diff --git a/src/com/google/zxing/client/j2se/GUIRunner.java b/src/com/google/zxing/client/j2se/GUIRunner.java
index 636e4a7..2c1ad99 100644
--- a/src/com/google/zxing/client/j2se/GUIRunner.java
+++ b/src/com/google/zxing/client/j2se/GUIRunner.java
@@ -37,6 +37,8 @@ import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 import java.net.MalformedURLException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 
 import javax.imageio.ImageIO;
 import javax.swing.Icon;
@@ -160,7 +162,12 @@ public final class GUIRunner extends JFrame implements ActionListener {
 				BitMatrix bitMatrix;
 				String str=textArea2.getText();
 				String user_dir=System.getProperty("user.dir");
-				String path=user_dir+"\\qr.png";
+				//long timestamp=System.currentTimeMillis();
+				SimpleDateFormat  sfd=new SimpleDateFormat ("yyyy-MM-dd-hh-mm-ss");
+				String timestamp=sfd.format(new Date());
+
+				
+				String path=user_dir+"\\qr-"+timestamp+ ".png";
 				try {
 					bitMatrix = new MultiFormatWriter().encode
 					(str, BarcodeFormat.QR_CODE, 200, 200);//ͼƬ´óС