Lambda Function Composition #function #lambda #composition #apply

lambda-function-composition.java

        /**
         * This translates to g(f(x))
         */
        Function<Integer, Integer> f = x -> x + 1;
        Function<Integer, Integer> g = x -> x * 2;
        Function<Integer, Integer> h = f.andThen(g);

        int res2 = h.apply(1);

        System.out.println(res2);
        
        
        /**
         * This translates to f(g(x))
         */
        Function<Integer, Integer> f = x -> x + 1;
        Function<Integer, Integer> g = x -> x * 2;
        Function<Integer, Integer> h = f.compose(g);

        int res2 = h.apply(1);

        System.out.println(res2);