Question 1

How do I connect to MySQL from Java using Connector/J?

Accepted Answer

Add the MySQL Connector/J dependency via Maven or include the JAR in your classpath, then use a JDBC URL like jdbc:mysql://hostname:port/database with the appropriate driver class. The README provides Maven configuration examples for quick setup.

Question 2

What's the difference between MySQL Connector/J and HikariCP?

Accepted Answer

MySQL Connector/J is the JDBC driver that enables database connectivity, while HikariCP is a connection pool library for managing database connections efficiently. They are often used together in production applications for optimal performance.

Question 3

How can I use the X DevAPI for NoSQL operations with MySQL?

Accepted Answer

Ensure the Protocol Buffers dependency is included, then utilize the MySQL X DevAPI classes provided by Connector/J to perform CRUD operations on document collections. The README notes that protobuf-java is required for this feature.

Question 4

Is MySQL Connector/J compatible with Java 11 or higher?

Accepted Answer

Yes, MySQL Connector/J 9.6 is compatible with Java 8 and later versions, including Java 11, as it implements JDBC 4.2 which aligns with modern Java SE releases.

Question 5

How to exclude X DevAPI dependencies in Maven to reduce jar size?

Accepted Answer

In your Maven POM, add an exclusion for protobuf-java under the MySQL Connector/J dependency, as shown in the README. This prevents linking unused libraries and minimizes the application footprint.

Question 6

MySQL Connector/J or MariaDB Connector/J: which is better for MySQL?

Accepted Answer

For MySQL databases, MySQL Connector/J is the official driver with full support for MySQL-specific features like X DevAPI. MariaDB Connector/J is optimized for MariaDB and may lack some MySQL integrations, so Connector/J is recommended for guaranteed compatibility.

MySQL Connector/J

What is MySQL Connector/J?

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