Decode QR Code using Java

As in earlier post we had learn what is QR code and how can we generate QR code in java and servlet.

Now here I will show you how can we read QR Code in java.

Here again i had use same jar file as we had previous. ZXing- Zibra Corossing

Here is code to read/decode QR Code.

file: QRReader.java

import java.io.FileInputStream;
import javax.imageio.ImageIO;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;

public class QRReader {

public static void main(String args[]){

Result result = null;
BinaryBitmap binaryBitmap;

try{

binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(ImageIO.read(new FileInputStream("D:/Generated_QR.PNG")))));
result = new MultiFormatReader().decode(binaryBitmap);
System.out.println("QR Code : "+result.getText());

}catch(Exception ex){
ex.printStackTrace();
}
}
}

I hope, now you are clear with QR Code generation and decoding using Java.