Building(With ant) a jar with it's main in the default package

I was w开发者_高级运维ondering if anyone knew how to set the Main-class property in an Ant Build xml to look in the default package? I've tried just "Main", but it doesn't seem to find it.

You should use Main-Class attribute of manifest:

<jar jarfile="${jar.name}">
  <fileset dir="${classes.dir}">
     <include name="**/*.*"/>
  </fileset>
  <manifest>
     <attribute name="Main-Class" value="MyApp"/>
  </manifest>
</jar>

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