java function to write into sql database from java

public static void runsql(String Q)
  {
    try
    {
      // create a mysql database connection
   
      String myUrl = "jdbc:mysql://localhost:3306/firewall?zeroDateTimeBehavior=convertToNull";
      Class.forName("com.mysql.jdbc.Driver");
      Connection conn = DriverManager.getConnection(myUrl,"root", "password");
      if (conn != null) {
    System.out.println("Connected");
}
      Statement st = conn.createStatement();

     
      st.executeUpdate(Q);

      conn.close();
    }
    catch (Exception e)
    {
      System.err.println("Got an exception!");
      System.err.println(e.getMessage());
    }

  }