build.xml

<project name="omr" default="build" basedir=".">
  <property name="src.dir" location="src"/>
  <property name="lib.dir" location="lib"/>
  <property name="build.dir" location="bin"/>
  <property name="dist.dir" location="dist"/>
  <property name="dist.lib.dir" location="dist/lib"/>
  <property name="main.class.name" value="omr.Omr"/>

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

  <target name="init">
    <tstamp/>
    <mkdir dir="${build.dir}"/>
  </target>

  <!-- Compile -->
  <target name="compile" depends="init" description="compile the source" >
    <copy todir="${build.dir}">
      <fileset dir="images" includes="*.png" />
    </copy>
    <javac srcdir="${src.dir}" destdir="${build.dir}" target="1.8" source="1.8">
      <classpath refid="classpath"/>
    </javac>
  </target>
  
  <!-- Jar -->
  <target name="build" depends="compile" description="generate the jar" >
    <manifestclasspath property="manifest.classpath" jarfile="${ant.project.name}.jar">
      <classpath refid="classpath" />
    </manifestclasspath>

    <jar destfile="${ant.project.name}.jar" compress="true">
      <fileset dir="${build.dir}" includes="**/*" />
      <!--fileset dir="images" includes="*.png" /-->
      <manifest>
        <attribute name="Main-Class" value="${main.class.name}" />
        <attribute name="Class-Path" value="${manifest.classpath}"/>   
      </manifest>
    </jar>
  </target>
  
  <!-- Run -->
  <target name="run" depends="build" description="runs the program" >
    <!-- java jar="${dist.dir}/${ant.project.name}.jar" fork="true" -->
    <java jar="${ant.project.name}.jar" fork="true" />
  </target>

  <!-- Distribution -->
  <target name="dist" depends="build" description="generate the distribution" >
    <mkdir dir="${dist.dir}/lib"/>
    <copy todir="${dist.dir}/lib">
      <fileset dir="lib" includes="*.jar" />
    </copy>
    
    <path id="dist.classpath">
      <fileset dir="${dist.lib.dir}" includes="*.jar" />
    </path>
    <manifestclasspath property="dist.manifest.classpath" jarfile="${dist.dir}/${ant.project.name}.jar">
      <classpath refid="dist.classpath" />
    </manifestclasspath>

    <jar destfile="${dist.dir}/${ant.project.name}.jar" basedir="${build.dir}" compress="true">
      <fileset dir="${build.dir}" includes="**/*" />
      <!--fileset dir="images" includes="*.png" /-->
      <manifest>
        <attribute name="Main-Class" value="${main.class.name}" />
        <attribute name="Class-Path" value="${dist.manifest.classpath}"/>   
      </manifest>
    </jar>
  </target>

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