valerybokov edited a comment on pull request #107:
URL: https://github.com/apache/pdfbox/pull/107#issuecomment-890298627


   Hi, @THausherr!
   1 Maybe this is not a problem and it will not be. I found that 
COSArray.setString can set null as a value. Some methods, such as 
COSArray.indexOf, use an objects collection with no null checks.
   2 PDAnnotation.getBorder. If border.size() >= 3 don't need to "create a copy 
to avoid changing the PDF"?
   3 static final fields of PDRectangle are modifiable (LETTER, LEGAL etc.)
   4 TrailerValidationProcess.checkTrailersForLinearizedPDF14. Row 96. A last 
variable can be null.
   5 PreflightConfiguration.SHADING_PATTERN_PROCESS. Typo in value. Double 'd'.
   6 RubberStampAnnotationValidator. Maybe wrong comment: BudderStampAnnotation 
or RubberStampAnnotation
   7 class Decrypt. Wrong command name (row 41: "decrpyt")
   8 DomXmpParser.manageDefinedType (382, 394, 419). A parseLiDescription 
method able to return null. Can ast variable be null here.
   9 TiffSchema.IMAGE_LENGHT instead of IMAGE_LENGTH
   
   I remember about preflight but these notes were written before information 
about preflight removing.


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