, javadoc, appletviewer, jar, jdb), Demos/Tutorials.
• Java 2 Platform, Enterprise Edition (J2EE)
  Overview, Developers Corner, Tutorial, In Practice, Blueprints, Compatibility, Licensees, Tools, Downloads & Specifications, Documentation, White Papers, Case Studies, Technologies. Resources: FAQs, J2EE Glossary, Binary Support, Mailing List, Licensing, Trademark J2EE Technology Center.
  J2EE 1.4 Downloads: J2EE SDK + Sun Java Application Server bundles, Sun Java Studio Creator, J2EE 1.4 Tutorial, Java Application Verification Kit (AVK), Specifications.
• Java 2 Platform, Micro Edition (J2ME)

Compilation, Build and Documentation

• Java 2 SDK Tools and Utilities
  javac: The compiler for the Java programming language.
  java: The launcher for Java applications.
  jar: Manage Java Archive (JAR) files.
• J2SE SDK Javadoc - The Java API Documentation Generator
  Javadoc is a tool for generating API documentation in HTML format from doc comments in Java source code. It is part of the Java J2SE SDK.
  Javadoc Documentation: Javadoc 1.5, Javadoc 1.4. Enhancements (What's New), Doclet & Taglet APIs, Doclets.
  How to Write Doc Comments for the Javadoc Tool: This document describes the style guide, tag and image conventions used in documentation comments for Java programs written at Java Software, Sun Microsystems. It does not rehash related material covered elsewhere.
  For reference material on Javadoc tags, see the Javadoc Reference Page.
  Requirements for Writing Java API Specifications, by Kevin A. Smith and Doug Kramer, Sun Microsystems, based on the Object Class Specification by Edward V. Berard.
• IBM Jikes Project
  By IBM developerWorks - Open Source Software zone.
  Jikes is a fast, robust, full-featured compiler that translates Java source files (.java) into binary format bytecode (.class).
  Advantages of Jikes over javac from Sun SDK: Jikes is OSI Certified Open Source Software; high performance compiler, written in C++; strictly Java compatible, adhere to the Java Language and VM specifications as tightly as possible; performs dependency analysis, useful for incremental builds and makefile generation; provides constructive assistance helping the programmer write better code, with clear error messages and pointing out common programming mistakes (as documented in "Effective Java").
• Apache Ant
  Apache Ant is a Java-based build tool. In theory, it is kind of like Make, but without Make's wrinkles and with the full portability of pure Java code. Ant is the most widely build tool used for Java projects, and also supported by most Java IDEs.
  Ant is open source free software by Apache Software Foundation.
  Ant is extended using Java classes. Instead of writing shell commands, the configuration files are XML-based, calling out a target tree where various tasks get executed. Each task is run by an object that implements a particular Task interface.
• Apache Maven
  Maven is a Java project management and project comprehension tool. Maven is based on the concept of a project object model (POM).
  Maven is open source free software by Apache Software Foundation.
• GNU and the Java language GNU Java Software.
• GCJ: The GNU Compiler for the Java
  GCJ is a portable, optimizing compiler for the Java Programming Language. It can compile: Java source code directly to native machine code, Java source code to Java bytecode (class files), and Java bytecode to native machine code. GCJ is part of the GNU Compiler Collection (GCC). GCC, GDB and related tools are Free Software by GNU.
  A collection of java packages built with gcj.
• GNU Classpath
  GNU Classpath, Essential Libraries for Java, is a GNU project to create free core class libraries for use with virtual machines and compilers for the java programming language.

