Read QR Code image using Java Program

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class QRCode {
public static void main(String[] args) throws WriterException, IOException, NotFoundException {
String charset = "UTF-8"; // or "ISO-8859-1"
Hashtable hintMap = new Hashtable();
hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
String qrCodeFilePath = "C:\\QRCode.png";
System.out.println("Data read from QR Code: " + readQRCode(qrCodeFilePath, charset, hintMap));

} public static String readQRCode(String filePath, String charset, Hashtable hintMap) throws FileNotFoundException, IOException, NotFoundException {
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer( new BufferedImageLuminanceSource(ImageIO .read(new FileInputStream(filePath)))));
Result qrCodeResult = new MultiFormatReader().decode(binaryBitmap, hintMap);
return qrCodeResult.getText();
}
}