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CSC72003 – Programming II
Assignment 1
Weight: 20% of your final mark
Due: 14th December 2018 at 10 pm
Specifications
Your task is to complete various exercises in
BlueJ, using the Java language, and to submit
these via the MySCU link created for this
purpose.
The exercises may be found at the end of topics
1 to 5 in your study guide, as well as below.
Marking criteria includes:
• Use of correct coding style, including the use
of comments;
• Accuracy of coding;
• Use of suitable coding structures;
• Correct submission as required.
Getting Help
This assignment is to be completed individually.
It is the opportunity to gain an understanding of
the concepts of object oriented programming
and coding syntax on which later learning will be
based. It is important that you master these
concepts yourself. Since you are mastering
fundamental skills, you are permitted to work
from the examples in the study guide or
textbook but you must acknowledge assistance
from other textbooks or classmates. You must
not use online material or help from others, as
this would prevent you from mastering these
concepts.
Who can you get help from? Use this diagram to
determine from whom you may seek help with
your program.
| Lecturer | Tutors | Online Forums |
| Relatives | Students outside unit |
Hired coders |
| Classmates | Private Tutors |
Other |
Encouraged
Attribution Required
Ask tutor
Not acceptable
Assignment Questions
Question 1
[From Topic 1]
Open the house project from Topic 1. Open the
terminal window and record method calls.
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Create a picture with at least 6 objects,
recording all method calls.
Take a screenshot of your picture and add the
pasted list of method calls needed to create the
picture.
Your work should be in a Word document, with
your name and student ID in the footer, as well
as “CSC72003 Ass 1 Q1”. Call your document by
your username_Q1.docx. Save this document in
a folder called username_A1. For example, my
folder would be called rmason10_A1.
You will save all your work in this folder, and zip
it to submit at the end of your assignment.
Question 2
[From Topic 2]
Create a new BlueJ project called your
username-A1Q2. For example, mine would be
rmason10-A1Q2.
Click on New Class and give the class a name of
Person. Make sure “Java” and “class” are
selected.
Write a description of your new Class in the top
comments. Make sure you put in your name as
the author and give the version as the date you
last worked on this exercise.
Add definitions for the following fields:
• a name field of type String
• an age field of type int
• an eyeColour field of type String
• a boolean field called canDrive
Write a constructor for your Person class that
takes two parameters – the first of type String
called myName, and the second of type int
called myAge. Set the initial values of the
Person class’s fields, using the constructor.
Write an accessor method called getName() that
returns the value of the name field.
Write a mutator method called setAge() that
takes a single parameter of type int and sets the
value of the age field.
Work out what other accessor and mutator
methods would be useful for this class and add
them.
Write a method called printDetails, which prints
out all the details of a Person object. For
example: if the name field holds the value
“Helen” then the printDetails would print (in
part):
The name of this person is Helen.
Take into account the canDrive status. The
printDetails() method should print a line saying
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either that the person can drive, or the person
cannot drive.
Zip the project folder and save in the assignment
folder.
Question 3.
[From workshop Topic 3]
Create a new BlueJ project called your
username-A1Q3. For example, mine would be
rmason10-A1Q3.
Create a class, Heater, that contains four fields,
temperature, increment, max and min, all of
whose type is double.
Make sure you write a description of your new
Class in the comments, with your name as
author and date as the last date you worked on
this exercise.
Define a constructor that takes and sets the min,
max and sets the temperature to 20.0, and
increment to 1.0.
Also define a constructor that takes no
parameters. The temperature field should be set
to the value of 20.0 in this constructor,
increment to 1.0, and maximum and minimum
to reasonable amounts.
Define the mutators warmer and cooler, whose
effect is to increase or decrease the value of
temperature by the increment respectively.
The mutator methods should not let the
temperature be set to a value higher than max,
or lower than min. Add a mutator method that
sets the value of the increment. Make sure you
add a check to make sure that unrealistic values
are not passed to this mutator method.
Define an accessor method to return the value
of temperature.
Test your work.
Zip the project and include in your assessment
files.
Question 4
[From workshop Topic 4]
Create a new BlueJ project called your
username-A1Q4. For example, mine would be
rmason10-A1Q4. Create a class, FBNames,
which has one ArrayList field called names,
which holds a collection of Strings.
Make sure you write a description of your new
Class in the comments, with your name as
author and date as the last date you worked on
this exercise.
Define a constructor that initialises the
ArrayList. Note that you can add any other
initialisations that you feel are relevant.
Create methods to add elements, remove
elements and get the number of elements in the
collection. Make sure you add tests for errors
and sensible error messages.
Create a method called printFizzBuzz(). This
method should loop through the collection, and
print out the elements (each String on one line).
If the String starts with a, e, i, o or u, instead of
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printing the String, it should print “Fizz” on the
line. If the String starts with A, E, I, O or U,
instead of printing the String, it should print
“Buzz”.
For example, if the collection contained the
names “banana”, “Apple”, “orange”, “pear”,
“peach”, “kiwi fruit”, “Grape”, then the printout
would look like:
banana
Buzz
Fizz
pear
peach
kiwi fruit
Grape
Once you have finished your project, open the
terminal window in BlueJ and turn on record
method calls. Create a new FBNames class, and
then add at least 11 Strings. Make sure you
don’t use the same collection as my example.
Demonstrate removing an element, and then
find the number of elements using your
methods. Finally, run your FizzBuzz method.
Copy all your calls into a text file and save it in
your project folder.
Zip the project and include in your assessment
files.
Question 5
[From workshop Topic 5]
Part A:
Imagine you need to open a standard
combination dial lock but don’t know the
combination and don’t have a pair of bolt
cutters. Write a Java program in BlueJ with a
method that prints all possible combinations, so
you can print them on a piece of paper and
check off each one as you try it. Assume the
numbers on each dial range from zero to thirtysix and three numbers in sequence are needed
to open the lock.
Part B:
Suppose the lock isn’t a very good one and any
number that’s no more than two away from the
correct number in each digit will also work.
In other words if the combination is 17-6-32,
then 18-5-31, 19-4-32, 15-8-33 and many other
combinations will also open the lock.
Write another method that prints out a minimal
list of combinations you would need to try to
guarantee opening the lock.
Submission
You must zip the files in your folder into one zip
file called username_A1.zip For example, mine
would be rmason10_A1.zip.
Submit this file via the Assignment 1 link on
MySCU by the due date. Please leave enough
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time for it to upload, so do not submit at the last
minute!
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