Added qr code generator

Author: trishit78

qr code generator.java

@@ -0,0 +1,46 @@
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
+import com.google.zxing.Writer;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+import com.google.zxing.qrcode.QRCodeWriter;
+import com.google.zxing.client.j2se.MatrixToImageWriter;
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+
+public class QRCodeGenerator {
+    public static void main(String[] args) {
+        // The data to be encoded as a QR code
+        String data = "Hello, this is a QR code example!";
+
+        // Path where the QR code image will be saved
+        String filePath = "qrcode.png";
+
+        // Encoding charset
+        String charset = "UTF-8";
+
+        // Create a QR code writer
+        QRCodeWriter writer = new QRCodeWriter();
+
+        // Set QR code parameters
+        Map<EncodeHintType, ErrorCorrectionLevel> hintMap = new HashMap<>();
+        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
+
+        try {
+            // Generate a QR code
+            BitMatrix bitMatrix = writer.encode(data, BarcodeFormat.QR_CODE, 200, 200, hintMap);
+
+            // Save the QR code as an image
+            MatrixToImageWriter.writeToFile(bitMatrix, "PNG", new File(filePath));
+
+            System.out.println("QR Code generated and saved as " + filePath);
+        } catch (WriterException | IOException e) {
+            e.printStackTrace();
+        }
+    }
+}