Traffic police implements CanFixAcc

SetVehicleSize is private

src/TrafficPoliceCar.java

@@ -1,4 +1,4 @@
-public class TrafficPoliceCar extends Vehicle implements CanBeGovtCar {
+public class TrafficPoliceCar extends Vehicle implements CanBeGovtCar, CanFixAccident {
 
     private final double ADDED_EFFICIENCY = 0.05; // 5%
     private int govtID;

src/Vehicle.java

@@ -9,7 +9,7 @@ public abstract class Vehicle {
         return vehicleSize;
     }
 
-    public void setVehicleSize(double vehicleSize) {
+    private void setVehicleSize(double vehicleSize) {
         if (vehicleSize <= 0) throw new IllegalArgumentException("Vehicle can not be negative in length!");
         else this.vehicleSize = vehicleSize;
     }