Complete project with HybridCar bonus

src/main/java/org/model/GasCar.java

@@ -1,15 +1,5 @@
 package org.model;
 
-/*
- * GasCar extends Car.
- * Inherits Serviceable from Car.
- *
- * Service logic for GasCar:
- * - needsService(): return true if mileage > 12000
- * - performService():
- *     Print "Engine oil changed"
- *     Reset fuelLevel to 100
- */
 
 import org.behavior.Refuelable;
 
@@ -27,13 +17,45 @@ public class GasCar extends Car implements Refuelable {
         this.fuelType = fuelType;
     }
 
-    // TODO: Override getEnergyType() → return fuelType + " (Gas)"
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 12000){
+            return true;
+        }else{
+            return false;
+        }
+    }
 
-    // TODO: Implement refuel(double amount)
-    // Validate amount
-    // Cap at 100
+    @Override
+    public void performService() {
+        System.out.println("Engine oil changed");
+        fuelLevel = 100;
+    }
 
-    // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print fuel level and fuel type
+    @Override
+    public String getEnergyType() {
+        return fuelType + " (Gas)";
+    }
+
+    @Override
+    public void refuel(double amount) {
+        if (amount <= 0){
+            System.out.println("Invalid amount! Must be positive.");
+            return;
+        }
+        if (fuelLevel + amount > 100) {
+            fuelLevel = 100;
+            System.out.println("Tank is full! Fuel level is now 100.0");
+        } else {
+            fuelLevel += amount;
+            System.out.println("Added " + amount + " units. Fuel level is now " + fuelLevel);
+        }
+
+    }
+
+    @Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println(" | fuel Level: "+fuelLevel+" | fuel Type: "+fuelType);
+    }
 }