Virual Machine (VM)

• Blackdown Java-Linux
  Blackdown project are dedicated to the professional development of the Java platform for Linux based on the community source concept. Blackdown Java-Linux provides ports of Java SDK and Runtime Environment for Linux, including the HotSpot Client and Server VMs, Java Web Start and Java Plug-In. The Blackdown project is based entirely on Java product source bases that have been licensed from Sun Microsystems.
• Apple - Java for Mac OS X
• Kaffe Java VM
  Kaffe is a clean room implementation of the Java virtual machine, plus the associated class libraries needed to provide a Java runtime environment. The Kaffe virtual machine is free software, licensed under GNU Public License (GPL).
• Java® Technology for Palm Handhelds
  Java 2 Micro Edition™ (J2ME) on Palm Tungsten handhelds. Download IBM's WebSphere Micro Environment (WME) to run Java on your handheld.
  PalmOne, maker of Palm handhelds.
• ElectricalFire by Mozilla.org
  ElectricalFire (EF) is a Java Virtual Machine that uses JIT (Just In Time) compilation techniques to accelerate Java code execution. ElectricalFire was designed from the start to generate high-performance machine code and to be portable to many different processor architectures.
• Open JVM Integration (OJI) by Netscape/Mozilla.org
  The Open JVM Integration project (OJI) is working to extend the browser to allow Java virtual machines to be plugged into Mozilla. OJI will allow the applet and object tags to show Java applets on a page and support LiveConnect (the bridge between Java and JavaScript). Most of the OJI project involves extending the existing Plug-in API to define what we're calling the Open JVM Plug-in API.
• IKVM.NET
  IKVM.NET is an implementation of Java for Mono and the Microsoft .NET Framework. It includes the following components: a Java Virtual Machine implemented in .NET; a .NET implementation of the Java class libraries; tools that enable Java and .NET interoperability. Free software created by Jeroen Frijters.
  IKVM.NET Weblog.
• SableVM
  SableVM is a highly-portable Java virtual machine written in C, and implementing the Java virtual machine specification, second edition. Its goals are to be complete, reasonably small, fast, and efficient, as well as to provide a well-designed and robust platform for further development and research.
  SourceForge: SableVM.
• JamVM
  JamVM is a new Java Virtual Machine which conforms to the JVM specification version 2 (blue book). In comparison to most other VM's (free and commercial) it is extremely small, with a stripped executable on PowerPC of only ~110K, and Intel 80K. It is designed to support the full specification, and includes support for object finalisation, the Java Native Interface (JNI) and the Reflection API.
  SourceForge: JamVM.
• Google Directory: Java Implementations
  Java VMs.

Related Environments & Languages

• BeanShell
  BeanShell is a small, free, embeddable, Java source interpreter with object scripting language features, written in Pure Java. BeanShell can run in four modes: command line, interactive console (text/graphical), applet, remote session server.
  BeanShell executes standard Java statements and expressions (using Java reflection API), in addition to its own scripting commands and syntax. BeanShell supports scripted objects as simple method closures like those in Perl and JavaScript. You can use BeanShell interactively for Java experimentation and debugging or as a simple scripting engine for your applications.
• Groovy
  Groovy is a new agile dynamic language for the JVM combining lots of great features from languages like Python, Ruby and Smalltalk and making them available to the Java developers using a Java-like syntax.
  Groovy is an open source project and the language was approved as a JSR: JSR 241: The Groovy Programming Language.
  Groovy - Scripting for Java, by Mark Volkmann, Object Computing, Inc. (OCI) partner, February 2004.

Integrated Development Environments (IDE)

• Eclipse (Open-source)
  The Eclipse Project is an open source software development project dedicated to providing a robust, full-featured, commercial-quality, industry platform for the development of highly integrated tools. It is composed of three subprojects: Platform, JDT - Java development tools, and PDE - Plug-in development environment. Eclipse is a kind of universal tool platform - an open extensible IDE for anything and nothing in particular. You will need a 1.3 or better level Java runtime (JRE or JDK) installed on your machine in order to run Eclipse.
  Eclipse Project FAQ.
  The Eclipse.org consortium is an open platform for tool integration built by an open community of tool providers. Eclipse.org has IBM as project founder, but has many other industry leaders as members, including: Borland, Oracle, OMG, Merant, Novell (SuSE), Red Hat, Sybase, Fujitsu, among others.
   
