Utilities - datatypes

java.util (Java Platform SE 8 )
JavaScript is disabled on your browser. Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array). For overviews, tutorials, examples, guides, and tool documentation, please see: Submit a bug or feature For further API reference and developer documentation, see Java SE Documentation.
https://docs.oracle.com/javase/8/docs/api/java/util/package-summary.html