ZipCodeCore · LakeLove · Jul 8, 2020
diff --git a/README.md b/README.md
@@ -22,12 +22,15 @@ 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?
+	>No refund is provided nor an additional ticket; the machine's balance is reset after printing
 	* What happens if you do not insert enough and then try to print a ticket?
+	>A ticket is printed
 
 ### 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.
@@ -36,32 +39,44 @@ Work through all these exercises. You edit this file with your answers for these
 * Create another ticket machine for tickets of a different price.
 	* Buy a ticket from that machine.
 	* Does the printed ticket look different?
+	>Yes. The ticket price and the total are different for each instance of TicketMachine
 
 ### 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>
 or<br>
 `class public TicketMachine`<br>
 in the outer wrapper of a class?
+>Yes, the latter will not compile
 
 * 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?
+	>Yes, red, slanted lines appeared on both the TicketMachine and TicketMachine Test classes
 	* What error message do you get when you now press the compile button?
+	>"invalid method declaration; return type required"
 	* Do you think this message clearly explains what is wrong?
+	>No
 
 ### Exercise 2.8
 * Check whether or not it is possible to leave out the word `public` from the outer wrapper of the `TicketMachine` class.
 
 ### 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.
+	>fields: price, balance, total, ticketNumber
+	>constructors: TicketMachine
+	>methods: getPrice, getTicketNumber, getBalance, insertMoney, calculateTotal, incrementTicketNumber, printTicket
 	* Hint: There is only one constructor in the class.
 
 ### Exercise 2.10
 * Do you notice any features of the constructor that make it significantly different from the other methods of the class?
+>Does not contain the return keyword
+>Does not include output type
 
 ### Exercise 2.11
 * What do you think is the type of each of the following fields?
@@ -71,6 +86,7 @@ private int count;
 private Student representative;
 private Server host;
 ```
+>int, Student, Server respectively
 
 ### Exercise 2.12
 * What are the names of the following fields?
@@ -80,6 +96,8 @@ private boolean alive;
 private Person tutor;
 private Game game;
 ```
+>alive, tutor, game respectively
+
 ### Exercise 2.13
 
 In the following field declaration from the TicketMachine class<br>
@@ -88,35 +106,43 @@ In the following field declaration from the TicketMachine class<br>
 private int price;
 ```
 does it matter which order the three words appear in?
+>Yes
+
 * 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
 	* 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?
+>Yes
 * 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`.
+>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)
 ```
+>2; String, double respectively
 
 ### Exercise 2.18
 * Can you guess what types some of the `Book` class’s fields might be?
+>String, double
 * Can you assume anything about the names of its fields?
+>Yes, they may be "title" or "price" or something referencing either of those ideas
 
 READ upto and INCLUDING section 2.15 of this chapter.
diff --git a/bluej.pkg b/bluej.pkg
@@ -1,20 +1,23 @@
 #BlueJ package file
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
-objectbench.height=101
-objectbench.width=461
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
+editor.fx.0.height=844
+editor.fx.0.width=676
+editor.fx.0.x=-60
+editor.fx.0.y=-1057
+objectbench.height=294
+objectbench.width=442
 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.frame.height=600
-package.frame.width=800
-package.numDependencies=0
-package.numTargets=1
+package.divider.vertical=0.5813630041724618
+package.editor.height=411
+package.editor.width=348
+package.editor.x=0
+package.editor.y=23
+package.frame.height=777
+package.frame.width=466
+package.numDependencies=1
+package.numTargets=2
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -24,9 +27,16 @@ 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.width=120
-target1.x=80
-target1.y=50
+target1.type=UnitTestTargetJunit4
+target1.width=130
+target1.x=10
+target1.y=110
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50
diff --git a/package.bluej b/package.bluej
@@ -1,20 +1,23 @@
 #BlueJ package file
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
-objectbench.height=101
-objectbench.width=461
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
+editor.fx.0.height=844
+editor.fx.0.width=676
+editor.fx.0.x=-60
+editor.fx.0.y=-1057
+objectbench.height=294
+objectbench.width=442
 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.frame.height=600
-package.frame.width=800
-package.numDependencies=0
-package.numTargets=1
+package.divider.vertical=0.5813630041724618
+package.editor.height=411
+package.editor.width=348
+package.editor.x=0
+package.editor.y=23
+package.frame.height=777
+package.frame.width=466
+package.numDependencies=1
+package.numTargets=2
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -24,9 +27,16 @@ 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.width=120
-target1.x=80
-target1.y=50
+target1.type=UnitTestTargetJunit4
+target1.width=130
+target1.x=10
+target1.y=110
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50