Added answers to README.md

README.md

@@ -22,12 +22,16 @@ 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 loses all added money after printing a ticket, regardless of amount.
 	* What happens if you insert too much money into the machine – do you receive any refund?
+	   No
 	* What happens if you do not insert enough and then try to print a ticket?
+	   It does not seem to print 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.
@@ -36,49 +40,73 @@ 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?
+	   No, 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 extends LabClass{
+
+	} 
+
+	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
 
 * 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, the arrow between Ticket Machine and TicketMachineTest disappeared
 	* 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?
+	     no, it is very vague
 
 ### Exercise 2.8
 * Check whether or not it is possible to leave out the word `public` from the outer wrapper of the `TicketMachine` class.
+    It is possible
 
 ### 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.
+	public class TicketMachine(int maxTickets){
+
+	}
 
 ### Exercise 2.10
 * Do you notice any features of the constructor that make it significantly different from the other methods of the class?
+    not really, I don't notice any differences worth mentioning
 
 ### Exercise 2.11
 * What do you think is the type of each of the following fields?
 
 ```java
-private int count;
+private int count;   
+     int
 private Student representative;
+     Student Class
 private Server host;
+     Server Class
 ```
 
 ### Exercise 2.12
 * What are the names of the following fields?
 
 ```java
 private boolean alive;
+    alive
 private Person tutor;
+    tutor
 private Game game;
+    game
 ```
 ### Exercise 2.13
 
@@ -88,35 +116,43 @@ 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?
+     No, it just turns red
 	* 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.
+     as far as I can tell
 
 
 ### Exercise 2.15
 * Write in full the declaration for a field of type `int` whose name is `status`.
+      int status = 0;
 
 ### Exercise 2.16
 * To what class does the following constructor belong?
 ```
 public Student(String name)
+     Student class
 ```
 
 ### 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
 ```
 
 ### Exercise 2.18
 * Can you guess what types some of the `Book` class’s fields might be?
+   int pages, String title, String author
 * Can you assume anything about the names of its fields?
+   Yes, they are written to be descriptive and you can tell what they would represent
 
 READ upto and INCLUDING section 2.15 of this chapter.

TicketMachine.java

@@ -95,4 +95,4 @@ public String printTicket()
 
         return "Ticket price: " + price + " cents. " + "Your total is " + total + ".";
     }
-}
+}

bluej.pkg

@@ -1,32 +1,48 @@
 #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=0
+editor.fx.0.width=0
+editor.fx.0.x=0
+editor.fx.0.y=0
+objectbench.height=125
+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.divider.vertical=0.7564575645756457
+package.editor.height=403
+package.editor.width=682
+package.editor.x=0
+package.editor.y=28
 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
-readme.height=58
+readme.height=60
 readme.name=@README
-readme.width=47
+readme.width=48
 readme.x=10
 readme.y=10
-target1.height=50
-target1.name=TicketMachine
+target1.height=70
+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=140
+target1.y=110
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50
+target3.height=70
+target3.name=README.md
+target3.type=TextTarget
+target3.width=120
+target3.x=10
+target3.y=110

package.bluej

@@ -1,32 +1,48 @@
 #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=0
+editor.fx.0.width=0
+editor.fx.0.x=0
+editor.fx.0.y=0
+objectbench.height=125
+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.divider.vertical=0.7564575645756457
+package.editor.height=403
+package.editor.width=682
+package.editor.x=0
+package.editor.y=28
 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
-readme.height=58
+readme.height=60
 readme.name=@README
-readme.width=47
+readme.width=48
 readme.x=10
 readme.y=10
-target1.height=50
-target1.name=TicketMachine
+target1.height=70
+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=140
+target1.y=110
+target2.height=50
+target2.name=TicketMachine
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=120
+target2.x=80
+target2.y=50
+target3.height=70
+target3.name=README.md
+target3.type=TextTarget
+target3.width=120
+target3.x=10
+target3.y=110