Question

I am following Meera Subbarao to create java docs using umlgraph but getting this error message:

build.xml: Reference java.classpath not found.

Could somebody help me find what I am doing wrong?
Thanks in advance for helping me out.

My ant target is:

<target name="javadocs" description="generates javadoc and also UML Diagram">
    <mkdir dir="${reports.dir}/javadoc"/>
    <javadoc sourcepath="${src.dir}"
             packagenames="com.myproject.*"
             destdir="${reports.dir}/javadoc"
             classpathref="java.classpath"
             private="true">
        <doclet name="org.umlgraph.doclet.UmlGraphDoc" path="lib/UMLGraph.jar">
            <param name="-attributes" />
            <param name="-operations" />
            <param name="-qualify" />
            <param name="-types" />
            <param name="-visibility" />
        </doclet>
    </javadoc>
    <apply executable="dot" dest="${reports.dir}" parallel="false">
        <arg value="-Tpng"/>
        <arg value="-o"/>
        <targetfile/>
        <srcfile/>
        <fileset dir="${reports.dir}" includes="*.dot"/>
        <mapper type="glob" from="*.dot" to="*.png"/>
    </apply>
</target>

Answer 1

The reason for the error message here is this attribute on your javadoc element: classpathref="java.classpath".

To use this, you have to define a path element in your build file with id="java.classpath", like this:

<path id="java.classpath">
   ...
</path>