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Comparison method violates its general contract!
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Comparison method violates its general contract!
java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeHi(TimSort.java:868) at java.util.TimSort.mergeAt(TimSort.java:485) at java.util.TimSort.mergeCollapse(TimSort.java:408) at java.util.TimSort.sort(TimSort.java:214) at java.util.TimSort.sort(TimSort.java:173) at java.util.Arrays.sort(Arrays.java:659) at java.util.Collections.sort(Collections.java:217) at org.apache.pdfbox.util.PDFTextStripper.writePage(PDFTextStripper.java:565) at org.apache.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:457) at org.apache.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:381) at org.apache.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:340) at net.sf.jabref.imports.PdfContentImporter.importEntries(PdfContentImporter.java:238) at net.sf.jabref.imports.EntryFromPDFCreator.createBibtexEntry(EntryFromPDFCreator.java:74) at net.sf.jabref.imports.EntryFromFileCreator.createEntry(EntryFromFileCreator.java:84) at net.sf.jabref.imports.EntryFromFileCreatorManager.addEntrysFromFiles(EntryFromFileCreatorManager.java:125) at net.sf.jabref.FindUnlinkedFilesDialog$8.run(FindUnlinkedFilesDialog.java:545) at java.lang.Thread.run(Thread.java:745)