A trimmed down version of PDFRenderer, which only validates a PDF's password.
File pdf = ...
String password = ...
PdfValidationResult validationResult = PdfValidator.validate(pdf, password);
switch(validationResult) {
case VALID:
case INVALID_PDF:
case INCORRECT_PASSWORD:
case UNKNOWN:
case FILE_NOT_FOUND:
}If you only want to check if a PDF is password protected, then PdfValidator.isPasswordProtected() can also be used. Don't use them together though.