Further exercises

Author: Elsa Hill

2.1-exercise/src/LambdaFun.java

@@ -0,0 +1,21 @@
+package lambdasinaction.lambda;
+
+import lambdasinaction.appd.Lambda;
+import lambdasinaction.chap3.Lambdas;
+import lambdasinaction.chap3.Lambdas.*;
+
+import java.util.Comparator;
+
+public class LambdaFun {
+// To try: https://javabrains.io/courses/java_lambdabasics/lessons/Lambda-Exercise/
+    public static void main(String[] args) {
+
+        // Must return an object with a Functional Interface 
+        Runnable o = () -> System.out.println("Trixy");
+
+        // Can use type inference or be explicit and provide the object type in the parameter.
+        Comparator<Lambdas.Apple> c = (Apple a1, Apple a2) -> a1.getWeight().compareTo(a2.getWeight());
+        Comparator<Lambdas.Apple> c2 = (a1, a2) -> a1.getWeight().compareTo(a2.getWeight());
+    }
+}
+

2.1-exercise/src/PrettyApple.java

@@ -12,7 +12,6 @@ a String output from an apple (a bit like multiple customized
 
 public class PrettyApple implements ApplePredicate{
 
-
     public static void prettyPrintApple(List<Apple> inventory, ApplePredicate applePredicate) {
         List<Apple> greenHeavyAppleList = new ArrayList<>();
         for (Apple apple : inventory) {