Jdbc connection mssql empty URL

Hello i've got this code:

Code :

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DatabaseManager.init("com.inet.tds.TdsDriver", "jdbc:inetdae:127.0.0.1?database=main", "username", "password", 10);

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which links to:

Code :

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public static void init(String JDBCDriver, String parURL, String parUserName, String parPassWord, int maxConnections) throws ClassNotFoundException, SQLException {
 
    Class.forName(JDBCDriver);
    URL = parURL;
    userName = parUserName;
    passWord = parPassWord;
    openConnection();
}

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But gives me this fault:

Code :

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DatabaseManager.getConnection() : java.sql.SQLException: The url cannot be null

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By this script:

Code :

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public static void openConnection() throws SQLException{
 
    connection = DriverManager.getConnection(URL, userName, passWord);
}
 
public static Connection getConnection() {
 
    try {
        if (connection!=null) {
            if (connection.isClosed())
                openConnection();
        } 
        else {
            openConnection();
        }
    } catch (SQLException e) {
            System.out.println("deze fout: DatabaseManager.getConnection() : " + e);    
        return null;
    }
    return connection;

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Does anyone have a clue why it tells me the url is empty?

Please let me know if you need to see more scripting