java.lang.AbstractMethodError

docfetcher | *anonymous | 2 months ago
  1. 0

    AbstractMethodError

    docfetcher | 2 years ago | *anonymous
    java.lang.AbstractMethodError
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    How to test a generic class?

    Google Groups | 9 months ago | Vincent Privat
    java.lang.AssertionError: Abstract delegation: AbstractSet's equals method delegates to an abstract method: null For more information, go to: http://www.jqno.nl/equalsverifier/errormessages

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    Root Cause Analysis

    1. java.lang.AbstractMethodError

      No message provided

      at java.lang.String.valueOf()
    2. Java RT
      String.valueOf
      1. java.lang.String.valueOf(Unknown Source)
      1 frame
    3. Apache Commons Logging
      Jdk14Logger.warn
      1. org.apache.commons.logging.impl.Jdk14Logger.warn(Jdk14Logger.java:271)
      1 frame
    4. Apache PDFBox
      PDFTextStripper.writeText
      1. org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:570)
      2. org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:268)
      3. org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
      4. org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:215)
      5. org.apache.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:460)
      6. org.apache.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:385)
      7. org.apache.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:344)
      7 frames
    5. net.sourceforge.docfetcher
      IndexingQueue$2.run
      1. net.sourceforge.docfetcher.model.parse.PdfParser.parse(PdfParser.java:115)
      2. net.sourceforge.docfetcher.model.parse.ParseService.doParse(ParseService.java:265)
      3. net.sourceforge.docfetcher.model.parse.ParseService.parse(ParseService.java:233)
      4. net.sourceforge.docfetcher.model.index.file.FileContext.index(FileContext.java:146)
      5. net.sourceforge.docfetcher.model.index.file.FileIndex$1.handleFile(FileIndex.java:295)
      6. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.runWithHtmlPairing(HtmlFileLister.java:124)
      7. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.doRun(HtmlFileLister.java:57)
      8. net.sourceforge.docfetcher.util.Stoppable.run(Stoppable.java:57)
      9. net.sourceforge.docfetcher.model.index.file.FileIndex.visitDirOrZip(FileIndex.java:282)
      10. net.sourceforge.docfetcher.model.index.file.FileIndex.access$200(FileIndex.java:51)
      11. net.sourceforge.docfetcher.model.index.file.FileIndex$1.handleDir(FileIndex.java:393)
      12. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.runWithHtmlPairing(HtmlFileLister.java:145)
      13. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.doRun(HtmlFileLister.java:57)
      14. net.sourceforge.docfetcher.util.Stoppable.run(Stoppable.java:57)
      15. net.sourceforge.docfetcher.model.index.file.FileIndex.visitDirOrZip(FileIndex.java:282)
      16. net.sourceforge.docfetcher.model.index.file.FileIndex.access$200(FileIndex.java:51)
      17. net.sourceforge.docfetcher.model.index.file.FileIndex$1.handleDir(FileIndex.java:393)
      18. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.runWithHtmlPairing(HtmlFileLister.java:145)
      19. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.doRun(HtmlFileLister.java:57)
      20. net.sourceforge.docfetcher.util.Stoppable.run(Stoppable.java:57)
      21. net.sourceforge.docfetcher.model.index.file.FileIndex.visitDirOrZip(FileIndex.java:282)
      22. net.sourceforge.docfetcher.model.index.file.FileIndex.access$200(FileIndex.java:51)
      23. net.sourceforge.docfetcher.model.index.file.FileIndex$1.handleDir(FileIndex.java:393)
      24. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.runWithHtmlPairing(HtmlFileLister.java:145)
      25. net.sourceforge.docfetcher.model.index.file.HtmlFileLister.doRun(HtmlFileLister.java:57)
      26. net.sourceforge.docfetcher.util.Stoppable.run(Stoppable.java:57)
      27. net.sourceforge.docfetcher.model.index.file.FileIndex.visitDirOrZip(FileIndex.java:282)
      28. net.sourceforge.docfetcher.model.index.file.FileIndex.doUpdate(FileIndex.java:159)
      29. net.sourceforge.docfetcher.model.TreeIndex.update(TreeIndex.java:148)
      30. net.sourceforge.docfetcher.model.index.Task.update(Task.java:98)
      31. net.sourceforge.docfetcher.model.index.IndexingQueue.threadLoop(IndexingQueue.java:193)
      32. net.sourceforge.docfetcher.model.index.IndexingQueue.access$100(IndexingQueue.java:46)
      33. net.sourceforge.docfetcher.model.index.IndexingQueue$2.run(IndexingQueue.java:118)
      33 frames