Unexpected response code 400

Thank you for the clarification.

Hola,

Yo engo el mismo problema, pero creo estar usando la versión más reciente de la api java de dropbox:

El código que estoy usando es:

package dropbox;

// Include the Dropbox SDK.
import com.dropbox.core.*;
import com.fasterxml.jackson.core.*;
import java.io.*;
import java.util.Locale;

    
public class Main {

    public static void main(String[] args) throws IOException, DbxException{
        
        // 1) Provide app key and secret to the new DbxWebAuthNoRedirect object.
        final String APP_KEY = "asdf";
        final String APP_SECRET = "asdf";
        
        DbxAppInfo appInfo = new DbxAppInfo(APP_KEY, APP_SECRET);
        
        DbxRequestConfig config = new DbxRequestConfig(
            "JavaTutorial/1.0", Locale.getDefault().toString());
        
        DbxWebAuthNoRedirect webAuth = new DbxWebAuthNoRedirect(config, appInfo);
        
        // 2) start the OAuth flow
        String authorizeUrl = webAuth.start();
        // Have the user sign in and authorize your app.
        System.out.println("1. Go to: " + authorizeUrl);
        System.out.println("2. Click \"Allow\" (you might have to log in first)");
        System.out.println("3. Copy the authorization code.");
        String code = new BufferedReader(new InputStreamReader(System.in)).readLine().trim();        
        
        DbxAuthFinish authFinish = webAuth.finish(code);
        String accessToken = authFinish.accessToken;

        DbxClient client = new DbxClient(config, accessToken);
        System.out.println("Linked account: " + client.getAccountInfo().email);        
        
    }
}

Y obtengo el siguiente error:

Exception in thread "main" com.dropbox.core.DbxException$BadResponse: unexpected response code: 400
	at com.dropbox.core.DbxClient$4.handle(DbxClient.java:350)
	at com.dropbox.core.DbxClient$4.handle(DbxClient.java:346)
	at com.dropbox.core.DbxRequestUtil.doGet(DbxRequestUtil.java:242)
	at com.dropbox.core.DbxClient.doGet(DbxClient.java:2167)
	at com.dropbox.core.DbxClient.getAccountInfo(DbxClient.java:346)
	at dropbox.Main.main(Main.java:49)
C:\Users\tnogales\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 2 seconds)

Me estoy rompiendo la cabeza y no encuentro la solución :(