Cacher is the code snippet organizer for pro developers

// 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();
	// Create html handler
	ViewerHtmlHandler htmlHandler = new ViewerHtmlHandler(config);
	String guid = fileName;

	// Set rotation angle 90 for page number 3
	RotatePageOptions rotateOptions = new RotatePageOptions(3, rotationAngle);

	// Perform page rotation
	htmlHandler.rotatePage(guid, rotateOptions);
	// Set html options to include rotate transformation
	HtmlOptions options = new HtmlOptions();
	options.setTransformations(Transformation.Rotate);

	// Get All pages
	List<PageHtml> pages = htmlHandler.getPages(guid, options);

	// Save pages
	for (PageHtml page : pages) {
		Utilities.saveAsHtml(page.getPageNumber() + "_" + fileName, page.getHtmlContent());
	}

} catch (Exception exp) {
	System.out.println("Exception: " + exp.getMessage());
	exp.printStackTrace();
}