Chỉnh sửa và cập nhật chữ ký Image được đặt trong tệp Odp

        
// Set up input Odp file
String filePath = "input.odp";
// Set up output file
String outputFilePath = "output.odp";

// Instantiate Signature for input file
Signature signature = new Signature(filePath);

// Id of signature which is supposed to be updated
// such Id might be got as a result of search operation
String id = "ff988ab1-7403-4c8d-8db7-f2a56b9f8530";

// provide signature features to update
// set up particular signature id
ImageSignature signatureToUpdate = new ImageSignature(id);

// specify signature width
signatureToUpdate.setWidth(170);
// specify signature height
signatureToUpdate.setHeight(250);
// set left position
signatureToUpdate.setLeft(10);
// set top position
signatureToUpdate.setTop(10);

// update signature
Boolean updateResult = signature.update(outputFilePath, signatureToUpdate);

// process updation result
if (updateResult)
{
        System.out.println("Signature was updated successfully!");
}