...
  <target name="runhyp">
    <java fork="true" classname="${hypclass}" classpath="${hypjar}" 
          args="${hypfile} -dbname.0 ${hypalias} -port ${hypport}"/>
  </target>
...

...
 <target name="stophyp">
	  <sql classpath="${hypjar}" driver="${hypdriver}"
	    url="${hypurl}:${hypport}/${hypalias}"
	    userid="........." password="........."
	    autocommit="true">SHUTDOWN</sql>
  </target>
...

...
stophyp:
      [sql] Executing commands
      [sql] 1 of 1 SQL statements executed successfully
BUILD SUCCESSFUL
Total time: 375 milliseconds