Bonjour à tous

j'essaie de generer la javadoc avec la task ant mais j'ai un message d'erreur
que voici

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Generating Javadoc
Javadoc execution
Loading source files for package com.exportdatas.beans...
Loading source files for package com.exportdatas.database...
Loading source files for package com.exportdatas.exportdata...
Loading source files for package com.exportdatas.tools...
Constructing Javadoc information...
Standard Doclet version 1.5.0_01
Building tree for all the packages and classes...
java.lang.IllegalArgumentException
    at sun.net.www.ParseUtil.decode(ParseUtil.java:183)
    at sun.misc.URLClassPath$FileLoader.<init>(URLClassPath.java:863)
    at sun.misc.URLClassPath$3.run(URLClassPath.java:319)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.misc.URLClassPath.getLoader(URLClassPath.java:313)
    at sun.misc.URLClassPath.getLoader(URLClassPath.java:290)
    at sun.misc.URLClassPath.findResource(URLClassPath.java:141)
    at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
    at java.lang.ClassLoader.getResource(ClassLoader.java:977)
    at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1159)
    at javax.xml.parsers.SecuritySupport$4.run(SecuritySupport.java:72)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.xml.parsers.SecuritySupport.getResourceAsStream(SecuritySupport.java:65)
    at javax.xml.parsers.FactoryFinder.findJarServiceProvider(FactoryFinder.java:213)
    at javax.xml.parsers.FactoryFinder.find(FactoryFinder.java:185)
    at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:107)
    at com.sun.tools.doclets.internal.toolkit.builders.LayoutParser.parseXML(LayoutParser.java:72)
    at com.sun.tools.doclets.internal.toolkit.builders.ClassBuilder.build(ClassBuilder.java:108)
    at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:155)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:164)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
    at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
    at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
    at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
    at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
    at com.sun.tools.javadoc.Start.begin(Start.java:128)
    at com.sun.tools.javadoc.Main.execute(Main.java:41)
    at com.sun.tools.javadoc.Main.main(Main.java:31)
com.sun.tools.doclets.internal.toolkit.util.DocletAbortException
    at com.sun.tools.doclets.internal.toolkit.builders.LayoutParser.parseXML(LayoutParser.java:79)
    at com.sun.tools.doclets.internal.toolkit.builders.ClassBuilder.build(ClassBuilder.java:108)
    at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:155)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:164)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
    at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
    at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
    at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
    at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
    at com.sun.tools.javadoc.Start.begin(Start.java:128)
    at com.sun.tools.javadoc.Main.execute(Main.java:41)
    at com.sun.tools.javadoc.Main.main(Main.java:31)
com.sun.tools.doclets.internal.toolkit.util.DocletAbortException
    at com.sun.tools.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:159)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:164)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:106)
    at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
    at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
    at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
    at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
    at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
    at com.sun.tools.javadoc.Start.begin(Start.java:128)
    at com.sun.tools.javadoc.Main.execute(Main.java:41)
    at com.sun.tools.javadoc.Main.main(Main.java:31)

et les tasks ...

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...
  <!-- init-->
  <target name="init">
    <property name="sourceDir" value="../src" />
    <property name="outputDir" value="../classes" />
    <property name="resourceDir" value="../classes/com/exportdatas/cfg" />
    <property name="srcresourceDir" value="../src/com/exportdatas/cfg" /> 	 
    <property name="javadocDir" value="../docs/api" /> 	
 </target>
...
 
 
<!-- Creation repertoires destination-->
  <target name="makeOutputDir" depends="cleanUpOutputDir">
    <mkdir dir="${outputDir}" />
    <mkdir dir="${resourceDir}" />
    <mkdir dir="${javadocDir}" />
    <copy todir="${resourceDir}">
    	<fileset dir="${srcresourceDir}"/>
     </copy>
  </target>
<!-- Compilation-->
  <target name="compileProject" depends="makeOutputDir">
    <javac srcdir="${sourceDir}" destdir="${outputDir}" >
    	<classpath refid="compile.classpath"/>
    </javac>
    <javadoc sourcepath="${sourceDir}" destdir="${javadocDir}" packagenames="com.*">
    <packageset dir="${sourceDir}" defaultexcludes="yes"/>
    </javadoc>
 
 
  </target>
merci d'avance et bonne journée