Как сделать скриншот экрана и отправить его на DropBox по API-токену

     1. **Main.java**

package com.company;

import com.dropbox.core.DbxException;
import com.dropbox.core.DbxRequestConfig;
import com.dropbox.core.v2.DbxClientV2;
import com.dropbox.core.v2.files.UploadErrorException;

import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.filechooser.FileSystemView;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.net.*;
import java.io.*;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import static java.lang.Thread.sleep;
import static sun.misc.PostVMInitHook.run;

public class Main extends JFrame {
    public static void main(String[] args) throws IOException {
        MyThread thread = new MyThread();
        String ACCESS_TOKEN = "Kq8GMFb34........5rYqV2AIQ0TSA1E2RnLV01liMzc8v";

        DbxRequestConfig config = DbxRequestConfig.newBuilder("dropbox/java-tutorial").build();
        DbxClientV2 client = new DbxClientV2(config, ACCESS_TOKEN);

        URL USER_IP = new URL("http://checkip.amazonaws.com");
        BufferedReader in = new BufferedReader(new InputStreamReader(USER_IP.openStream()));
        String ip = in.readLine();

        JFrame main = new JFrame("Cyberdef v1.0");
        main.setSize(450,80);
        main.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        main.setLayout(new FlowLayout());
        main.setResizable(false);
        main.setVisible(true);
        JLabel textIP = new JLabel("YOUR IP: " + ip);
        textIP.setForeground(Color.red);
        JButton run = new JButton("Run");
        JButton stop = new JButton("Stop");
        stop.setEnabled(false);
        main.add(textIP);
        main.add(run);
        main.add(stop);

        // Listeners
        ActionListener running = new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e){
                thread.start();
                run.setEnabled(false);
                stop.setEnabled(true);
                System.out.println("Was button pressed run " + "IP: " + ip);


            }

        };
        run.addActionListener(running);

        ActionListener stopping = new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                thread.stop();
                run.setEnabled(true);
                stop.setEnabled(false);
                System.out.println("Was button pressed stop " + "IP: " + ip);
            }
        };
        stop.addActionListener(stopping);
    }
}

 2. **MyThread.java**
      package com.company;

import com.dropbox.core.DbxException;
import com.dropbox.core.DbxRequestConfig;
import com.dropbox.core.v2.DbxClientV2;
import com.dropbox.core.v2.files.UploadErrorException;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

public class MyThread extends Thread {

        @Override
    public void run()
    {
        String ACCESS_TOKEN = "sl....................................89oso1vWDLW6JVJ5K4srOOD1-3d8YKr7ypqFKGHL1M7MRuEQxcQUXlSTohDmM0rZhDZy8Ak4nR8";

       
        DbxRequestConfig config = DbxRequestConfig.newBuilder("dropbox/java-tutorial").build();
        DbxClientV2 client = new DbxClientV2(config, ACCESS_TOKEN);

        for(;;)
        {
            BufferedImage image = null;
            try {
                image = new Robot().createScreenCapture(new 
                Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));

                SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd_HHmmss");
                String date = format.format(new Date());

                ByteArrayOutputStream os = new ByteArrayOutputStream();

                ImageIO.write(image, "png", os);
                byte[] bytes = os.toByteArray();
                InputStream is = new ByteArrayInputStream(bytes);

                    client.files().uploadBuilder("/" + date + ".png").uploadAndFinish(is);

                sleep(3250);

            } catch (AWTException e) {
                e.printStackTrace();
            } catch (`` e) {
                e.printStackTrace();
            } catch ( e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();}

        }
    }

}

3. Вывод(консоль):


 com.dropbox.core.BadResponseException: Bad JSON: expected object value.
 at [Source: ; line: 1, column: 1]
    at com.dropbox.core.DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:347)
    at com.dropbox.core.DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:324)
    at com.dropbox.core.DbxUploader.finish(DbxUploader.java:268)
    at com.dropbox.core.DbxUploader.uploadAndFinish(DbxUploader.java:126)
    at com.dropbox.core.DbxUploader.uploadAndFinish(DbxUploader.java:96)
    at com.dropbox.core.v2.DbxUploadStyleBuilder.uploadAndFinish(DbxUploadStyleBuilder.java:92)
    at com.company.MyThread.run(MyThread.java:42)
Caused by: com.fasterxml.jackson.core.JsonParseException: expected object value.
 at [Source: ; line: 1, column: 1]
    at com.dropbox.core.stone.StoneSerializer.expectStartObject(StoneSerializer.java:91)
    at com.dropbox.core.ApiErrorResponse$Serializer.deserialize(ApiErrorResponse.java:53)
    at com.dropbox.core.ApiErrorResponse$Serializer.deserialize(ApiErrorResponse.java:36)
    at com.dropbox.core.stone.StoneSerializer.deserialize(StoneSerializer.java:55)
    at com.dropbox.core.DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:343)
    ... 6 more

   
Скажите пожалуйста в чём проблема, заранее спасибо!