Added QR Generator

Author: Pranika-Kalimuthu

qrgenerator.java

@@ -0,0 +1,40 @@
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.qrcode.QRCodeWriter;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.Map;
+
+public class QRCodeGenerator {
+    public static void main(String[] args) {
+        String text = "Hello, QR Code!"; // Text to encode in QR code
+        String filePath = "QRCode.png"; // Output file path
+        int width = 300; // QR code image width
+        int height = 300; // QR code image height
+
+        // Create a map for encoding hints
+        Map<EncodeHintType, ErrorCorrectionLevel> hints = new HashMap<>();
+        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
+
+        try {
+            // Generate the QR code matrix
+            QRCodeWriter qrCodeWriter = new QRCodeWriter();
+            BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height, hints);
+
+            // Save the QR code image
+            Path path = FileSystems.getDefault().getPath(filePath);
+            MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
+
+            System.out.println("QR Code generated successfully: " + filePath);
+        } catch (Exception e) {
+            System.out.println("Error while generating QR Code: " + e.getMessage());
+        }
+    }
+}