qr code generator in java

1public static BufferedImage generateQRCodeImage(String barcodeText) throws Exception {
2    QRCodeWriter barcodeWriter = new QRCodeWriter();
3    BitMatrix bitMatrix = 
4      barcodeWriter.encode(barcodeText, BarcodeFormat.QR_CODE, 200, 200);
5
6    return MatrixToImageWriter.toBufferedImage(bitMatrix);
7}