Agregando el ejemplo para operaciones

Author: sierisimo

modules/src/main/java/com/platzi/functional/_11_composition/MathOperations2.java

@@ -0,0 +1,30 @@
+package com.platzi.functional._11_composition;
+
+import java.util.function.Function;
+
+public class MathOperations2 {
+    public static void main(String[] args) {
+        Function<Integer, Integer> multiplyBy3 = x -> {
+            System.out.println("Multiplicando x: " + x + " por 3");
+            return x * 3;
+        };
+
+        Function<Integer, Integer> add1MultiplyBy3 =
+                multiplyBy3.compose(y -> {
+                    System.out.println("Le agregare 1 a: " + y);
+                    return y + 1;
+                });
+
+        Function<Integer, Integer> andSquare =
+                add1MultiplyBy3.andThen(x -> {
+                    System.out.println("Estoy elevando " + x + " al cuadrado");
+                    return x * x;
+                });
+
+        System.out.println(
+                add1MultiplyBy3.apply(5)
+        );
+
+        System.out.println(andSquare.apply(3));
+    }
+}