added jar target

examples/energest-demo/build.xml

@@ -4,6 +4,7 @@
   <property name="java" location="src"/>
   <property name="build" location="build"/>
   <property name="lib" location="lib"/>
+  <property name="dist" location="dist"/>
   <property name="args" value=""/>
 
 	<target name="init">
@@ -33,6 +34,7 @@ Starts demo application listening on COM1 and tracking the first node.
 
   <target name="clean" depends="init">
     <delete dir="${build}"/>
+    <delete dir="${dist}"/>
   </target>
 
   <target name="run" depends="init, compile">
@@ -46,4 +48,19 @@ Starts demo application listening on COM1 and tracking the first node.
     </java>
   </target>
 
+  <target name="jar" depends="clean, init, compile">
+    <mkdir dir="${dist}"/>
+    <jar destfile="${dist}/energest.jar" basedir="${build}">
+      <fileset dir="${build}"/>
+      <manifest>
+        <attribute name="Main-Class" value="Demo"/>
+        <attribute name="Class-Path" value=". jcommon-1.0.10.jar jfreechart-1.0.6.jar"/>
+      </manifest>
+    </jar>
+    <mkdir dir="${dist}"/>
+    <copy todir="${dist}">
+      <fileset dir="${lib}"/>
+    </copy>
+  </target>
+
 </project>