user id addded in this code

src/main/java/com/billpaymentservice/bbps/util/Helper.java

@@ -3,7 +3,7 @@ package com.billpaymentservice.bbps.util;
 import java.security.SecureRandom;
 import java.time.LocalDateTime;
 import java.util.Date;
-import java.util.UUID;
+import java.util.Random;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -210,15 +210,20 @@ public class Helper {
 	}
 
 	private String generateUniqueUserId() {
-		String userId = UUID.randomUUID().toString(); // Generate UUID
+		Random random = new Random();
+
+		// Generate a random 6-digit number (between 100000 and 999999)
+		String userId = String.format("USER%06d", random.nextInt(900000) + 100000); // Format as USER-XXXXXX
 
 		// Check if the userId already exists in the database (theoretically rare but
 		// can happen)
 		while (userRepository.existsByUserId(userId)) {
 			// If it exists, generate a new one
-			userId = UUID.randomUUID().toString();
+			userId = String.format("USER-%06d", random.nextInt(900000) + 100000); // Generate new 6-digit number with
+																					// prefix
 		}
 
 		return userId;
 	}
+
 }