mysql - How to verify whether localhost username and password is correct or not using java? -

i've been looking verification of localhost(in case xampp) username , password i.e 'root' , '' (null). suppose user changed localhost username , password how can verify using java + sql query.

    //database credentials     public static  connection conn = null;     public static  statement stmt = null;        public static  string jdbc_driver = "com.mysql.jdbc.driver";       public static  string db_url = "jdbc:mysql://localhost/";      class.forname("com.mysql.jdbc.driver");     conn = drivermanager.getconnection(db_url);     system.out.println("driver loaded");         conn = drivermanager.getconnection( db_url , lh_username , lh_password);     stmt = conn.createstatement(); 

is there way can boolean result while executing 1 of above

you can surround

conn = drivermanager.getconnection( db_url , lh_username , lh_password);

whit try catch block in way:

try { conn = drivermanager.getconnection( db_url , lh_username , lh_password); } catch(sqlexception e){ if(e.getmessage().startswith("access denied user")){ system.out.println("error: nont valid user or password"); //you can add return false if want return false; } }