build.xml

<project name="nagini" default="dist" basedir=".">
  <!-- set global properties for this build -->
  <property name="lib"  location="lib" />
  <property name="src"  location="src" />
  <property name="dist" location="dist"/>

  <path id="lib-classpath">
    <fileset dir="${lib}">
      <include name="*.jar"/>
    </fileset>
  </path>

  <target name="compile" description="compile the source " >
    <mkdir dir="${dist}"/>
    <javac srcdir="${src}" destdir="${dist}" debug="true" includes="**/*.java">
      <classpath refid="lib-classpath" />
    </javac>
  </target>

  <target name="dist" depends="clean,compile" description="generate the distribution" >
    <mkdir dir="${dist}"/>
    <jar jarfile="${dist}/nagini.jar" basedir="${dist}"/>
    <delete dir="${dist}/nagini"/>
  </target>

  <target name="clean" description="clean up" >
    <delete dir="${dist}"/>
  </target>
</project>