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In java, what is the purpose of com. In package names (lemmy.world)

submitted 1 year ago by HelloHotel@lemmy.world to c/technology@lemmy.world

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Why are packages labled com.person.mypackage rather than just person.mypackage

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[–] fubo@lemmy.world 41 points 1 year ago (1 children)

They used DNS domains as a namespace to keep one company's work from colliding with another.

https://en.wikipedia.org/wiki/Reverse_domain_name_notation

[–] Zephyrix@artemis.camp 20 points 1 year ago

To expand on this, it’s the naming convention that Java defines.

Package names are written in all lower case to avoid conflict with the names of classes or interfaces.
Companies use their reversed Internet domain name to begin their package names—for example, com.example.mypackage for a package named mypackage created by a programmer at example.com.

https://docs.oracle.com/javase/tutorial/java/package/namingpkgs.html