Maurice Russ

CopyOfTicketMachine.java

@@ -0,0 +1,98 @@
+/**
+ * CopyOfTicketMachine models a naive ticket machine that issues
+ * flat-fare tickets.
+ * The price of a ticket is specified via the constructor.
+ * It is a naive machine in the sense that it trusts its users
+ * to insert enough money before trying to print a ticket.
+ * It also assumes that users enter sensible amounts.
+ *
+ * @author David J. Barnes and Michael Kolling
+ * @version 2008.03.30
+ */
+public class CopyOfTicketMachine
+{
+    // The price of a ticket from this machine.
+    private Integer price;
+    // The amount of money entered by a customer so far.
+    private Integer balance;
+    // The total amount of money collected by this machine.
+    private Integer total;
+    // The number of tickets printed.
+    private Integer ticketNumber;
+
+    /**
+     * Create a machine that issues tickets of the given price.
+     * Note that the price must be greater than zero, and there
+     * are no checks to ensure this.
+     */
+    public CopyOfTicketMachine(Integer ticketCost)
+    {
+        price = ticketCost;
+        balance = 0;
+        total = 0;
+        ticketNumber = 0;
+    }
+
+    /**
+     * Return the price of a ticket.
+     */
+    public Integer getPrice()
+    {
+        return price;
+    }
+
+    /**
+     * Return ticketNumber.
+     * (Increments on each print.)
+     */
+    public Integer getTicketNumber()
+    {
+        return ticketNumber;
+    }
+
+    /**
+     * Return the amount of money already inserted for the
+     * next ticket.
+     */
+    public Integer getBalance()
+    {
+        return balance;
+    }
+
+    /**
+     * Receive an amount of money in cents from a customer.
+     */
+    public Integer insertMoney(Integer amount)
+    {
+        balance = balance + amount;
+        return balance;
+    }
+
+    public Integer calculateTotal(){
+        total = balance + total;
+        return total;
+    }
+
+    public Integer incrementTicketNumber(){
+        ticketNumber++;
+        return ticketNumber;
+    }
+
+
+    /**
+     * Print a ticket.
+     * Update the total collected and
+     * reduce the balance to zero.
+     */
+    public String printTicket()
+    {
+        //Increment the number of tickets printed
+        incrementTicketNumber();
+        // Update the total collected with the balance.
+        total = total + balance;
+        // Clear the balance.
+        balance = 0;
+
+        return "Ticket price: " + price + " cents. " + "Your total is " + total + ".";
+    }
+}

README.md

@@ -18,12 +18,18 @@ Work through all these exercises. You edit this file with your answers for these
 ### Exercise 2.2
 * What value is returned if you check the machine’s balance after it has printed a ticket?
 
+/*0;*/
+
+
 ### Exercise 2.3
 * Experiment with inserting different amounts of money before printing tickets.
 	* Do you notice anything strange about the machine’s behavior?
 	* What happens if you insert too much money into the machine – do you receive any refund?
 	* What happens if you do not insert enough and then try to print a ticket?
 
+
+	/*Strings with the ticket price and your total. All of the money is taken. No refund is given. No balance was shown but it still pints a ticket.;*/
+
 ### Exercise 2.4
 * Try to obtain a good understanding of a ticket machine’s behavior by interacting with it on the object bench before we start looking at how the `TicketMachine` class is implemented in the next section.
 
@@ -32,9 +38,19 @@ Work through all these exercises. You edit this file with your answers for these
 	* Buy a ticket from that machine.
 	* Does the printed ticket look different?
 
+	?*The ticket are the same. The sting with the total is the only difference.;*/
+
 ### Exercise 2.6
 * Write out what you think the outer wrappers of the `Student` and `LabClass` classes might look like – do not worry about the inner part.
 
+
+/*public class Student(){
+
+}
+
+public class LabClass(){
+
+};*/
 ### Exercise 2.7
 Does it matter whether we write<br>
 `public class TicketMachine`<br>
@@ -47,17 +63,28 @@ in the outer wrapper of a class?
 	* What error message do you get when you now press the compile button?
 	* Do you think this message clearly explains what is wrong?
 
+	/*Yes. Public must be in front of class.
+	"Error(s) found in class" "Press K or click link on right to go to next error."
+	Yes;*/
+
+
 ### Exercise 2.8
 * Check whether or not it is possible to leave out the word `public` from the outer wrapper of the `TicketMachine` class.
 
+/*Yes, you can.;*/
+
 ### Exercise 2.9
 * From your earlier experimentation with the ticket machine objects within BlueJ you can probably remember the names of some of the methods – `printTicket`, for instance.
 	* Look at the class definition in Code 2.1 and use this knowledge, along with the additional information about ordering we have given you, to try to make a list of the names of the fields, constructors, and methods in the `TicketMachine` class.
 	* Hint: There is only one constructor in the class.
 
