Set PDF Viewer Preference in Java

import com.spire.pdf.*;

public class ViewerPreference {
    public static void main(String[] args) {

        //Load the PDF file
        PdfDocument pdf = new PdfDocument();
        pdf.loadFromFile("Additional.pdf");

        //Set viewer preference
        pdf.getViewerPreferences().setCenterWindow(true);
        pdf.getViewerPreferences().setDisplayTitle(false);
        pdf.getViewerPreferences().setFitWindow(true);
        pdf.getViewerPreferences().setHideMenubar(true);
        pdf.getViewerPreferences().setHideToolbar(true);
        pdf.getViewerPreferences().setPageLayout(PdfPageLayout.Single_Page);
        //pdf.getViewerPreferences().setPageMode(PdfPageMode.Full_Screen);
        //pdf.getViewerPreferences().setPrintScaling(PrintScalingMode.App_Default);

        //Save the file.
        pdf.saveToFile("ViewerPreference.pdf");
        //Close
        pdf.close();
    }
}