Review

On line 244, a PdfObject is fetched from a PdfArray. Since the array may
contain a null value, the object should be checked before it is used.

• missing/condition/null_check

com/itextpdf/text/pdf/SimpleBookmark.java

makeBookmarkParam(PdfArray, IntHashtable)

class SimpleBookmark {
	private static String makeBookmarkParam(PdfArray dest, IntHashtable pages)
	{
		StringBuffer s = new StringBuffer();
		PdfObject obj = dest.getPdfObject(0);
        if (obj.isNumber())
            s.append(((PdfNumber)obj).intValue() + 1);
        else
            s.append(pages.get(getNumber((PdfIndirectReference)obj))); //changed by ujihara 2004-06-13
		s.append(' ').append(dest.getPdfObject(1).toString().substring(1));
		for (int k = 2; k < dest.size(); ++k)
			s.append(' ').append(dest.getPdfObject(k).toString());
		return s.toString();
	}

}