java - Ant Freezes with no warning on exception -

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i have been experiencing weird problem can't find solution to. when running project through ant , there's uncaught exception, ant freezes absolutely no error. here build file. multi threaded environment, also

    <fileset id="masterlibs" dir="${lib.dir}">             <patternset>                     <include name="*.jar"/>             </patternset>     </fileset>      <target name="clean">             <delete dir="${build.dir}"/>     </target>     <target name="init">             <mkdir dir="${build.dir}"/>     </target>     <target name="compile" depends="init">             <javac srcdir="${src.dir}" destdir="${build.dir}">                     <classpath>                             <pathelement location="${build.dir}"/>                             <fileset refid="masterlibs"/>                     </classpath>             </javac>     </target>      <target name="run" depends="compile">             <java classname="stockdata.alerthandler" fork="true">                     <classpath>                             <pathelement location="${build.dir}"/>                             <fileset refid="masterlibs"/>                     </classpath>                     <arg line="true"/>                     <arg line="true"/>                     <arg line="true"/>                     <arg line="true"/>                     <arg line="false"/>                     <arg line="27_4"/>                      <arg line="false"/>             </java>     </target>

ctrl+break show dump of threads , indicate each doing (plus deadlocks). i'm guessing it's spawned alerthandler process , may easier debug outside ant environment.

if ctrl+break doesn't work (from article)

on unix platforms can send signal program using kill command. quit signal, handled jvm. example, on solaris can use command kill -quit process_id, process_id process number of java program.


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