Java : Functional interfaces and Lamda expression

I'll show you how you can check a condition and return a boolean value. The java API includes 3 functional interfaces commonly used:
  1. Predicate<T> 
  2. Consumer<T>
  3. Function<T, R>
The Predicate tests the T object and returns a boolean value. The Consumer accepts an operation on T but does not return a value. The Function performs an operation on T and returns an R object.

The static method below uses the Predicate interface to specify the condition:



You can use this method like this:



Thanks

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