currying in java

gistfile1.txt

public void currying() {
    // Create a function that adds 2 integers
    BiFunction<Integer,Integer,Integer> adder = ( a, b ) -> a + b ;

    // And a function that takes an integer and returns a function
    Function<Integer,Function<Integer,Integer>> currier = a -> b -> adder.apply( a, b ) ;

    // Call apply 4 to currier (to get a function back)
    Function<Integer,Integer> curried = currier.apply( 4 ) ;

    // Results
    System.out.printf( "Curry : %d\n", curried.apply( 3 ) ) ; // ( 4 + 3 )
}