use streams for getAllElectricCars

amigoscode · amigoscode · commit 3dea1d0d2283 · 2022-09-25T18:17:47.000+01:00
diff --git a/src/com/amigoscode/car/CarService.java b/src/com/amigoscode/car/CarService.java
@@ -3,6 +3,7 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class CarService {
 
@@ -26,22 +27,10 @@ public Car getCar(String regNumber) {
     }
 
     public List<Car> getAllElectricCars() {
-        List<Car> cars = getAllCars();
-
-        if (cars.size() == 0) {
-            return Collections.emptyList();
-        }
-
-        List<Car> electricCars = new ArrayList<>();
-
-        for (Car car : cars) {
-            if (car.isElectric()) {
-                electricCars.add(car);
-            }
-        }
-
-
-
+        List<Car> electricCars = getAllCars()
+                .stream()
+                .filter(car -> car.isElectric())
+                .collect(Collectors.toList());
         return electricCars;
     }
 }
