completing all classes

src/main/java/org/model/ElectricCar.java

@@ -29,11 +29,50 @@ public class ElectricCar extends Car implements Chargeable {
 
     // TODO: Override getEnergyType() → return "Electric"
 
+    @Override
+    public String getEnergyType() {
+        return "Electric";
+    }
+
+
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print battery capacity and charge level
 
+    @Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println("battery capacity: " + batteryCapacity);
+        System.out.println("charge level: " + chargeLevel);
+    }
+
+
     // TODO: Implement charge(double amount)
     // Validate negative
     // Cap at 100
+    public void charge(double amount) {
+        if (amount <= 0) {
+            System.out.println("error");
+        }
+        else if ((chargeLevel + amount) <= 100 ) {
+            chargeLevel += amount;
+        }
+        else {
+            chargeLevel = amount;
+        }
+    }
+
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage() > 8000) {
+            return true;
+        }
+        else { return false; }
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("Battery system checked.");
+    }
+
 }