The Function Functional interface takes a single input and returns any value. The function interface is located in java.util.function package. It has a Single Abstract Method (SAM) apply(), which accepts the generic object type T and returns object type R. … [Read more...]
Java Functional Interface – @FunctionalInterface Annotation
The Functional Interface is introduced in Java 8, and it is nothing but an interface with a Single Abstract Method (SAM). A functional interface can act as a target for a lambda expression or a method reference. … [Read more...]