RTFM, literally

[THUFIR HAWAT]

the build file:

<project name="XHTML" default="package2">

        <property name="outputDir" value="java\classes\" />
        <property name="sourceDir" 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 jarfile="${outputDir}/${mainClass1}.jar" />
                <manifest>
                </manifest>
        </target>

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


going through this, I don't understand the line:

<jar jarfile="${outputDir}/${mainClass1}.jar" />

the outputDir determines the path to the jarfile, named mainClass1?

also, I'm getting an error

D:\>
D:\>
D:\>
D:\>
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:
      [jar] Building MANIFEST-only jar: D:\java\classes\HelloWorldSwing.jar
      [jar] Building jar: D:\java\classes\HelloWorldSwing.jar

BUILD FAILED
D:\build.xml:39: the file attribute is required

Total time: 4 seconds
D:\>

but can't find reference to "the file attribute" in the manual.  I've
found an API for ant at
<http://www.jajakarta.org/ant/ant-1.6.1/docs/ja/manual/api/org/apache/tools/ant/taskdefs/Manifest.html>


besides reading the manual front to back, where can I find out about
this "file attribute" and how "jarfile" works?

thanks,

Thufir

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