  • Eclipse Plugin Central
  • Eclipse Plugins, Plugin top statistics.
  • Lomboz - free, open-source (LGPL) Eclipse plugin for J2EE. By ObjectWeb.
    Lomboz 3 requires Eclipse Modeling Framework (EMF) + SDO Runtime (or SDK).
  • Eclipse Modeling Framework (EMF)
    Download Eclipse Modeling Framework, SDO & XSD.
  • XMLBuddy - XML, DTD, XML Schema, RELAX NG and XSLT support as Eclipse plugin. By Bocaloco Software.
  • XML development with Eclipse - Harness the power of XML with Eclipse, by Pawel Leszek, IBM, April 2003.
  • SQLExplorer Eclipse Database Plugin (LGPL)
  • Jigloo - SWT/Swing GUI Builder for Eclipse and WebSphere. Free for non-commercial use.
  • STRECL - Struts for Eclipse plugins
  • Easy Struts for Eclipse / JBuilder.
  • MyEclipse J2EE IDE (commercial): MyEclipse Enterprise WorkBench for J2EE productivity.
  • Omondo EclipseJ2EE & EcllipseUML (commercial): Omondo EcllipseUML.
  • Sysdeo Eclipse/WSAD Tomcat Launcher plugin
  • Eclipse Workbench
  • The Power of Three - Eclipse, Tomcat, and Struts
    Tutorial by Keld H. Hansen, Java Boutique.
  • Extend Eclipse's Java Development Tools
    What is possible, where to start, and how to proceed. By Dan Kehn, Senior Programmer, IBM, July 2003.
  • J15 - A JDK 1.5 migration Eclipse plug-in
  • Advanced Qas: Quick Assistants plugin for Eclipse.
  • Google Directory: Java Open Source IDEs: Eclipse
• Sun Java Studio Creator
  Formerly known as Project Rave, the Sun Java Studio Creator environment is the next generation tool for Java application development. This effort brings together the power of 100% Java standards with a simplified visual development model recognized by many developers as the most effective, most productive way to work. The Early Access release of the Java Studio Creator IDE product incorporates the NetBeans core for improved UI performance & JSP support, the JavaServer Faces (JSF) technology final reference implementation for visual drag and drop development and simplified coding, and the Sun Java System Application Server, Platform Edition for a complete development and deployment solution. Sun Java Studio Creator does not have just a name remembering Microsoft's .NET IDE, it in fact imitate the successful user interface and working model of its competitor.
• NetBeans (Open-source)
  NetBeans is an open-source project, consisting of a full featured, professional IDE and a Platform on which you can build any kind of application. NetBeans was acquired and lauched as open source by Sun Microsystems, primary project sponsor and which uses it as base for the Sun ONE Studio.
  NetBeans IDE is a world-class development environment written in Java. It can be used to develop code in Java, HTML, XML, JSP, C/C++ and other languages. The IDE is modular, and there is a huge variety of free and commercial extensions to it to support various technologies. Advanced syntax highlighting, error checking code editor; support for JSP, XML, RMI, CORBA, JINI, JDBC and Servlet technologies; support for Ant, CVS and other version control systems; pluggable support for compilers, debuggers and execution services; wizards and code generation and management tools.
   
  • NetBeans: The Definitive Guide (672 pp.)
    Publisher: O'Reilly Media, October 2002, ISBN: 0-596-00280-7.
• Eclipse versus NetBeans
   
