Java — Generate QR Code using zxing | Code Factory

<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.4.0</version>
</dependency>
package com.example.java.programming;import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
/**
* @author code.factory
*
*/
public class QRCodeGenerator {

private static final String IMAGE_PATH = "QR.png";
private static final String IMAGE_FORMAT = "PNG";

public static void main(String... args) {
try {
generateQR("Code Factory", 400, 400, IMAGE_PATH);
} catch(Exception e) {
e.printStackTrace();
}
}

private static void generateQR(String msg, int width, int height, String imagePath) throws WriterException, IOException {
QRCodeWriter writer = new QRCodeWriter();
BitMatrix matrix = writer.encode(msg, BarcodeFormat.QR_CODE, width, height);
Path path = FileSystems.getDefault().getPath(imagePath);
MatrixToImageWriter.writeToPath(matrix, IMAGE_FORMAT, path);

/*If you want to return byte array of QR code then use below code*/
/*ByteArrayOutputStream pngOutputStream = new ByteArrayOutputStream();
MatrixToImageWriter.writeToStream(matrix, IMAGE_FORMAT, pngOutputStream);
byte[] data = pngOutputStream.toByteArray();
return data;*/
}
}

--

--

--

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

Python code protection:Virbox Protector

Should I learn PHP in 2021 or in 2022?

Image of PHP

Linux Basics

Reliability Design Of Kafka

InterviewCake’s HiCal Question with walkthrough

Why Occlusion Culling Improves Performance

Highly Available and Scalable Elasticsearch on Kubernetes

[ShortBuild and Deploy

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Code Factory

Code Factory

More from Medium

Design Pattern — 5

Prototype Design Pattern

Criteria API (Introduction)

SOLID Principles (Journey for writing readable and maintainable code)