import com.google.zxing.Writer;
import com.google.zxing.WriterException;
import com.google.zxing.common.ByteMatrix;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.google.zxing.qrcode.encoder.Encoder;
import com.google.zxing.qrcode.encoder.QRCode;
-import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import java.util.Hashtable;