1 下载二进制包，如：apache-ant-1.6.3-bin.zip , 解压到一个目录2 把可执行文件的路径 （即 bin 目录的路径）加到环境变量的PATH里面3 设环境变量ANT_HOME 如我的E:/software/apache-ant-1.6.3-bin/apache-ant-1.6.33 设环境变量JAVA_HOME 如我的D:/Program Files/Java/jdk1.5.0_04
4 写一个build.xml文件，拷贝一个过来
<project name="MyProject" default="dist" basedir="."> <description> simple example build file </description> <!-- set global properties for this build --> <property name="src" location="src"/> <property name="build" location="build"/> <property name="dist" location="dist"/>
<target name="init"> <!-- Create the time stamp --> <tstamp/> <!-- Create the build directory structure used by compile --> <mkdir dir="${build}"/> </target>
<target name="compile" depends="init" description="compile the source " > <!-- Compile the java code from ${src} into ${build} --> <javac srcdir="${src}" destdir="${build}"/> </target>
<target name="dist" depends="compile" description="generate the distribution" > <!-- Create the distribution directory --> <mkdir dir="${dist}/lib"/>
<!-- Put everything in ${build} into the MyProject-${DSTAMP}.jar file --> <jar jarfile="${dist}/lib/MyProject-${DSTAMP}.jar" basedir="${build}"/> </target>
<target name="clean" description="clean up" > <!-- Delete the ${build} and ${dist} directory trees --> <delete dir="${build}"/> <delete dir="${dist}"/> </target></project>
5 建一个src目录，把源文件放里面
6 因为我用的编码是utf8，<javac srcdir="${src}" destdir="${build}"/>这一行改为<javac srcdir="${src}" destdir="${build}" encoding="utf-8"/>
7 这样，生成的jar文件还是不能正常运行的。在build.xml所在的目录放一个MANIFEST.MF文件内容如下：Manifest-Version: 1.0Main-Class: book.SwingApplication
注意把第二行的类名换成自己的类名。8 修改build.xml这一行<jar jarfile="${dist}/lib/MyProject-${DSTAMP}.jar" basedir="${build}"/>改成：<jar jarfile="${dist}/lib/MyProject-${DSTAMP}.jar" basedir="${build}" manifest="MANIFEST.MF"/>这样，在build.xml目录运行ant（dos窗口下）后,在lib目录生成的jar文件，就能双击运行了。
如果要了解更多的，看ANT的文档吧，就在下载的zip文件里。
