feature/rent

src/car/Car.java

@@ -5,7 +5,9 @@ public class Car {
     private int id;
 
     private int cost;
-
+    private int monthlyCost;
+    private boolean taken;
+    private int rentDuration;
     private boolean sold;
 
     public Car(int id, int cost) {
@@ -14,6 +16,23 @@ public class Car {
         this.sold = false;
     }
 
+    public void rent(int dur){
+        this.taken = true;
+        this.rentDuration = dur;
+    }
+
+    public int rentCost() {
+        return this.monthlyCost;
+    }
+
+    public int duration(){
+        return this.rentDuration;
+    }
+
+    public boolean isRented(){
+        return this.taken;
+    }
+
     public void sell() {
         this.sold = true;
     }
@@ -33,6 +52,6 @@ public class Car {
     public boolean isAvailable() {
         // check if a car is available (not sold or not rented)
 
-        return !isSold();
+        return !isSold() && !isRented();
     }
 }