Introduction to Programming

Matching all, any, or none

There are three (seemingly very similar) Terminal operations that allow us to asses whether all, any, or none of the stream elements have a certain value:

• boolean allMatch(Predicate<T> predicate): Returns true when each of this stream elements returns true, when used as a parameter of the provided Predicate<T> function
• boolean anyMatch(Predicate<T> predicate): Returns true when one of this stream elements returns true, when used as a parameter of the provided Predicate<T> function
• boolean noneMatch(Predicate<T> predicate): Returns true when none of the stream elements return true, when used as a parameter of the provided Predicate<T> function.

The following are examples of their usage:

List<String> list = List. ...