Chapter 9. Example Build File

The following example build file follows these guidelines. This build file would be stored on disk as "MyProject.xml".

<project name="MyProject" default="dist" basedir=".">
        simple example build file
    <!-- set global properties for this build -->
    <!-- where the source files are -->
    <property name="src" location="src"/>
    <!-- where the compiled classes go -->
    <property name="build" location="build"/>
    <!-- where to place the finished jar file -->
    <property name="dist"  location="dist"/>

    <!-- ========== Dist Target ===================================
        The dist target compiles all the source code and creates
        a jar file for distribution.
    <target name="dist" depends="clean, compile"
        description="generate the distribution" >
        <!-- Create the distribution directory -->
        <mkdir dir="${dist}/lib"/>

        <!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar
            file -->
        <jar jarfile="${dist}/lib/MyProject-${DSTAMP}.jar"

    <!-- ========== Init Target ====================================
        This target initializes the build by creating a time stamp
        for use in the jar file name and creating the directory
        to hold the compiled classes.
    <target name="-init">
        <!-- Create the time stamp -->
        <!-- Create the build directory structure used by compile -->
        <mkdir dir="${build}"/>

    <!-- ========== Compile Target =================================
        The compile target compiles all files in the source directory
        into the build directory.
    <target name="compile" depends="-init" 
        description="compile the source " >
        <!-- Compile the java code from ${src} into ${build} -->
        <javac srcdir="${src}" destdir="${build}"/>

    <!-- ========== Clean Target ====================================
        The clean target deletes all files from the build directory
        and the dist directory. 
    <target name="clean" description="clean up" >
        <!-- Delete the ${build} and ${dist} directory trees -->
        <delete dir="${build}"/>
        <delete dir="${dist}"/>