The Set interface inherits its methods from Collection (java.util.Collection) and contains only those methods. In addition to sets, there are queues (java.util.Queue) and maps (java.util.Map).

Since the introduction of the Java Collections Framework with JDK 1.2 , I have used Java arrays significantly less frequently than I used to.

The interfaces java.util.List and java.util.Set extend Collection, representing more specialized data structures and adding more operations and/or constraints.

Filtering collections with Guava is fairly straightforward. The following code snippet demonstrates a simple example of this. A Set of String s is provided (not shown in the code snippet, but ...