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// initialize PdfFormat
PdfFormat pdfFormat = new PdfFormat(Common.mapSourceFilePath(path));
// get document properties
PdfMetadata properties = pdfFormat.getDocumentProperties();
// get author
System.out.printf("Author: %s", properties.getAuthor());
// get producer
System.out.printf("Producer: %s", properties.getProducer());
// get created date of the document
System.out.printf("Created Date: %s", properties.getCreatedDate());