// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-Java
try {
// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.getConfiguration();
// File guid
String guid = fileName;
// Create image or html handler
ViewerImageHandler imageHandler = new ViewerImageHandler(config);
// Set pdf file one page per sheet option to false, default value of this option is true
PdfFileOptions pdfFileOptions = new PdfFileOptions();
pdfFileOptions.setGuid(guid);
pdfFileOptions.getCellsOptions().setOnePagePerSheet(false);
//Get pdf file
FileContainer fileContainer = imageHandler.getPdfFile(pdfFileOptions);
//The pdf file stream
final InputStream pdfStream = fileContainer.getStream();
} catch (Exception exp) {
System.out.println("Exception: " + exp.getMessage());
exp.printStackTrace();
}