Java project and Java Project

Java project and Java Project
1. Package naming

Example: com. sun. spring. xxx. service. impl

Level 1: reverse com. sun of the Company domain name

Level 2: Project name spring

Level 3: module information xxx

Level 4: top-level feature Package service/dao/vo/po

Level 5: Implementation Layer impl

Ii. model naming

1. po: Persistance Object, persistence Object, corresponding to the corresponding table in the database, generally with the id attribute

2. vo: View Object, value Object, which is generally used to pass values between classes and pages.

3. dto: Data Transfer Object, a Data transmission Object, which is generally used to pass values between classes.