build.xml

<project default="run">

	<property name="src.dir"     value="src"/>
	<property name="bin.dir"   value="bin"/>
	<property name="jar.dir" value="jar"/>
	<property name="lib.dir" value="lib"/>
	
	<target name="clean">
		<delete dir="${bin.dir}"/>
		<delete dir="${jar.dir}"/>
		<echo message="cleaning all object"/>
	</target>
	

<target name="compile" depends="clean">
	<mkdir dir="${bin.dir}"/>
	<javac  includeantruntime="false" srcdir="${src.dir}" destdir="${bin.dir}" > 
	</javac>
	<mkdir dir="${bin.dir}/lib"/>
	<echo message="compile all java file"/>
</target>


<target name="jar">
<mkdir dir="${jar.dir}"/>
<copydir src="${lib.dir}"  dest="${bin.dir}/lib"/>
	<jar destfile="${jar.dir}/UsbDongle.jar" basedir="${bin.dir}">
	</jar>
<echo message="Create usbdongle jar file"/>
</target>

</project>