How to Fix 'com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException' When Connecting to MySQL?

JDBC Connection Failure: How to Resolve "com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException"

When establishing a connection to a MySQL database using Java, it's possible to encounter the following exception: "com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server." This error can arise due to various reasons.

One potential cause is the compatibility between the MySQL Connector/J version and the MySQL Server version. In this particular case, using MySQL Connector/J 5.1.31 with MySQL Server 8.0 can lead to this issue. To resolve it, the solution involves upgrading the connector version to either MySQL Connector/J 5.1.46 or, preferably, 8.0.11 (or later).

By updating the MySQL Connector/J to a more recent version, it ensures compatibility with the current MySQL Server installation and provides the necessary features and enhancements required for successful database connectivity. This simple yet crucial update can save you time and hassle in resolving connectivity issues.

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