QRCodeGenerator.java

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.client.j2se.MatrixToImageWriter;

import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Path;

public class QRCodeGenerator {
    public static void generateQRCode(String text, String filePath) throws WriterException, IOException {
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, 300, 300);

        Path path = FileSystems.getDefault().getPath(filePath);
        MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
    }

    public static void main(String[] args) {
        try {
            String tableLink = "http://localhost:8080/table/1";
            generateQRCode(tableLink, "assets/qrcodes/table1.png");
            System.out.println("QR Code generated for Table 1");
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}