+	/*The fields are price, balance, total. The constructor is TicketMachine. The methods are the getters getPrice, getTicketNumber and getBalance.;*/
+
+
 ### Exercise 2.10
 * Do you notice any features of the constructor that make it significantly different from the other methods of the class?
 
+ /*It is another TicketMachine and parameters and is assigning values to price, balance, total and ticketNumber.;*/
 ### Exercise 2.11
 * What do you think is the type of each of the following fields?
 
@@ -66,6 +93,7 @@ private int count;
 private Student representative;
 private Server host;
 ```
+/*They are private fields.;*/
 
 ### Exercise 2.12
 * What are the names of the following fields?
@@ -75,6 +103,8 @@ private boolean alive;
 private Person tutor;
 private Game game;
 ```
+/*The fields are alive, tutor, and game.;*/
+
 ### Exercise 2.13
 
 In the following field declaration from the TicketMachine class<br>
@@ -89,29 +119,38 @@ possible?
 	* Check by pressing the compile button to see if there is an error message.
 	* Make sure that you reinstantiate the original version after your experiments!
 
+ /*Yes.You private is class type. It must must have a class definition before int. int must then be declared as price.;*/
+
 ### Exercise 2.14
 * Is it always necessary to have a semicolon at the end of a field declaration?
 * Once again, experiment via the editor.
 * The rule you will learn here is an important one, so be sure to remember it.
 
+ /*The answer is usually. It is not needed at the end of a block, }.;*/
 
 ### Exercise 2.15
 * Write in full the declaration for a field of type `int` whose name is `status`.
 
+/*private int status;*/
+
 ### Exercise 2.16
 * To what class does the following constructor belong?
 ```
 public Student(String name)
 ```
+/*public*/
 
 ### Exercise 2.17
 * How many parameters does the following constructor have and what are their types?
 ```
 public Book(String title, double price)
 ```
+/*2*/
 
 ### Exercise 2.18
 * Can you guess what types some of the `Book` class’s fields might be?
 * Can you assume anything about the names of its fields?
 
+/*author, genre, pageNumber, publisher, dateOfPublish*/
+
 READ upto and INCLUDING section 2.15 of this chapter.

TicketMachineTest.java

@@ -13,6 +13,9 @@
  */
 public class TicketMachineTest
 {
+    private TicketMachine ticketMa1;
+    private java.lang.String string1;
+
     /**
      * Default constructor for test class TicketMachineTest
      */
@@ -23,6 +26,15 @@ public TicketMachineTest()
     @Before
     public void setUp()
     {
+        ticketMa1 = new TicketMachine(20);
+        ticketMa1.getTicketNumber();
+        ticketMa1.insertMoney(300);
+        string1 = ticketMa1.printTicket();
+        ticketMa1.getBalance();
+        ticketMa1.incrementTicketNumber();
+        ticketMa1.getTicketNumber();
+        ticketMa1.calculateTotal();
+        ticketMa1.getBalance();
     }
 
     @After

bluej.pkg

@@ -1,20 +1,23 @@
 #BlueJ package file
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
 editor.fx.0.height=722
 editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+editor.fx.0.x=1098
+editor.fx.0.y=203
 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.width=682
+package.editor.x=1093
+package.editor.y=57
 package.frame.height=600
 package.frame.width=800
-package.numDependencies=0
-package.numTargets=1
+package.numDependencies=1
+package.numTargets=3
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -24,9 +27,24 @@ readme.width=47
 readme.x=10
 readme.y=10
 target1.height=50
-target1.name=TicketMachine
+target1.name=TicketMachineTest
 target1.showInterface=false
-target1.type=ClassTarget
+target1.type=UnitTestTargetJunit4
 target1.width=120
-target1.x=80
-target1.y=50
+target1.x=110
+target1.y=20
+target2.association=TicketMachineTest
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50
+target3.height=50
+target3.name=CopyOfTicketMachine
+target3.showInterface=false
+target3.type=ClassTarget
+target3.width=150
+target3.x=10
+target3.y=110

package.bluej

@@ -1,20 +1,23 @@
 #BlueJ package file
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
 editor.fx.0.height=722
 editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+editor.fx.0.x=1098
+editor.fx.0.y=203
 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.width=682
+package.editor.x=1093
+package.editor.y=57
 package.frame.height=600
 package.frame.width=800
-package.numDependencies=0
-package.numTargets=1
+package.numDependencies=1
+package.numTargets=3
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -24,9 +27,24 @@ readme.width=47
 readme.x=10
 readme.y=10
 target1.height=50
-target1.name=TicketMachine
+target1.name=TicketMachineTest
 target1.showInterface=false
-target1.type=ClassTarget
+target1.type=UnitTestTargetJunit4
 target1.width=120
-target1.x=80
-target1.y=50
+target1.x=110
+target1.y=20
+target2.association=TicketMachineTest
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50
+target3.height=50
+target3.name=CopyOfTicketMachine
+target3.showInterface=false
+target3.type=ClassTarget
+target3.width=150
+target3.x=10
+target3.y=110