DavidsTicket

README.md

@@ -17,23 +17,28 @@ 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?
+	// The machine will take any amount of money and still print a ticket
 	* What happens if you insert too much money into the machine – do you receive any refund?
+  // The machine does not give you a refund and keeps the extra money with a zero balance
 	* What happens if you do not insert enough and then try to print a ticket?
-
+  // The ticket will still print even through your total is less than the cost of 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.
 
 ### 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?
+// The ticket looks the same
 
 ### 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>
@@ -44,74 +49,84 @@ 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?
+	//The TicketMachine has lines through it and will not make an object
 	* What error message do you get when you now press the compile button?
+	// Identifier expected
 	* Do you think this message clearly explains what is wrong?
-
+  // The message lets you know that it needs an Identifier in the correct order to run
 ### 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 leave out "public" and it will still function the same
 
 ### 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.
+//fields (price, balance, total, ticketNumber)
+//constructors (TicketMachine)
+//methods (getPrice, getTicketNumber, getBalance, insertMoney, calculateTotal, incrementTicketNumber, printTicket)
 
 ### Exercise 2.10
 * Do you notice any features of the constructor that make it significantly different from the other methods of the class?
+// The constructor does not return anything, has defined variables and accepts two parameters,
 
 ### Exercise 2.11
 * What do you think is the type of each of the following fields?
 
 ```java
-private int count;
-private Student representative;
-private Server host;
+private int count; //int
+private Student representative;//Student
+private Server host;//Server
 ```
 
 ### Exercise 2.12
 * What are the names of the following fields?
 
 ```java
-private boolean alive;
-private Person tutor;
-private Game game;
+private boolean alive;//alive
+private Person tutor;//tutor
+private Game game;//game
 ```
 ### Exercise 2.13
 
 In the following field declaration from the TicketMachine class<br>
 
 ```java
-private int price;
+private Integer price;
 ```
 does it matter which order the three words appear in?
 * 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
-possible?
+	* Does the appearance of the class diagram after each change give you a clue as to whether or not other orderings are possible? // Yes, the ticket class shows lines through it to show it does not Work
 	* 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!
 
 ### 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.
-
+// A semicolon is always needed at the end of a field declaration
 
 ### Exercise 2.15
 * Write in full the declaration for a field of type `int` whose name is `status`.
+// public int status;
 
 ### Exercise 2.16
 * To what class does the following constructor belong?
 ```
 public Student(String name)
 ```
-
+// Student
 ### Exercise 2.17
 * How many parameters does the following constructor have and what are their types?
 ```
 public Book(String title, double price)
 ```
-
+// two (String, double)
 ### Exercise 2.18
 * Can you guess what types some of the `Book` class’s fields might be?
+// String, Integer, float
 * Can you assume anything about the names of its fields?
+// title, author, datePublished, publisher, numberOfPages
+
 
-READ upto and INCLUDING section 2.15 of this chapter.
+READ up to and INCLUDING section 2.15 of this chapter.

TicketMachine.java

@@ -9,16 +9,18 @@
  * @author David J. Barnes and Michael Kolling
  * @version 2008.03.30
  */
-public class TicketMachine
+ class public TicketMachine
 {
     // The price of a ticket from this machine.
-    private Integer price;
+    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;
+    //Exercise 2.15
+    private Integer status;
 
     /**
      * Create a machine that issues tickets of the given price.