Java Open Source Projects Directory

...dedicated into Java open source projects

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Build Systems


Autojar helps creating jar files of minimal size from different inputs like own classes, external archives etc. It starts from one or more given classes (e.g., an applet), recursively searches the bytecode for references to other classes, extracts these classes from the input archives, and copies them to the output. The resulting archive will only contain the classes that are really needed. Thus one can keep size and loading time of applets low or make applications independent of installed libraries. In a similar way, autojar can search directories and archives for other resources (like image files), extract them and copy them to the output. Although autojar can't know exactly which classes get loaded dynamically, it can search the bytecode for invocations of Class.forName() and warn about it. In some cases (constant class name), it can even find out which classes are to be loaded, and add them automatically to the output.



Apache Ant is a Java-based build tool. In theory, it is kind of like Make, but without Make's wrinkles.

Why another build tool when there is already make, gnumake, nmake, jam, and others? Because all those tools have limitations that Ant's original author couldn't live with when developing software across multiple platforms. Make-like tools are inherently shell-based -- they evaluate a set of dependencies, then execute commands not unlike what you would issue in a shell. This means that you can easily extend these tools by using or writing any program for the OS that you are working on. However, this also means that you limit yourself to the OS, or at least the OS type such as Unix, that you are working on.

Makefiles are inherently evil as well. Anybody who has worked on them for any time has run into the dreaded tab problem. "Is my command not executing because I have a space in front of my tab!!!" said the original author of Ant way too many times. Tools like Jam took care of this to a great degree, but still have yet another format to use and remember.

Ant is different. Instead of a model where it is extended with shell-based commands, 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.

Granted, this removes some of the expressive power that is inherent by being able to construct a shell command such as `find . -name foo -exec rm {}`, but it gives you the ability to be cross platform -- to work anywhere and everywhere. And hey, if you really need to execute a shell command, Ant has an task that allows different commands to be executed based on the OS that it is executing on.



Schmant is a build tool for building software artifacts. It uses the scripting support in Java 6 for running build scripts, so build scripts can be written in any supported script language. Schmant provides a set of tasks for common build script tasks, such as compiling Java code, building JAR files, exporting code from Subversion repositories and performing text substitution in files. Schmant aims to be feature-compatible with and much easier to use than Apache Ant.



LuntBuild is a powerful build automation and management tool. Continuous integration or daily build can be easily setup through a clean web interface. Generated builds are well managed through functions such as search, categorization, promotion, patching, deletion, etc. It also acts as a central build artifacts download area for your whole team.



Maven is a Java project management and project comprehension tool. Maven is based on the concept of a project object model (POM) in that all the artifacts produced by Maven are a result of consulting a well defined model for your project. Builds, documentation, source metrics, and source cross-references are all controlled by your POM. Look here to see the full list of Maven's features.



Antmod is a build management, release management, and repository management tool. Its implementation is an Ant-based extensible engine for retrieving, versioning, building, and deploying code to and from Subversion or CVS. It standardizes build files for Java projects and provides build plugins for various tasks. It also standardizes tagging and branching for both CVS and Subversion, and its module and repository management can also be used for non-Java projects. It greatly speeds up Java software development, promotes reuse of Java software, and standardizes the build-test- release cycle.



Ant Hill is an Ant library meant to perform remote invocation of build targets via XMPP (Jabber) protocol. To be more specific Ant Hill provides a mechanism to implement Remote Target Invocation. The client / server approach allows to work on clusters and coordinate a large number of machines. Ant Hill has been written to be extensible, it is possible to define quickly new Remote Commands. Ant Hill provides error reporting through Remote Exception Propagation and several debugging features.



Invicta is an open-source build management tool. Using simple project definition files, it generates powerful build scripts (Apache ANT's), while hiding their complexity.

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