Why do most java classes end with “ers”? [closed]

https://softwareengineering.stackexchange.com/questions/196063

design
object-oriented-design
naming-standards

06-11-2019
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Question

...Provider
...Searcher
...Resolver
...Builder
...Manager
...Importer
...Descriptor
...Helper
...Indexer

Is it a global convention to refer a thing with "..ers" or "..ors". In contrast, a "thing" that composes with behaviors (habits) or attributes (properties) doesn't go with such naming convention.

It is fun to think that we named the classes based on their behaviors. The "Manager" classes are always resembles my Project Manager.

No correct solution

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