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https://issues.apache.org/jira/browse/PDFBOX-2871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14623741#comment-14623741
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Tilman Hausherr commented on PDFBOX-2871:
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I'm not John but I remember that it goes through all the fonts on the system
and stores some of their info.
However this would mean for Roberto that the 10secs would be lost only once,
not for every PDF he is working on.
> Performance issue when filling the first PDTextField of an AcroForm
> -------------------------------------------------------------------
>
> Key: PDFBOX-2871
> URL: https://issues.apache.org/jira/browse/PDFBOX-2871
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.0
> Reporter: Maruan Sahyoun
> Assignee: Maruan Sahyoun
> Priority: Critical
> Labels: Appearance
> Fix For: 2.0.0
>
> Attachments: PDTextField.pdf, ProfilingOutput.png
>
>
> When filling the first PDTextField in a form the performance is slow. All
> other PDTextFields in the form are handled quickly.
> This code
> {code}
> PDTextField field = (PDTextField)
> doc.getDocumentCatalog().getAcroForm().getField("Textfield01");
> long start = System.nanoTime();
> field.setValue("ABCD");
> long end = System.nanoTime();
> double difference = (end - start)/1e6;
> System.out.println(difference);
> field = (PDTextField)
> doc.getDocumentCatalog().getAcroForm().getField("Textfield02");
> start = System.nanoTime();
> field.setValue("ABCD");
> end = System.nanoTime();
> difference = (end - start)/1e6;
> System.out.println(difference);
> {code}
> produces the following output
> {noformat}
> 9713.38
> 3.904
> {noformat}
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