completed lab

README.md

@@ -18,28 +18,52 @@ Work through all these exercises. You edit this file with your answers for these
 * Use `getPrice` method to view the value of the price of the tickets that was set when this object was created.
 * Use `insertMoney` method to simulate inserting an amount of money into the machine.
 * Use `getBalance` to check that the machine has a record of the amount inserted.
-	* You can insert several separate amounts of money into the machine, just like you might insert multiple coins or notes into a real machine. Try inserting the exact amount required for a ticket. As this is a simple machine, a ticket will not be issued automatically, so once you have inserted enough money, call the `printTicket` method. A facsimile ticket should be printed in the BlueJ terminal window.
+    * You can insert several separate amounts of money into the machine, just like you might insert multiple coins or notes into a real machine. Try inserting the exact amount required for a ticket. As this is a simple machine, a ticket will not be issued automatically, so once you have inserted enough money, call the `printTicket` method. A facsimile ticket should be printed in the BlueJ terminal window.
 
 ### Exercise 2.2
 * What value is returned if you check the machine’s balance after it has printed a ticket?
+    * Value is 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?
+    * Do you notice anything strange about the machine’s behavior?
+
+        * Only difference I have noticed are my own inputs into the machine, i.e. pricing the tickets and inserting different amounts of money
+
+    * What happens if you insert too much money into the machine – do you receive any refund?
+
+        * No refund was issued. When checking the balance, the balace states 0.
+    * What happens if you do not insert enough and then try to print a ticket?
+
+        * Nothing happens from the string other than the total is updated. 
 
 ### 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.
 
 ### Exercise 2.5
 * Create another ticket machine for tickets of a different price.
-	* Buy a ticket from that machine.
-	* Does the printed ticket look different?
+    * Buy a ticket from that machine.
+    * Does the printed ticket look different?
+
+        * No
 
 ### 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
+{
+    Inner part of the class omitted.
+}
+```
+```
+public class LabClass
+{
+    Inner part of the class omitted.
+}
+```
+
+
 ### Exercise 2.7
 Does it matter whether we write<br>
 `public class TicketMachine`<br>
@@ -48,21 +72,35 @@ or<br>
 in the outer wrapper of a class?
 
 * Edit the source of the `TicketMachine` class to make the change and then close the editor window.
-	* Do you notice a change in the class diagram?
-	* What error message do you get when you now press the compile button?
-	* Do you think this message clearly explains what is wrong?
+    * Do you notice a change in the class diagram?
+
+        * The Ticket Machine has red hash lines in the diagram box.
+    * What error message do you get when you now press the compile button?
+
+        * "Error(s) found in class
+    * Do you think this message clearly explains what is wrong?
+
+        * It is not clearly explains but it does give good hints, such as where they error is located.
 
 ### Exercise 2.8
 * Check whether or not it is possible to leave out the word `public` from the outer wrapper of the `TicketMachine` class.
 
+    * No compilation errors come up and the scope highlighting still appears to be correct.
+
 ### 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.
+    * 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.
+
+        * Constructor: TicketMachine
+        * Fields: price, balance, total, ticketNumber
+        * Methods: getPrice, getTicketNumber, getBalance, insertMoney, calculateTotal, incrementTicketNumber
 
 ### Exercise 2.10
 * Do you notice any features of the constructor that make it significantly different from the other methods of the class?
 
+    * When trying creating a new object and looking at the options to call upon, the constructor is not listed.
+
 ### Exercise 2.11
 * What do you think is the type of each of the following fields?
 
@@ -71,6 +109,9 @@ private int count;
 private Student representative;
 private Server host;
 ```
+1. int is an integer
+2. Student is a string
+3. Server is a string
 
 ### Exercise 2.12
 * What are the names of the following fields?
@@ -80,6 +121,10 @@ private boolean alive;
 private Person tutor;
 private Game game;
 ```
+1. private boolean alive; has the name "alive"
+2. private Person tutor; has the name "tutor"
+3. private Game game; has the name "game"
+
 ### Exercise 2.13
 
 In the following field declaration from the TicketMachine class<br>
@@ -88,35 +133,59 @@ In the following field declaration from the TicketMachine class<br>
 private int price;
 ```
 does it matter which order the three words appear in?
+
+1.  Yes the order matters
+
 * Edit the `TicketMachine` class to try different orderings. After each change, close the editor.
-	* Does the appearance of the class diagram after each change give you a clue as to whether or not other orderings are
+    * Does the appearance of the class diagram after each change give you a clue as to whether or not other orderings are
 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!
+
+        * In each different arrangement in the words other than the original, there is are hased lines for not compiling it.
+
+    * Check by pressing the compile button to see if there is an error message.
+
+        * I recieve a copilation error when I try to compile. 
+
+    * Make sure that you reinstantiate the original version after your experiments!
 
 ### Exercise 2.14
 * Is it always necessary to have a semicolon at the end of a field declaration?
+
+    * Yes it is 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.
 
 
 ### Exercise 2.15
 * Write in full the declaration for a field of type `int` whose name is `status`.
 
+```java
+private int status
+```
+
 ### Exercise 2.16
 * To what class does the following constructor belong?
 ```
 public Student(String name)
 ```
+* It belongs to class "Student"
 
 ### Exercise 2.17
 * How many parameters does the following constructor have and what are their types?
 ```
 public Book(String title, double price)
 ```
+* This has 2 parameters, a string and a double respectvely.
 
 ### Exercise 2.18
 * Can you guess what types some of the `Book` class’s fields might be?
+
+   * Some of the fields might be name of the book or author
+
 * Can you assume anything about the names of its fields?
 
+    * I can assume integers can be used for things such an index or author's notes in the book.
+
+
 READ upto and INCLUDING section 2.15 of this chapter.

TicketMachineTwo.java

@@ -0,0 +1,98 @@
+/**
+ * TicketMachineTwo 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 TicketMachineTwo
+{
+    // 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 TicketMachineTwo(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 + ".";
+    }
+}