String to QR Code Image Generator Using Java

 Hi ,

Hope You are doing well.

I came up with the requirement, where I need to generate QR code Image file for the input String.

package demo;

import com.google.zxing.BarcodeFormat;

import com.google.zxing.BinaryBitmap;

import com.google.zxing.ChecksumException;

import com.google.zxing.DecodeHintType;

import com.google.zxing.FormatException;

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.client.j2se.MatrixToImageWriter;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.common.HybridBinarizer;

import com.google.zxing.qrcode.QRCodeReader;

import com.google.zxing.qrcode.QRCodeWriter;

import java.awt.image.BufferedImage;

import java.io.ByteArrayInputStream;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.nio.file.FileSystems;

import java.nio.file.Path;

import java.util.Base64;

import java.util.HashMap;

import java.util.Map;

import javax.imageio.ImageIO;

public class QRCodeGenerator {

    private static final String QR_CODE_IMAGE_PATH = "C:\\Users\\sah75706.DS\\Desktop\\POC\\GeneratedFiles\\MyQRCoderr.png";

    private static void generateQRCodeImage(String text, int width, int height, String filePath) throws WriterException,

                                                                                                        IOException {

        QRCodeWriter qrCodeWriter = new QRCodeWriter();

        BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);

        Path path = FileSystems.getDefault().getPath(filePath);

        MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);

    }

    public static void main(String[] args) throws NotFoundException {

        try {

            generateQRCodeImage("This is my first QR Code", 350, 350, QR_CODE_IMAGE_PATH);

            System.out.println("QRCode Generated");

        } catch (WriterException e) {

            System.out.println("Could not generate QR Code, WriterException :: " + e.getMessage());

        } catch (IOException e) {

            System.out.println("Could not generate QR Code, IOException :: " + e.getMessage());

        }

    }

}

Cheers!!