Questions tagged [ant]

Apache Ant (formerly Jakarta Ant) is a declarative, XML-based build tool created originally for Java projects. It provides a rich set of standard tasks for performing most common build operations, such as compiling Java source, building archives and running tests. Ant's functionality can be extended through custom tasks and macros.

Ant

Apache Ant is a Java open-source library and command-line tool whose mission is to drive processes described in XML build files as targets and extension points dependent upon each other. Most commonly, Ant is used to build Java applications.

It supplies a number of built-in tasks allowing to compile, assemble, test and run applications. Although primarily aimed at building Java applications, Ant can also be used effectively to build non-Java software, for instance C or C++ applications.

More generally, Ant can be used to pilot any type of process which can be described in terms of targets, tasks, and macros. It's a standard and effective framework which transforms a development structure of project to a deployment structure.

Ant was historically meant as a replacement and Java counterpart for the Unix Make build utility.

References

Extensions

Example

Hello, World!

A build.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<project name="HelloWorld" default="world" basedir=".">
  <target name="world" depends="message" description="outputs a friendly message">
    <echo message="World!" />
  </target>
  <target name="message">
    <echo message="Hello, " />
  </target>
</project>

This project can be run from the directory containing the build.xml file by just typing:

  • ant
  • or ant -f build.xml

The list of available self-documenting targets can be viewed with ant -p.

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Using multiple cores/processors when compiling Java

I use a desktop with eight cores to build a Java application using Ant (through a javac target). Is there a way to speed up the compilation by using more than one thread or process? I know I can run several Ant tasks in parallel, but I don't think…
Xavier Nodet
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Build Failed java.lang.OutOfMemoryError: Java heap space

I am facing this issue while building my build.xml. BUILD FAILED java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:2786) at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94) at…
vibhas
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Can't build and run an android test project created using "ant create test-project" when tested project has jars in libs directory

I have a module that builds an app called MyApp. I have another that builds some testcases for that app, called MyAppTests. They both build their own APKs, and they both work fine from within my IDE. I'd like to build them using ant so that I can…
emmby
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Get rid of JAXBElement in classes generated by wsimport called from ant

I have the following problem: I'm using the wsimport ant task to create a webservice client (for salesforce.com). Everything's working fine but the generated classes all use this strange JAXBElement class for all bean properties. Eg: public void…
MisterY
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what is ivy? and how it is related to ant?

I have seen many ivy files in my application's build projects. What is Ivy, and its relation with ant?
GuruKulki
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Ant build scripts, antcall, dependencies, etc

I have a build script and as part of that script it copies a jar file to a directory, for ease lets call it the utils jar. the utils jar is built by another build script sitting in another directory. What im trying to do have my build script run…
shsteimer
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Maven vs Ant for automatic builds in Android applications

I'm evaluating whether to use Ant or Maven to automate my build process for Android development. I've been trying to read online to make an informed decision, but haven't found many specifics that relate to Android development. Based on your…
bluediapente
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Running ant from a batch file: Later commands don't run

I have a batch file that runs ant and then copies one of the files that were produced: ant -Dproject.version=1.1.2 release published copy /Y D:\dir1\MyJar.jar D:\dir2\MyJar.jar When I run the batch file, ant runs successfully, but the copy…
Paul Reiners
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Command line to run the Ant task with hyphen in the task name

The task name starts with a hyphen "-". Done! How can I specify this task when running ant script from command…
alex2k8
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Ant encoding problem on Windows - UTF-8 files but spits garbage on diacritics

Somehow I can't get my UTF-8 sources to play nice with Ant. I get a whole lot of "warning: unmappable character for encoding ascii". I'm going crazy, really. Hours and hours and hours. Btw, I noticed 5 people already used the tag crazy. :-) And yes,…
davidcesarino
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ANT Problems: net/sf/antcontrib/antcontrib.properties

I am attempting to install software onto my Debian Lenny server. Specifically, Capture-HPC. I have setup VMWare server, along with all the prerequisites. When I go to run ant in the directory, i get the following error: [taskdef] Could not load…
Julio
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Ant: Class not found: javac1.8

I am trying to build a project using Ant in eclipse. I right-clicked on build.xml > Run As > Ant Build. However, I am getting the following error: BUILD FAILED C:\Users\David\eclipse\test-project\build.xml:26: Class not found: javac1.8 and also a…
David_Z
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Java 8 Javascript Engine backwards compatibility

I am trying out Java 8 in my project and I am stuck in an error related to my build process. I am using ANT scripts and at some point i am using some javascript (embeded into ANT) to do some build specific operations. The part of the script that is…
nikkatsa
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ant build : unable to locate tools.jar. Expected find it in C:\Program Files\Java\jre7\lib\tools.jar

I know that this question is popular, but no one of solutions can help me. I used this, this, this and this solutions, but no one help me. I want to implement uiautomator Tests and need to build my build.xml with ant, but get this strange error. I…
Rikki Tikki Tavi
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Cannot get ant installed properly for phonegap using eclipse and windows 8

Trying to use Phonegap in Eclipse on windows 8. I've created a project at C:\Development\HelloWorld. In the command line, when I type: phonegap local build android I get the following error: An error occurred during creation of android sub-project.…
Rex_C
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