是自己做的一个数据库课设，得先在电脑上装一个mysql数据库，建几个表，然后用netbeans打开那个工程，可以运行，课设已经过了，有简单的界面，几个基本功能，增删改。-Is doing is a database class, you must first upload a mysql database on the computer, built several tables, and then open the project with netbeans, you can run, has