Question

I’m a beginner in programming web apps with Java EE. How do you name your packages?

I often saw stuff like com.abc.commons… is there a standard or a common way to do that?

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Thanks to seanizer, I gonna use your approach: com.mycompany.myproject.api

Answer 1

These parts usually enter into my package names

1. Domain name (your’s or your company’s / customer’s) backwards
2. Project name
3. Artifact name (api, client, test etc.)
4. Functionality

example:

com.mycompany.myproject.api.services
// contains service interfaces for project myproject

com.mycompany.myproject.common.util.string 
// contains string-related utility classes that reside in a library module
// that will be used by several other artifacts

One good practice is to have a common root package that is distinct for an individual project (jar etc). For example: in the jar myproject-api.jar , the root package would be com.mycompany.myproject.api. That way you always know where to find your classes.