  • The Battle over the Universal Java IDE (PDF)
    By Steven J. Vaughan-Nichols, April 2003.
  • Eclipse, NetBeans and JSR-198
    By Steven J. Vaughan-Nichols, SD Times, March 2003.
  • Eclipse vs NetBeans comparisions
    Links by improve-technologies.com.
• JCreator (Free / Shareware)
  JCreator is a easy and powerful IDE for Java. Lite Edition (LE): Freeware; Pro: Shareware.
  JCreator LE is a great Java IDE for Windows, simple and efficient, specially for standard Java (J2SE) application development. Pro version (shareware) also includes Code Completion (tooltip and inline filling for name and syntax of class members, methods and its parameters), Debugger Interface for jdb and advanced productivity tools.
• Gel (Freeware)
  Gel is a Java IDE natively compiled for Windows, very small and very quick. Gel Overview.
  Gel Features: Programming editor with Syntax highlighting for Java, JSP, HTML, XML, C, C++, Perl, Python and more, Unlimited undo/redo, auto-indent and block indent, regular expression and file searches, among other useful features. Integrated support for source control systems (CVS, VSS and more). Code Assistants with code/tag completion and parameter hints for Java and JSP. Project Management, integrated support for Ang and JUnit, Difference tool. Extensible by plugin-ins and customizable.
  Gel Download. Gel Support site. Yahoo Groups: Gel IDE.
  GExperts Mirror.
• Borland JBuilder (Commercial / Free)
  By Borland. JBuilder is a great visual development environment for building Java applications, applets, JSP/Servlets, JavaBeans, Enterprise JavaBeans and distributed J2EE applications for the Java 2 Platform.
  JBuilder Foundation: free.
  Comparativo de Recursos Borland JBuilder 10 (PDF): Foundation, Developer, Enterprise.
• Oracle JDeveloper (Commercial / Development)
  By Oracle. Java and XML IDE for J2EE Development. Member of Oracle Internet Developer Suite (IDS).
  Oracle Technology Network (OTN): JDeveloper Resources.
  OTN: Java Developer Center.
  Oracle JDeveloper Downloads: all software downloads on OTN are free (free OTN account required), and each comes with a development license that allows you to use full versions of the products only while developing and prototyping your applications.
  Application servers supported by JDeveloper: Oracle Application Server (OAS/iAS), Standalone OC4J (Oracle Container for Java), Tomcat, JBoss, WebLogic.
• IntelliJ IDEA (Commercial)
  By JetBrains. IntelliJ IDEA is a full-featured Java IDE with a high level of usability and productivity thru outstanding advanced code editing and refactoring support. For Windows, Linux, MacOS X, Unix.
  Interface: Java, JSP, XML, HTML and text files editing with syntax highlighting; fully customizable user interface and editing colors and fonts; matching braces highlighting. In-line editing features: code completion, parameter info, common syntax errors and mistakes instant highlight, live templates, auto-indentation (including of pasted text); code block (un)commenting; surrounding code fragment with "try/catch", "if" and other block constructs. Code generation: Automatic insertion and removal of necessary imports; creation of classes, interfaces and packages with templates and assistants; generation of class constructors and field access methods (set/get). Refactoring: Moving and renaming of packages, classes, methods, fields, method parameters and local variables with global reference correction, various specialized tools. Many features on Navigation, Search & Replace, Code style, JavaDoc, Version Control (CVS, SourceSafe), Running, Debugging, Integration (Ant, JUnit etc.)
• WebSphere Studio Site Developer (Commercial)
  By IBM Software. Development environment for building Java, Web and Web services applications. Based on Eclipse technology.
  WebSphere Developer Domain Studio Zone.
• BEA WebLogic Workshop
  Fully featured, Java development environment for enterprise applications. Free download, fully functional. By BEA Systems.
• Sun ONE Studio (formerly Forte) (Commercial)
  By Sun Microsystems. Integrated development environment (IDE) for Java technology. It is based on the NetBeans Tools Platform, and it is tightly integrated with the Sun Open Net Environment (Sun ONE).
• CodeWarrior Development Studio for Mac OS (Commercial)
  By Metrowerks. The CodeWarrior Family of Products.
  CodeWarrior is the most used development environment (IDE) on Macintosh, with support to C/C++ and Java. Platforms: Windows and Mac OS.
• Source-Navigator (Open-source)
  IDE Project at SourceForge (previosly at RedHat Sources). Source-Navigator is a source code analysis tool. With it, you can edit your source code, display relationships between classes and functions and members, and display call trees. You can also build your projects, either with your own makefile, or by using Source-Navigator's build system to automatically generate a makefile. Source-Navigator supports C, C++, Java, Tcl, FORTRAN and COBOL, and provides and SDK so that you can write your own parsers. Source-Navigator is released under the GNU Public License (GPL).
  Source-Navigator Extensions.
• RealJ IDE for Java (Free)
  Previously known as FreeJava. RealJ is FREE to download (for non-commercial use).
• BulletProof JDesignerPro (Commercial)

