[ 
https://issues.apache.org/jira/browse/PDFBOX-3777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tilman Hausherr updated PDFBOX-3777:
------------------------------------
    Component/s: AcroForm

> org.apache.pdfbox.cos.COSDictionary cannot be cast to 
> org.apache.pdfbox.cos.COSArray
> ------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-3777
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3777
>             Project: PDFBox
>          Issue Type: Bug
>          Components: AcroForm
>    Affects Versions: 2.0.5
>            Reporter: John Liston
>            Priority: Minor
>         Attachments: D1790B.PDF
>
>
>               public static void main(String[] args) {
>                               PDDocument pdDocument;
>                               try {
>                                              pdDocument = PDDocument.load(new 
> File("D1790B.PDF"));
>                               }
>                               catch (Exception e) {
>                                              throw new RuntimeException(e);
>                               }
>                               PDAcroForm pdAcroForm = 
> pdDocument.getDocumentCatalog().getAcroForm();
>                               if (pdAcroForm != null) {
>                                              try {
>                                                             List<PDField> 
> acroFields = pdAcroForm.getFields();
>                                                             List<PDField> 
> pdFields = new ArrayList<PDField>();
>                                                             for (PDField 
> pdField : acroFields) {
>                       // (modify fields)
>                                                             }
>                                                             
> pdAcroForm.setFields(pdFields);
>                                                             // flatten the 
> document to get rid of the buttons
>                                                             
> pdAcroForm.flatten();
>                                              }
>                                              catch (IOException e) {
>                                                             throw new 
> RuntimeException(e);
>                                              }
>                               }
>                }



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