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What is the most useful multi-purpose open-source library for java? [closed]

Are there any open-source libraries that all programmers should know about? I'm thinking something general, a sort of extension to the standard java.util that contains basic functions that are useful for all kinds of application.

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Marlo Guthrie Avatar asked Sep 15 '08 16:09

Marlo Guthrie


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2 Answers

  • Apache Commons

  • Log4j

  • Google collections

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Chris Broadfoot Avatar answered Oct 21 '22 11:10

Chris Broadfoot


The Spring framework is surprisingly general purpose. I started by just using it as a configuration management tool, but then realized how helpful dependency injection is when doing test-driven development. Then I slowly discovered many useful modules hidden in the corners of Spring.

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Don Kirkby Avatar answered Oct 21 '22 12:10

Don Kirkby