Implementation Testing

• JUnit
  JUnit is a simple framework to write repeatable tests in/for Java. It is an instance of the xUnit architecture for unit testing frameworks.
• JUnit.org
  This site is dedicated to software developers using JUnit or one of the other XUnit testing frameworks.
• Java Extreme Programming: JUnit (PDF)
  Chapter 4 from the book Java Extreme Programming Cookbook, by Eric M. Burke and Brian M. Coyner, O'Reilly Media, March 2003, ISBN 0-596-00387-0.
• Java Application Verification Kit (AVK) for the Enterprise
  The Java Application Verification Kit (AVK) for the Enterprise is a tool intended to help developers test their applications for correct use of J2EE APIs and portability across J2EE compatible application servers, and to help developers avoid inadvertently writing non-portable code.
  Java Application Verification Kit (AVK) for the Enterprise 1.4 FCS - Download.
  Sun Java Studio Creator - Developer Website.
• HttpUnit
  Written in Java, HttpUnit emulates the relevant portions of browser behavior, including form submission, JavaScript, basic HTTP authentication, cookies and automatic page redirection, and allows Java test code to examine returned pages either as text, an XML DOM, or containers of forms, tables, and links. When combined with a framework such as JUnit, it is fairly easy to write tests that very quickly verify the functioning of a web site.
  SourceForge: HttpUnit.
• jWebUnit
  jWebUnit is a Java framework that facilitates creation of acceptance tests for web applications. It evolved from a project where we were using HttpUnit and JUnit to create acceptance tests. As the tests were being written, they were continuously refactored to remove duplication and other bad smells in the test code. jWebUnit is the result of these refactorings.
  SourceForge: jWebUnit.

Decompilation & Obfuscation

• Java Optimize and Decompile Environment (JODE)
  JODE is a java package containing a decompiler and an optimizer and obfuscator for java. This package is freely available under the GNU GPL.
• DJ Java Decompiler
  DJ Java Decompiler is Windows decompiler and disassembler for Java that reconstructs the original source code from the compiled binary CLASS files. It is a stand-alone Windows application (doesn't require Java installed), using Jad as its decompiling engine, including a built-in Java source graphical editor with syntax-coloring. DJ Java Decompiler is written and supported by Atanas Neshkov and is a freeware software.
• JAD - the fast JAva Decompiler
  Jad is a Java decompiler, i.e. program that reads one or more Java class files and converts them into Java source files which can be compiled again. Jad is a 100% pure C++ program and it generally works several times faster than decompilers written in Java. Jad doesn't use the Java runtime for its functioning, therefore no special setup is required. Jad can be used: for recovering lost source codes; for exploring the sources of Java runtime libraries; as a Java disassembler; as a Java source code cleaner and beautifier. Jad is free for non-commercial use.
• JReversePro - Java Decompiler
  JReversePro is a Java Decompiler / Disassembler written entirely in Java. This reverse engineering utility is issued under the GNU GPL.
  SourceForge Project: JReversePro.
• Java Decompiler HOW-TO
  At TLDP - the Linux Documentation Project. (ibiblio.org mirror).
• Java decompilers compared
  By Dave Dyer, JavaWorld July 1997.
• Mocha, the Java Decompiler
• Java Decompilers
  By Program-Transformation.Org.

