diff --git a/README.md b/README.md
index 4f153b0..cb39cb0 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,15 @@ 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?
+The balance returned 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?
+ * Do you notice anything strange about the machine’s behavior? Yes
+ * What happens if you insert too much money into the machine – do you receive any refund?
+ No, there is no refund.
* What happens if you do not insert enough and then try to print a ticket?
+ The machine still prints a ticket and resets the balance to zero
### 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.
@@ -30,11 +33,15 @@ Work through all these exercises. You edit this file with your answers for these
### 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?
+ * Does the printed ticket look different? Yes, the ticket price value has changed
### 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
`public class TicketMachine`
@@ -42,38 +49,49 @@ or
`class public TicketMachine`
in the outer wrapper of a class?
+Yes, public must come before 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? Yes, the class turns red
+ * What error message do you get when you now press the compile button? Identifier expected error
+ * 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.
+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.
+ fields : balance, price, total, ticketNumber
+ constrocturs: TicketMachine(int ticketPrice)
+ methods: insertMoney(int amount), printTicket(), getBalance(), insertMoney(int amount)
+
+
### Exercise 2.10
-* Do you notice any features of the constructor that make it significantly different from the other methods of the class?
+* Do you notice any features of the constructor that make it significantly different from the other methods of the class
+
+It has no return type, it is Capitalised, It's name is the same as the class
### 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; //Primitive Integer
+private Student representative; //Object of type Student
+private Server host; //Object of type 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; //Var name is "alive"
+private Person tutor; //Var name is "tutor"
+private Game game; //Var name is "game"
```
### Exercise 2.13
@@ -82,15 +100,15 @@ In the following field declaration from the TicketMachine class
```java
private int price;
```
-does it matter which order the three words appear in?
+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?
+possible? Other orderings are not possible, the class diagram turns red to signify that there is an error
* 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?
+* 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.
@@ -98,20 +116,26 @@ possible?
### Exercise 2.15
* Write in full the declaration for a field of type `int` whose name is `status`.
+```Java
+int status;
+```
+
### Exercise 2.16
* To what class does the following constructor belong?
```
public Student(String name)
```
+The class Student
### Exercise 2.17
* How many parameters does the following constructor have and what are their types?
```
public Book(String title, double price)
```
+Two, a string and double.
### 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?
+* Can you guess what types some of the `Book` class’s fields might be? string and a double
+* Can you assume anything about the names of its fields? Perhaps title and price
READ upto and INCLUDING section 2.15 of this chapter.
diff --git a/TicketMachine.java b/TicketMachine.java
index 630c4ea..00a84bc 100644
--- a/TicketMachine.java
+++ b/TicketMachine.java
@@ -9,7 +9,7 @@
* @author David J. Barnes and Michael Kolling
* @version 2008.03.30
*/
-public class TicketMachine
+class TicketMachine
{
// The price of a ticket from this machine.
private Integer price;
diff --git a/bluej.pkg b/bluej.pkg
index bf25784..767984c 100644
--- a/bluej.pkg
+++ b/bluej.pkg
@@ -1,20 +1,27 @@
#BlueJ package file
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
+editor.fx.0.height=977
+editor.fx.0.width=922
+editor.fx.0.x=-200
+editor.fx.0.y=-1057
+editor.fx.1.height=977
+editor.fx.1.width=896
+editor.fx.1.x=723
+editor.fx.1.y=-1057
objectbench.height=101
-objectbench.width=461
+objectbench.width=508
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=0.8497913769123783
+package.editor.height=604
+package.editor.width=406
+package.editor.x=2
+package.editor.y=23
+package.frame.height=777
+package.frame.width=532
+package.numDependencies=1
+package.numTargets=2
package.showExtends=true
package.showUses=true
project.charset=UTF-8
@@ -24,9 +31,16 @@ 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=140
+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
index bf25784..767984c 100644
--- a/package.bluej
+++ b/package.bluej
@@ -1,20 +1,27 @@
#BlueJ package file
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=709
-editor.fx.0.y=113
+dependency1.from=TicketMachineTest
+dependency1.to=TicketMachine
+dependency1.type=UsesDependency
+editor.fx.0.height=977
+editor.fx.0.width=922
+editor.fx.0.x=-200
+editor.fx.0.y=-1057
+editor.fx.1.height=977
+editor.fx.1.width=896
+editor.fx.1.x=723
+editor.fx.1.y=-1057
objectbench.height=101
-objectbench.width=461
+objectbench.width=508
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=0.8497913769123783
+package.editor.height=604
+package.editor.width=406
+package.editor.x=2
+package.editor.y=23
+package.frame.height=777
+package.frame.width=532
+package.numDependencies=1
+package.numTargets=2
package.showExtends=true
package.showUses=true
project.charset=UTF-8
@@ -24,9 +31,16 @@ 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=140
+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