implement todos in vehicle.java

src/main/java/org/model/Vehicle.java

@@ -20,14 +20,37 @@ public abstract class Vehicle {
         this.mileage = mileage;
     }
 
+    public String getBrand() {
+        return brand;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public int getYear() {
+        return year;
+    }
+
+    public double getMileage() {
+        return mileage;
+    }
+
     // TODO: Create getters for all fields
 
+    public void addMileage(double km) {
+        if (km < 0) {
+            System.out.println("error");
+            return;
+        }
+        this.mileage += km;
+    }
     // TODO: Implement addMileage(double km)
     // If km is negative → print error
     // Otherwise increase mileage
 
+    public abstract String getEnergyType();
     // TODO: Declare abstract method getEnergyType()
-
     public void basicInfo() {
         System.out.println(
                 year + " " + brand + " " + model +