Obfuscators

• RetroGuard
  Java Bytecode Obfuscation. By Retrologic Systems. Written in Java, supports JDK 1.1 through 1.5 and J2ME. RetroGuard has been released under the Lesser GNU License (LGPL), and is distributed at no charge for commercial or non-commercial use.
• ProGuard
  ProGuard is a free Java class file shrinker and obfuscator. It can detect and remove unused classes, fields, methods, and attributes. It can then rename the remaining classes, fields, and methods using short meaningless names. The resulting jars are smaller and harder to reverse-engineer. ProGuard is a fast command-line tool with an optional graphical user interface. ProGuard is free, under a GPL license.

Code Generation & Refactoring

• XDoclet
  XDoclet is a code generation engine. It enables Attribute-Oriented Programming for java. In short, this means that you can add more significance to your code by adding meta data (attributes) to your java sources. This is done in special JavaDoc tags. Currently XDoclet can only be used as part of the build process utilizing Jakarta Ant. Although XDoclet originated as a tool for creating EJBs, it has evolved into a general-purpose code generation engine. XDoclet is open source developed by a group of experts around the world and distributed under a flexible BSD license.
  SourceForge Project: xdoclet.
• JRefactory
  JRefactory is a tool that allows you to perform many package, class and method refactorings. JRefactory also includes other useful related tools: Pretty Printer/Beautifier, UML Diagrams, Printing, Coding Standards checking, BugFinding, Metrics, among others. The software is free, created by Chris Seguin and now maintained by Mike Atkinson. Currently supported IDEs: jEdit, NetBeans 3.6, JBuilder X, Stand-alone, Ant.

Conding Style & Standardization

• Google Web Directory: Programming Languages: Java Development Tools
  Ant, Applet Development, Code Beautifiers, Code Exploring and Managing, Code Refactoring, Debugging, Deployment, Design and Modelling, Integrated Development Environment (IDE), Micro, Obfuscators, Performance and Testing, Translators.
  Java Code Beautifiers.
• Java Checkstyle
  Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for projects that want to enforce a coding standard. By default it supports the Sun Code Conventions. However, Checkstyle is highly configurable.
• Jalopy
  Java Source Code Formatter, Beautifier, Pretty Printer.
  Jalopy is a source code formatter for the Sun Java programming language. It layouts any valid Java source code according to some widely configurable rules; to meet a certain coding style without putting a formatting burden on individual developers. With Jalopy you will be able to transform any foreign coding style to your own preferences, without any browbeating or bloodletting.
  Jalopy is "OSI Certified Open Source Software", released under a BSD License.
• JAnalyzer
  From Infozone Project Tools. JAnalyzer is a source code formater that produces source code according to the code conventions for Java published by Sun Microsystems.
• Artistic Style
  A Free, fast and small Automatic Indentation Filter for C, C++, C#, and Java Source Codes, by Tal Davidson, Israel.
  SourceForge Project: astyle.
• Jindent
  Jindent is a Java source-code formatter, beautifier and pretty printer. Commercial product.
• Jacobe - Java Code Beautifier
  Jacobe is a configurable code beautifier for the Java programming language. It is possible to let Jacobe print your Java code according to the widely used layout rules of Sun Microsystems, or customize it to your own standards. Jacobe for Linux and Windows are free. Jacobe for Solaris has a commercial licence. By TIOBE Software.
• JPretty - Java Source Code Beautifier
  JPretty is a Java source beautifier. It takes a syntactically correct Java program and reformats it according to specified options. Commercial product.

Report and Document Generation Tools

• JasperReports
  JasperReports is a powerful report-generating tool that has the ability to deliver rich content onto the screen, to the printer or into PDF, HTML, XLS, CSV and XML files. It is entirely written in Java and can be used in a variety of Java enabled applications, including J2EE or Web applications, to generate dynamic content. By Teodor Danciu, free open-source software, distributed under LGPL.
   
