Ant File example, clean, prepare, compile ,jar

build.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project default="create_run_jar" name="Create Runnable Jar for Project FreeMarkerTester with libraries in sub-folder">
	<!--this file was created by Eclipse Runnable JAR Export Wizard-->
	<!--ANT 1.7 is required                                        -->

	<property name="dist.home" value="${basedir}/dist" />
	<property name="src.home" value="${basedir}/src" />
	<property name="bin.home" value="${basedir}/bin" />

	<!-- Define the CLASSPATH -->
	<path id="compile.classpath">
		<fileset dir="${basedir}/bin">
			<include name="*.jar" />
		</fileset>
	</path>

	<target name="clean" description="Delete old work and dist directories">
		<delete dir="${dist.home}" />
	</target>
	
	<target name="prepare" depends="clean" description="Create working dirs and copy static files to work dir">
		<mkdir dir="${dist.home}" />
	</target>
	
	<target name="compile" depends="prepare" description="Compile Java sources">
		<javac srcdir="${src.home}" destdir="${bin.home}">
			<classpath refid="compile.classpath" />
		</javac>
	</target>

	<target name="create_run_jar" depends="compile">
		<jar destfile="YOURJAR">
			<manifest>
				<attribute name="Main-Class" value="${MAIN CLASS}" />
				<attribute name="Class-Path" value=". lib/freemarker.jar" />
			</manifest>
			<fileset dir="${bin.home}" />
		</jar>
	</target>
</project>