Exercises completed

TicketMachine.java

@@ -28,8 +28,15 @@ public class TicketMachine
         price = ticketCost;
         balance = 0;
         total = 0;
+        prompt();
+    }
+    public TicketMachine()
+    {
+        price = 1000;
+        balance = 0;
+        total = 0;
+        prompt();
     }
-
     /**
      * Return the price of a ticket.
      */
@@ -52,6 +59,20 @@ public class TicketMachine
      */
     public void insertMoney(int amount)
     {
+        if (amount > 0) 
+        {
+         balance = balance + amount;
+        }
+        else 
+        System.out.println("Use a positive amount: " +amount);
+        
+        if (balance >= price) 
+        {
+        total = total + price;
+        balance = balance - price;
+        }
+        else
+        System.out.println("You must insert at least " + (price-balance)+ " more cents.");
         balance = balance + amount;
     }
 
@@ -62,6 +83,10 @@ public class TicketMachine
      */
     public void printTicket()
     {
+        int amountLeftToPay = price - balance;
+        if (amountLeftToPay <=0) 
+        {
+        
         // Simulate the printing of a ticket.
         System.out.println("##################");
         System.out.println("# The BlueJ Line");
@@ -69,10 +94,40 @@ public class TicketMachine
         System.out.println("# " + price + " cents.");
         System.out.println("##################");
         System.out.println();
+        }
+        else
+        System.out.println("An additional " +amountLeftToPay+ " cents is required.");
 
         // Update the total collected with the balance.
         total = total + balance;
         // Clear the balance.
-        balance = 0;
+       balance = 0;
+    }
+
+    public int getTotal()
+    {
+        return total;
+    }
+    public void prompt()
+    {
+        System.out.println("Please insert the correct amount of money.");
+    }
+    public void showPrice()
+    {
+     System.out.println("The price of a ticket is " + price + "cents.");   
+    }
+    public void empty()
+    {
+    total = 0;    
+    }
+    public void setPrice(int newPrice)
+    {
+    price = newPrice;   
+    }
+    public int emptyMachine()
+    {
+    System.out.println("The total is " + total);
+    total = 0;
+    return total;
     }
 }