Java JDBC: Why Am I Getting an \'Access Denied\' Error When Connecting to MySQL?

Java JDBC: Access Denied Error

When attempting to establish a database connection from a Java application to MySQL, you may encounter an "Access denied" error. This issue can occur for various reasons.

One common cause is a mismatch between the user credentials used in the Java program and those stored in the database. Verify that the 'vincent' user exists in MySQL and that the correct password is being used.

Another potential issue is improper user permissions. Ensure that the 'vincent' user has the appropriate privileges to access the database. From within MySQL, execute the following command to grant all privileges to the user from any host:

grant all on db_name.* to 'vincent'@'%';

Replace 'db_name' with the name of your MySQL database.

Furthermore, check that the JDBC URL used in your Java program specifies the correct hostname. If the hostname is incorrect, the connection will fail with an access denied error.

Once the user credentials, permissions, and hostname are verified, you should be able to successfully connect to MySQL from your Java application.

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