تدوير PDF في SDK جافا

    package com.aspose.asposecloudpdfusecases.change_layout;

import java.io.File;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import com.aspose.asposecloudpdf.api.PdfApi;
import com.aspose.asposecloudpdf.model.AsposeResponse;
import com.aspose.asposecloudpdf.model.Rotation;
import com.aspose.asposecloudpdfusecases.acroforms.AcroformHelper;
import com.aspose.asposecloudpdfusecases.annotations.AnnotationsHelper;

public class RotateDocumentPages {
    public static void Perform() {
        String REMOTE_FOLDER   = "Your_Temp_Pdf_Cloud";
	    String LOCAL_FOLDER    = "c:\\Samples";
	    String PDF_DOCUMENT    = "sample.pdf";
        String PDF_OUTPUT      = "rotate_document_pages_output.pdf";

        String ROTATE_PAGES_ANGLE = Rotation.ON90.toString();
	    String ROTATE_PAGES       = "2-3";

        try {
            PdfApi pdfApi = new PdfApi(API_KEY, API_SECRET);

            // upload local PDF file to remote storage
            File file = new File(Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString());
            pdfApi.uploadFile(Path.of(REMOTE_FOLDER , PDF_DOCUMENT).toString(), file, null);
            System.out.println(String.format("File '%s' successfully uploaded!", Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString()));

            AsposeResponse response = pdfApi.postDocumentPagesRotate(PDF_DOCUMENT, ROTATE_PAGES_ANGLE, ROTATE_PAGES, null, REMOTE_FOLDER, null);
            if (response.getCode() != 200)
                System.err.println("Error: unexpected error when rotation pages! '" + response.getStatus() + "'");
            else {
                // download changed PDF file from remote folder...
                    File f = pdfApi.downloadFile(Path.of(REMOTE_FOLDER , PDF_DOCUMENT).toString(), null, null);
                    java.nio.file.Files.copy(Path.of(f.getPath()), Path.of(LOCAL_FOLDER, PDF_OUTPUT), StandardCopyOption.REPLACE_EXISTING);
                    System.out.println(String.format("File '%s' successfully dowloaded!", Path.of(LOCAL_FOLDER, PDF_OUTPUT).toString()));                
                    System.out.println("Successfully rotated pages in document ! '" + PDF_OUTPUT + "'");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}