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 ...

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 ...

WattWise is a revolutionizing energy management through a Java-based system, empowering users to monitor appliance-level consumption, set cost targets, and promote conscious energy usage.

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？

I've googled around, and I can't find any info on why java.net.URLConnection is abysmally slow. I have observed the problem on os x (with java 1.4.2), linux, and pocket pc (running ibm's j9). It ...

This is a weird one for me. I'm trying to access a simple mySQL database using JDBC. I have the mySQL connector installed and it seems to be ok. But when I try to ...