Data read has a different length than the expected

try {
            Long contentLength = Long.valueOf(saveFile.getBytes().length);
            AmazonS3 client = new AmazonS3Client(new BasicAWSCredentials(awsAccessKey, awsSecretKey));
            /* ObjectMetadata meta = new ObjectMetadata();                            
            meta.setContentLength(contentLength);
            meta.setContentType(contentType);
            client.putObject(bucket, saveFile, in, meta);
            client.setObjectAcl(bucket, saveFile, CannedAccessControlList.PublicRead); */

            GeneratePresignedUrlRequest imgURL = new GeneratePresignedUrlRequest(bucket, saveFile);
            destFile = client.generatePresignedUrl(imgURL).toString();
        } catch (Exception ex) {
            System.out.println(ex);
        }

I was trying to upload a photo into Amazon-S3, and it said "Data read has a different length than the expected". Even though I could avoid this error by changing

meta.setContentLength(saveFile.getBytes().length);

But it is still upload a damaged/corrupted image.