BiFunction Interface example

Interface BiFunction<T,U,R>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

Type Parameters:

T - the type of the first argument to the function

U - the type of the second argument to the function

R - the type of the result of the function

BiFunction Method:

1. //Returns a composed function that first applies this function to its input, and then applies the after function to the result.
2. default <V> BiFunction<T,U,V> andThen(Function<? super R,? extends V> after)
3. //Applies this function to the given arguments.
4. R apply(T t, U u)

BiFunction Example:

1. import java.util.function.BiFunction;
2. import java.util.function.Function;
3. 
   
4. public class TestDemo {
5.  public static void main(String[] args) {
6.       BiFunction<String, String,String> biFunction = (x, y) -> {
7.          return x+"==="+y;
8.       };
9. 
   
10.       Function<String,String> fun = x ->x + " after8";
11.       System.out.println(biFunction.andThen(fun).apply("tpyyes.com ", " java8"));
12.  }
13. }

output:

1. tpyyes.com === java8 after8