Security-related question about a possible exposed credential

[Emma-NYL]

Hello,

My name is Emma, I am conducting an academic study on possible credential exposure in public GitHub repositories.

While analyzing this repository, I found a string that may represent a credential. I'm including the code snippet below containing possible leakage. To avoid exposing sensitive information publicly, I marked the sensitive information.

Could you please help clarify whether the detected string is:

1. a real credential, or
2. a placeholder / example value?

Thank you for your time.

---

Code snippet (sensitive values masked):

import java.sql.*;
import java.util.Scanner;

final class mysql {
    
    final static String user = "us****me";
    final static String pa****rd = "pa****rd";
    final static String db = "data****Name";
    final static String jdbc = "conn****onURL" + db + "?user=" + user + "&pa****rd=" + pa****rd;

    public static void main(String[] args) throws Exception {
        
        Class.forName("com.mysql.jdbc.Driver").newInstance();

Thank you in advance for your time - I really appreciate it!

Sincerely,
Emma