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From Chia-Hung Lin <cli...@googlemail.com>
Subject NPE is thrown when generating javadoc
Date Fri, 14 Mar 2014 14:50:59 GMT
I am not sure if this is jdk bug (maybe not). Just write down as side note.

When compiling with jdk 6 (java version "1.6.0_25") following
exception is thrown. Switching to jdk 7, this api doc exception goes
away. Came across to find on the interest there is a same problem
report, but no bug database link is provided.

[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-javadoc-plugin:2.8.1:jar (default) on
project hama-core: MavenReportException: Error while creating archive:
[ERROR] Exit code: 1 - java.lang.NullPointerException
[ERROR] at com.sun.tools.javac.jvm.ClassReader.findMethod(ClassReader.java:974)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readEnclosingMethodAttr(ClassReader.java:926)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readMemberAttr(ClassReader.java:909)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readClassAttr(ClassReader.java:1053)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readClassAttrs(ClassReader.java:1067)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readClass(ClassReader.java:1560)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:1658)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:1845)
[ERROR] at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:1777)
[ERROR] at com.sun.tools.javac.code.Symbol.complete(Symbol.java:386)
[ERROR] at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:763)
[ERROR] at com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:695)
[ERROR] at com.sun.tools.javadoc.ClassDocImpl.getFlags(ClassDocImpl.java:105)
[ERROR] at com.sun.tools.javadoc.ClassDocImpl.isAnnotationType(ClassDocImpl.java:116)
[ERROR] at com.sun.tools.javadoc.DocEnv.isAnnotationType(DocEnv.java:574)
[ERROR] at com.sun.tools.javadoc.DocEnv.getClassDoc(DocEnv.java:546)
[ERROR] at com.sun.tools.javadoc.PackageDocImpl.getClasses(PackageDocImpl.java:154)
[ERROR] at com.sun.tools.javadoc.PackageDocImpl.addAllClassesTo(PackageDocImpl.java:170)
[ERROR] at com.sun.tools.javadoc.RootDocImpl.classes(RootDocImpl.java:178)
[ERROR] at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:96)
[ERROR] at com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDoclet.java:64)
[ERROR] at com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
[ERROR] at com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
[ERROR] at com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
[ERROR] at com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
[ERROR] at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
[ERROR] at com.sun.tools.javadoc.Start.begin(Start.java:128)
[ERROR] at com.sun.tools.javadoc.Main.execute(Main.java:41)
[ERROR] at com.sun.tools.javadoc.Main.main(Main.java:31)
[ERROR]

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