build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="clIRC" basedir="." default="run">

  <target name="clean">
    <delete dir="build"/>
  </target>
  
  <target name="compile" depends="clean">
    <mkdir dir="build"/>
    <mkdir dir="build/classes"/>
    <javac srcdir="src" destdir="build/classes"/>
  </target>
  
  <target name="jar" depends="compile">
    <mkdir dir="build"/>
    <mkdir dir="build/jar"/>
    <jar destfile="build/jar/HelloWorld.jar" basedir="build/classes">
      <manifest>
	<attribute name="Main-Class" value="irc.EntryPoint"/>
      </manifest>
    </jar>
  </target>
  
  <target name="run" depends="jar">
    <java jar="build/jar/HelloWorld.jar" fork="true"/>
  </target>
  
</project>