How do I optimize SQL queries in my Java application for better performance?

Optimizing SQL queries in Java involves several practices. Firstly, ensure you use indexes effectively to speed up query processing. Avoid using `SELECT *` and instead specify only the needed columns. You can also implement query caching to reuse the results of frequently executed queries.

Make sure to also utilize batch processing for bulk database operations, and use `EXPLAIN` to analyze query performance and identify bottlenecks. Additionally, consider using connection pooling to manage database connections efficiently. Last but not least, regularly review and refactor your queries as the data grows and evolves.