java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: NO)

Question

I\'m having troubles with my project , it involves JDBC and Mysql connection .

When I do the following :

private Statement m_         


        

Answer 1

Either the username/password is wrong or the user is missing privileges to access the schema/table. Grant privileges using

GRANT ALL PRIVILEGES ON . TO 'root'@'localhost' WITH GRANT OPTION

Answer 2

TO check if mysql has a password, go to the directory where you installed mysql, and in the bin directory try to bring up mysql prompt using

./mysql –u root mysql

If the login goes through without any problem, it means no password is set.
You can use mysqadmin script to set/reset password.

./mysqladmin –u root password "password string"

Answer 3

I encounter the same error, this is how I fixed it:

I used DriverManager class like this:

    Class.forName("com.mysql.jdbc.Driver");
    Connection Hello = DriverManager.getConnection("jdbc:mysql://YOUR-URL-HERE", "USERNAME", "PASSWORD");

And that's it. Also, when selecting a table, remenber to put the DB name first, like:

    "DB_NAME.TABLE_NAME".

Answer 4

Looks like you've only just installed mysql. Run mysql_secure_installation. It will prompt you for a root password, among other things.

Answer 5

I had the same problem. You need to set a password for the user. Go to the mysql console .

$ mysqladmin -u root password myFirstpassword

Then change your password in the java program