  • JasperAssistant
    JasperAssistant is a visual report designer for JasperReports, integrated with Eclipse IDE. It is built on top of the Eclipse's plug-in architecture and help you create JasperReports report definition files through an intuitive graphical interface. Commercial product.
• DataVision
  DataVision is an Open Source reporting tool similar to Crystal Reports. Reports can be designed using a drag-and-drop GUI. They may be run, viewed, and printed from the application or exported as HTML, XML, PDF, LaTeX2e, DocBook, or tab- or comma-delimited text files. DataVision is written in Java and runs almost anywhere. It can generate reports from databases or text data files. Any database with an available JDBC driver should work. Report descriptions are stored as XML files. DataVision is developed and maintained by Jim Menard.
• JFreeReport
  JFreeReport is a free Java report library. XML-based report definitions; output to the screen, printer or various export formats (PDF, HTML, CSV, Excel, plain text); complete source code included (GNU LGPL).
  SourceForge Project: JFreeReport.
• iText - a Free Java-PDF library
  iText is a library that allows you to generate PDF files on the fly. By Bruno Lowagie and Paulo Soares. The iText classes are very useful for people who need to generate read-only, platform independent documents containing formatted text, lists, tables and images. It used the PDF format, in which you can control exactly how your output will look. iText is available for free under multiple licenses: MPL and LGPL.
  SourceForge Project: iText.
• JPedal - PDF Extraction for Java Developers
  JPedal is an actively developed Java library for PDF. It provides routines to extract text fragments and images from PDF as well as a rasterizer. There are two JPedal library licence versions: Open Source (GPL) (for educational and non-commercial purposes) and commercial (for commercial projects).
  SourceForge Project: JPedal.
• Apache XML: FOP (Formatting Objects Processor)
  The goal of the Apache XML FOP Project are to deliver an XSL-FO to PDF formatter, compliant to XSL-FO W3C Recommendation and Portable Document Format Specification (Version 1.3) from Adobe Systems.
  FOP (Formatting Objects Processor) is the world's first print formatter using stantard XSL formatting objects (XSL-FO) file format as input. FOP is output independent, but its primary output target is PDF. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, SVG, XML (area tree representation), Print, AWT, MIF and TXT. FOP is part of Apache's XML project.
• jfor - Open-Source Java XSL-FO to RTF converter
  XML to RTF publishing. jfor converts XML documents conforming to the XSL-FO specification to RTF format, the goal being to use the same XSL-FO documents (as often generated using XSLT transforms) to generate PDF (using FOP or similar) and RTF (using jfor) documents.
  jfor = Java xsl-FO to Rtf converter. jfor is open-source released under its own Apache-style license.
  SourceForge project: jfor.
• Pie Chart and Graph Software
  By jPowered.com. Commercial product.
  The 2D / 3D Pie Chart provides both a client (Java applet) and server side (Java Servlet) solution for the incorporation of pie graphs into web pages, from static or dynamic data.
• Creating pie charts with JSP is a breeze
  Article by Donovan Cowie, Builder.com, April 21, 2003.
• CORDA - Charts, Graphs, Maps and Executive Dashboards
  Professional commercial products.
   
  • PopChart: Java server-based suite of tools available for creating sophisticated interactive charts and graphs.
  • OptiMap: server based mapping solution that integrates dynamic data in a geographic format for display in a web browser.

Java Code Repositories

• Giant Java Tree
  The Giant Java Tree is an open source project whose primary aim is to create a Java source tree consisting entirely of open source.
• Java Shareware
  JavaShareware promotes Java™ through sharing resources and has created a comprehensive Java site that includes Java Applications, Applets, Classes, Servlets, Beans, Development Tools and hundreds of other Java projects.
• JARS.com - Java Review Service, by EarthWeb (link alternativo)
  The #1 Java Review Service - Top rated by jars.
• Antelmann.com Java Framework
  Package of some useful Java projects, by Holger Antelmann, freely available on the basis of the GNU General Public License (GPL). Access to CDDB (FreeDB) Internet service, Strategy game programming, Network programming, Generally useful utility classes, among others.
  Antelmann.com Downloads.
• Google Directory: Java Class Libraries
• Google Directory: Java Code Directories