Adding, deleting, modifying and querying databases with JDBC

Use Java Programming with language , Database connection utilization JDBC technology
requirement （1） User login and registration
Prompt the user to enter the user name and password for account login , You can perform other operations after logging in .
（2） Product information addition
Prompt the user to enter product related information , Add data to the database after user input , If an exception occurs during program operation , Rollback the data .
（3） Commodity information query
Commodity information query includes unconditional query 、 Fuzzy query according to commodity name 、 There are three types of commodity price range query .
（4） Modification of commodity information
Prompt the user to enter the product information to be modified , After user input, modify the data stored in the database to the data entered by the user .
（5） Delete commodity information
Prompt the user to select the product information to delete , Delete the relevant data in the database after the user selects .