Ant Build example.

<?xml version="1.0" encoding="UTF-8"?>

<project basedir="." default="usage" name="TestPrjAndBuild">

	<!-- 定义目录变量 -->

	<property name="project-name" value="TestPrjAndBuild" /> <!-- ====此处需要修改====.jar文件名 -->

	<property name="src.dir" value="src" /> <!-- src -->

	<property name="lib.dir" value="lib" /> <!-- lib -->

	<property name="build.dir" value="bin" /> <!-- bin -->



	<property name="jar-file-name" value="${project-name}.jar" />

	<property name="main-class" value="com.test.MyMain" /> <!-- ====此处需要修改====main-class -->

	<!-- 定义classpath -->

	<path id="master-classpath">

		<fileset dir="${lib.dir}">

			<include name="**/*.jar" />

		</fileset>

		<pathelement path="${build.dir}"></pathelement>

	</path>

	<target description="Build file usage info (default task)" name="usage"> <!-- 默认执行的Task -->

		<echo message=" " />

		<echo message="  ${project-name} " />

		<echo message="-------------------------------------------------------" />

		<echo message="  Available Targets:" />

		<echo message="  init    	- Init the directory" />

		<echo message="  compile    - Compiles the source code" />

		<echo message="  copy-res   - Copy the resources" />

		<echo message="  jar        - Generate an .jar for source code" />

		<echo message="  run        - Execute Main-Class" />

		<echo message="  clean      - Delete class files and .jar file" />

		<echo message="-------------------------------------------------------" />

	</target>



	<!-- 初始化${build.dir}目录 -->

	<target name="init">

		<mkdir dir="${build.dir}" />

		<mkdir dir="${lib.dir}" />

		<!-- 是否有lib目录,没有则加上 -->

	</target>

	<!-- 编译 -->

	<target depends="init" name="编绎">

		<javac encoding="UTF-8" debug="true" deprecation="on" destdir="${build.dir}"

			listfiles="on" failonerror="true" srcdir="${src.dir}">

			<classpath refid="master-classpath" />

		</javac>



	</target>

	<!-- 复制资源文件 -->

	<target name="复制资源文件">

		<copy todir="${build.dir}">

			<fileset dir="${src.dir}">

				<exclude name="**/*.java" />

			</fileset>

		</copy>

	</target>



	<!-- 运行 -->

	<target depends="编绎" name="运行">

		<java classname="${main-class}" classpath="${build.dir}" fork="true"

			maxmemory="256m">

			<classpath refid="master-classpath" />

			<sysproperty key="file.encoding" value="UTF-8" />

			<arg value="-h" />

		</java>

	</target>

	<!-- 生成jar包 -->

	<target depends="编绎" name="打成jar包">

		<jar basedir="${build.dir}" destfile="${jar-file-name}">

			<manifest>

				<attribute name="Main-Class" value="${main-class}" />

				<attribute name="Class-Path" value="" />

			</manifest>

		</jar>

	</target>

	<!-- 清除 -->

	<target name="clean">

		<delete dir="${build.dir}" />

		<delete file="${jar-file-name}" />

	</target>

</project>