Community driven content discussing all aspects of software development from DevOps to design patterns. As developers migrate their old Java Persistence API applications to JPA 3, their progress is ...

This repository explores Java JDBC, covering core concepts like database connection, CRUD operations, prepared statements, dynamic queries, and batch processing — all using MySQL for real-world ...

This repository contains basic Java concepts with reference to "Head First Java" and weekly lab questions.It covers collections and javafx basics too!

The first thing you'll learn in this PostgreSQL and Java Database Connectivity (JDBC) tutorial is that most developers simply call it Postgres. The two terms are both interchangeable and official. Use ...

假如直接lo_conn.close();，提示未对异常作处理。 写在prestatement的try里就可以。 这里有一些不理解，为什么我开了一个连接后，不能直接关闭？ 另外顺便问下，在关闭数据库连接的时候，应该注意些什么？什么时候应该注意要关闭？