mulitple files upload doesnt work

I am using the java sdk to upload files on dropbox. Since i want to upload a bunch of them, i tried the chunck upload method. This is what i got.

   public MultipleUpload addFile(File file,String path) throws DbxApiException, DbxException, IOException {         
            in = new FileInputStream(file);
            sessionId = client.files().uploadSessionStart(false).uploadAndFinish(in).getSessionId();
            
            offset = file.length();
            cursor = new UploadSessionCursor(sessionId, offset);
            int index =file.getAbsolutePath().indexOf(path);
            commitInfo = new CommitInfo(path, WriteMode.OVERWRITE, false, new Date(), false);
        
            UploadSessionFinishArg arg = new UploadSessionFinishArg(cursor, commitInfo);
             
            entries.add(arg);
            return this;
        }
     
        public void commit() throws DbxException, InterruptedException {
           int count=0;
           LaunchEmptyResult result = client.files().uploadSessionFinishBatch(entries);
           while (count<10){
                    
            try { if(!client.files().uploadSessionFinishBatchCheck(result.getAsyncJobIdValue()).isInProgress()) {
                //all ok
                System.out.println("(((END"+new Date());
                return;
            }
            System.out.println("Try Again");
            Thread.sleep(5000);                
                        
        } catch (DbxException  e){
            e.printStackTrace();
         } catch (InterruptedException e) {
            e.printStackTrace();
         }
      }   
   }
    

and in order to use it i call

addFile(new File("localfile.xxx"), "/testing/builderTest/bw.tmp")
.addFile(new File("localfile.xxx"), "/testing/builderTest/aw.tmp")
.commit();

But this is not uploading anything, and it doesnt return any error either.

any help is highly appreciated.