java.net.MalformedURLException: unknown protocol: c
   at java.net.URL.<init>(URL.java:574)
   at java.net.URL.<init>(URL.java:464)
   at java.net.URL.<init>(URL.java:413)
   at org.openide.filesystems.FileUtil.getArchiveFile(FileUtil.java:1975)
   at org.netbeans.modules.java.j2seplatform.libraries.JavadocForBinaryQueryLibraryImpl.isNormalizedURL(JavadocForBinaryQueryLibraryImpl.java:178)
   at org.netbeans.modules.java.j2seplatform.libraries.JavadocForBinaryQueryLibraryImpl.getNormalizedURL(JavadocForBinaryQueryLibraryImpl.java:149)
   at org.netbeans.modules.java.j2seplatform.libraries.JavadocForBinaryQueryLibraryImpl.findJavadoc(JavadocForBinaryQueryLibraryImpl.java:134)
   at org.netbeans.api.java.queries.JavadocForBinaryQuery.findJavadoc(JavadocForBinaryQuery.java:85)
   at org.netbeans.modules.java.source.JavadocHelper.findJavadoc(JavadocHelper.java:370)
   at org.netbeans.modules.java.source.JavadocHelper.access$100(JavadocHelper.java:94)
   at org.netbeans.modules.java.source.JavadocHelper$1.call(JavadocHelper.java:288)
   at org.netbeans.modules.java.source.JavadocHelper$1.call(JavadocHelper.java:285)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)