Workshop 3 (oop) is implemented

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

@@ -27,13 +27,41 @@ public class GasCar extends Car implements Refuelable {
         this.fuelType = fuelType;
     }
 
-    // TODO: Override getEnergyType() → return fuelType + " (Gas)"
+    @Override
+    public String getEnergyType() {
+        return fuelType + " (Gas)";
+    }
 
-    // TODO: Implement refuel(double amount)
-    // Validate amount
-    // Cap at 100
+    @Override
+    public void refuel(double amount) {
 
-    // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print fuel level and fuel type
+        if (amount < 0) {
+            System.out.println("Invalid fuel amount");
+            return;
+        }
+
+        fuelLevel += amount;
+
+        if (fuelLevel > 100) {
+            fuelLevel = 100;
+        }
+    }
+
+    @Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println("Fuel Level: " + fuelLevel);
+        System.out.println("Fuel Type: " + fuelType);
+    }
+
+    @Override
+    public boolean needsService(Vehicle v) {
+        return v.getMileage() > 12000;
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("Engine oil changed");
+        fuelLevel = 100;
+    }
 }