1. 編譯、打jar包、運行程序的一個完整例子

<?xml version="1.0" encoding="UTF-8" ?> 
<project name="HelloWorld" default="run" basedir="."> 
  <property name="src" value="src" /> 
  <property name="dest" value="classes" /> 
  <property name="hello_jar" value="hello1.jar" />    
  <target name="init"> 
    <mkdir dir="${dest}" /> 
  </target> 
  <target name="compile" depends="init"> 
    <javac srcdir="${src}" destdir="${dest}" /> 
  </target> 
  <target name="build" depends="compile"> 
    <jar jarfile="${hello_jar}" basedir="${dest}" /> 
  </target> 
  <target name="run" depends="build"> 
    <java classname="test.ant.HelloWorld" classpath="${hello_jar}" /> 
  </target> 
  <target name="clean"> 
    <delete dir="${dest}" /> 
    <delete file="${hello_jar}" /> 
  </target> 
  <target name="rerun" depends="clean,run"> 
    <ant target="clean" /> 
    <ant target="run" /> 
  </target> 
</project>

　　2. 若干個模塊，分別都已經有了上面的build.xml和源代碼，可以用下面的build.xml集成它們：

<?xml version="1.0" encoding="UTF-8" ?> 
<project name="main" default="build" basedir="."> 
  <property name="bin" value="${basedir}\bin"/> 
  <property name="src1" value="${basedir}\src1"/> 
  <property name="src2" value="${basedir}\src2"/> 
  <property name="src3" value="${basedir}\src3"/> 
  <target name="init"> 
    <mkdir dir="${bin}"/> 
  </target> 
  <target name="run"> 
    <ant dir="${src1}" target="run"/> 
    <ant dir="${src2}" target="run"/> 
    <ant dir="${src3}" target="run"/> 
  </target> 
  <target name="clean"> 
    <ant dir="${src1}" target="clean"/> 
    <ant dir="${src2}" target="clean"/> 
    <ant dir="${src3}" target="clean"/> 
  </target> 
  <target name="build" depends="init"> 
    <ant dir="${src1}" target="build"/> 
    <ant dir="${src2}" target="build"/> 
    <ant dir="${src3}" target="build"/> 
    <copy todir="${bin}"> 
      <fileset dir="${src1}"> 
        <include name="*.jar"/> 
      </fileset> 
      <fileset dir="${src2}"> 
        <include name="*.jar"/> 
      </fileset> 
      <fileset dir="${src3}"> 
        <include name="*.jar"/> 
      </fileset> 
    </copy> 
  </target> 
  <target name="rebuild" depends="build,clean"> 
    <ant target="clean"/> 
    <ant target="build"/> 
  </target> 
</project>

　　3. 利用property簡化屬性

　　新建all.properties文件，里面的內容

src1=F:\\TestAnt\\blog\\src1 
src2=F:\\TestAnt\\blog\\src2 
src3=F:\\TestAnt\\blog\\src3

　　然后，在build.xml里這樣寫就可以了。

<property file="all.properties"/> 
 <property name="bin" value="${basedir}\bin"/>

　　4.利用include xml在多個build.xml里添加同樣的內容

　　如include.xml:

<?xml version="1.0" encoding="UTF-8" ?> 
<property name="src" value="src"/> 
<property name="dest" value="classes"/> 
<target name="test"> 
  <ant target="run"/> 
</target>

　　在build.xml里這樣寫：

<?xml version="1.0" encoding="UTF-8" ?> 
<!--include a xml file, it can be common property, can be also a target--> 
<!DOCTYPE project[ 
<!ENTITY share-variable SYSTEM "file:../include.xml"> 
]> 
<project name="HelloWorld" default="run" basedir="."> 
  <!--use the include--> 
  &share-variable; 
  ... 
</project>