implement Vehicle.java

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

@@ -20,13 +20,38 @@ public abstract class Vehicle {
         this.mileage = mileage;
     }
 
-    // TODO: Create getters for all fields
 
-    // TODO: Implement addMileage(double km)
+    public String getBrand() {
+        return this.brand;
+    }
+
+    public String getModel() {
+        return this.model;
+    }
+
+    public int getYear() {
+        return this.year;
+    }
+
+    public double getMileage() {
+        return this.mileage;
+    }
+
+
     // If km is negative → print error
     // Otherwise increase mileage
+    public void addMileage(double km) {
+        if(km<0) {
+            System.out.print("km cannot be negative");
+        }
+        else {
+            this.mileage += km;
+        }
+    }
+
+
+    public abstract String getEnergyType();
 
-    // TODO: Declare abstract method getEnergyType()
 
     public void basicInfo() {
         System.out.println(