Changes after article review

core-java/versions/src/main/java/com/reflectoring/io/java8/LambdaExpressions.java

@@ -15,9 +15,6 @@ public class LambdaExpressions {
         List<Car> oldWayModel = findCarsWithModelOldWay(cars);
         System.out.println(oldWayModel);
 
-        List<Car> criteriaLambda = findCarsUsingLambdaCriteria(cars, (Car car) -> car.kilometers < 500000 && car.model.equals("Mercedes"));
-        System.out.println(criteriaLambda);
-
         List<Car> filterLambda = findCarsUsingLambda(cars);
         System.out.println(filterLambda);
 
@@ -47,22 +44,9 @@ public class LambdaExpressions {
         return selectedCars;
     }
 
-    public static List<Car> findCarsUsingLambdaCriteria(List<Car> cars, Criteria<Car> criteria){
-        List<Car> selectedCars = new ArrayList<>();
-        for(Car car: cars){
-            if(criteria.evaluate(car)){
-                selectedCars.add(car);
-            }
-        }
-        return selectedCars;
-    }
-
     public class Car{
         public String model;
         public double kilometers;
     }
 
-    public interface Criteria<T>{
-        boolean evaluate(T t);
-    }
 }

core-java/versions/src/main/java/com/reflectoring/io/java9/DiamondOperator.java

@@ -2,18 +2,15 @@ package com.reflectoring.io.java9;
 
 public class DiamondOperator {
     public static void main(String[] args) {
-        AppendingString<String> appending = new AppendingString<>() {
+        StringAppender<String> appending = new StringAppender<String>() {
             @Override
             public String append(String a, String b) {
                 return new StringBuilder(a).append("-").append(b).toString();
             }
         };
-
-        String result = appending.append("Reflectoring", "Blog");
-        System.out.println(result);
     }
 
-    public abstract static class AppendingString<T>{
+    public abstract static class StringAppender<T>{
         public abstract T append(String a, String b);
     }
 }