package1 task is all wrong, but I can't figure out the error message.
what's meant by "the file attribute is required"?

D:\>
D:\>ant
Buildfile: build.xml

clean:
  [delete] Deleting directory D:\java\classes

prepare:
   [mkdir] Created dir: D:\java\classes

compile:
   [javac] Compiling 2 source files to D:\java\classes

manifest1:

manifest2:

package1:

BUILD FAILED
D:\build.xml:44: the file attribute is required

Total time: 4 seconds
D:\>type build.xml
<project name="XHTML" default="package2">

       <property name="outputDir" value="java\classes\" />
       <property name="dummyDir" value="java\classes\" />
       <property name="sourceDir" value="java\src\atreides\xhtml\" />
       <property name="javadocDir" value="java\src\atreides\xhtml\" />
       <property name="mainClass1" value="HelloWorldSwing" />
       <property name="mainClass2" value="Test16" />
       <property name="pkgPath" value="atreides.xhtml." />
       <property name="jarPath" value="java\src\org\w3c\tidy\Tidy.jar"
/>

       <target name="clean">
               <delete dir="${outputDir}" />
       </target>

       <target name="prepare" depends="clean">
               <mkdir dir="${outputDir}" />
       </target>

       <target name="compile" depends="prepare">
               <javac srcdir="${sourceDir}"
                       destdir="${outputDir}"
                       classpath="${jarPath}"
               />
       </target>

       <target name="manifest1" depends="compile">
               <manifest file="${outputDir}/MANIFEST.MF">
                       <attribute name="Main-Class"
value="${pkgPath}${mainClass1}" />
               </manifest>
       </target>

       <target name="manifest2" depends="manifest1">
               <manifest file="${outputDir}/MANIFEST.MF">
                       <attribute name="Main-Class"
value="${pkgPath}${mainClass2}" />
               </manifest>
       </target>

       <target name="package1" depends="manifest2">
               <jar
                       destfile="${mainClass1}.jar"
                       basedir="${sourceDir}"
                />
               <manifest>
               </manifest>
       </target>

       <target name="package2" depends="package1">
               <jar jarfile="${outputDir}/${mainClass2}.jar"
               basedir="${outputDir}"
               manifest="${outputDir}/MANIFEST.MF" />
       </target>
</project>

D:\>

thanks,

Thufir