BinaryOperator Functional Interfaces

FunctionalInterfaces.java

// BinaryOperator

        System.out.println("binaryOpeartor = " + Stream.of(1,2,3,4).reduce(new BinaryOperator<Integer>() {
            @Override
            public Integer apply(Integer x, Integer y) {
                return x + y;
            }
        }).get());

        System.out.println("binaryOpeartor = " + Stream.of(1,2,3,4).reduce((x, y) -> x + y).get());

        System.out.println("binaryOpeartor = " + Stream.of(1,2,3,4).reduce(Integer::sum).get());