Every Java program tends to have one thing in common: they’ll all use Java collections! They’re so fundamental, we could not even think about omitting them from our cheat sheet collection. This is a tough challenge, since there’s so much you need to know about the collections framework, the implementation details, correct use cases, how to choose the right collection type, what they can do, and when to turn to the third-party libraries as opposed to using the built-in collections in the JDK.

About Our Java Collections Cheat Sheet

No topic as broad as Java collections framework can be fully explained in a single A4 page, but we’ve tried to incorporate the most essential information you will need to reference again and again. It includes:

  • Information on popular Java collections libraries
  • Collection classes and thread-safe alternatives
  • Order of iteration and random access information by class

Download the Cheat Sheet

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