completed lab

TicketMachine.java

@@ -9,7 +9,7 @@
  * @author David J. Barnes and Michael Kolling
  * @version 2008.03.30
  */
-public class TicketMachine
+class TicketMachine
 {
     // The price of a ticket from this machine.
     private int price;
@@ -17,6 +17,10 @@ public class TicketMachine
     private int balance;
     // The total amount of money collected by this machine.
     private int total;
+    //Exercise 2.15ls
+
+    private int status;
+    private int score;
 
     /**
      * Create a machine that issues tickets of the given price.
@@ -30,6 +34,33 @@ public class TicketMachine
         total = 0;
     }
 
+    public TicketMachine()
+    {
+        price = 10000;
+        balance = 0;
+        total = 0;
+    }
+
+    public void setPrice(/*int ticketCost*/){
+        price = 1000;//all tickets will begin with the state of 1000.
+    }
+
+    /**
+     * Remove all money from machine.
+     */
+    public void empty(/* none needed. */)//mutates the state of total.
+    {
+        total = 0;
+    }
+
+    /**
+     * Set the new price of a ticket.
+     */
+    public void setPrice2(int price2)//mutates the state of price.
+    {
+        price = price2;
+    }
+
     /**
      * Return the price of a ticket.
      */
@@ -37,22 +68,66 @@ public class TicketMachine
     {
         return price;
     }
-
+    //missing return statement
     /**
      * Return the amount of money already inserted for the
      * next ticket.
      */
-    public int getBalance()
+    public int getAmount()
     {
         return balance;
     }
 
     /**
+     * Return the total amount of money if additional money 
+     * is inserted to the balance.
+     */
+    public int getTotal()
+    {
+        return total;
+    }
+
+    /**
      * Receive an amount of money in cents from a customer.
      */
     public void insertMoney(int amount)
     {
-        balance = balance + amount;
+        balance += amount;
+    }
+
+    /**
+     * Increase score by the given number of points.
+     */
+    public void increase(int points)
+    {
+        score += points;
+    }
+
+    /**
+     * Reduce price by the given amount.
+     */
+    public void discount(int amount)
+    { 
+        price-= amount;
+    }
+
+    /**
+     * Print the message to insert the correct amount of money.
+     */
+    public void prompt()
+    { 
+        System.out.println("Please insert the correct amount of money.");
+    }//2.36 Print out line: # price cents.
+    //2.37 Prints the same at 2.36.
+    // Neither option has the price variable. They have a price string.  
+    // String does not represent price's state and cannot be mutated.
+
+    /**
+     * Print the price of the ticket.
+     */
+    public void showPrice()
+    { 
+        System.out.println("The price of a ticket is " + price + " cents.");
     }
 
     /**

bluej.pkg

@@ -1,16 +1,16 @@
 #BlueJ package file
-editor.fx.0.height=722
+editor.fx.0.height=717
 editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+editor.fx.0.x=692
+editor.fx.0.y=31
 objectbench.height=101
-objectbench.width=461
+objectbench.width=776
 package.divider.horizontal=0.6
 package.divider.vertical=0.8007380073800738
 package.editor.height=427
 package.editor.width=674
-package.editor.x=1067
-package.editor.y=119
+package.editor.x=639
+package.editor.y=82
 package.frame.height=600
 package.frame.width=800
 package.numDependencies=0

package.bluej

@@ -1,16 +1,16 @@
 #BlueJ package file
-editor.fx.0.height=722
+editor.fx.0.height=717
 editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+editor.fx.0.x=692
+editor.fx.0.y=31
 objectbench.height=101
-objectbench.width=461
+objectbench.width=776
 package.divider.horizontal=0.6
 package.divider.vertical=0.8007380073800738
 package.editor.height=427
 package.editor.width=674
-package.editor.x=1067
-package.editor.y=119
+package.editor.x=639
+package.editor.y=82
 package.frame.height=600
 package.frame.width=800
 package.numDependencies=0