ANONYMOUS wrote I am not even sure what you are asking here. What do you mean by "specify the directory ... at the very beginning of every source code"? If you mean declare them all as part of a package, no, that would cause the specified way of invo...

The specification does not explicitly require you to write a constructor for every class, and I do not see where in the rubric you would lose marks for not writing a pointless constructor. It definitely wouldn't affect correctness, so the only place y...

ANONYMOUS wrote We are getting them marked as quickly as we are able, but there are over 400 students in this class and most of our markers are also students with their own schedules. With luck, I am hoping to get them done by the start of next week, ...

While your notes are mostly correct, they do contain a number of errors. I am probably not going to be able to address them all here, but I have already explained the answers in a lecture and a PDF of the answers is available on LMS under the Mid-Sem...

ANONYMOUS wrote The lab worksheet instructs you to implement subclasses of the SetExpression abstract class. This requires you to implement the contains method. The worksheet and the comment on the contains(elem) method also explain that it "Ev...

The assessed lab worksheet provides instructions on how describe() should behave for each different class. It does not ask you to simplify or reformat expressions. To do so would in fact be considered wrong, as it is no longer a description of the ...

ANONYMOUS wrote The describe() method is required to return a String . The worksheet specifies the format of string that a Range object should return. Changing the representation as you are suggesting would not be in compliance with the specific...

ANONYMOUS wrote I will add Please do not print anything. No part of the specification asks for you to print anything, and while doing so would not make your code wrong, and so would likely not cost you marks (except perhaps for style, given it is un...

ANONYMOUS wrote You do not need to use anything that we have not covered in the lectures, previous labs, or this lab sheet. As was said in one of the lectures The purpose of Ov r i e s t x r s o r i t n h t t i e h d s o l v r i e o e f...

See the clarifications added to the lab sheet. In summary You are not expected to handle errors outside the specification. For the particular example you give, I will point out that if our tests attempted to pass a float to a constructor expecting ...

See the clarifications added to the lab sheet. You do not need to handle errors, as this is not a task given in the specification. If your code behaves as is required of it, that is sufficient. The specification does not impose any requirements on the...

I believe cssubmit will happily support either without issue, but per the instructions I would prefer you submit all the files not in a zip. Submitting a zip will not cost you any marks, but might make marking a little more of a headache as the marke...

ANONYMOUS wrote I tried to choose the wording "communicate intent and reason" carefully. It is not necessary to simply narrate what your code is doing, as the code already says that clearly. Your comments should explain why you have decided to do t...

Correct. The reason it is specified as 11 59 am in the lab sheet is to avoid the common confusion about midday being 12 00 pm.

ANONYMOUS wrote Dependency can have various meanings, and I am not sure how you are using it here. The same goes for the concept of flexibility. As a sweeping generalization, I would say that interfaces are "more flexible" than inheritance. Interfaces...

ANONYMOUS wrote This is an example of method (in this case specifically constructor) overloading. There is no universally accepted definition of polymorphism, but overloading is generally considered an example of "ad hoc polymorphism", where the behav...

ANONYMOUS wrote These have now been released on the Mid-Semester Test Info page on LMS.

Update 2024-04-16 Answers to the mid-semester test have been made available on the LMS Mid-Semester Test Info page.

ANONYMOUS wrote This is a quirk of programming convention that was unfortunately not specified in the question In programming, we often do geometry in "screen coordinates" such that the origin is the top left corner of the screen, with x increasing...

ANONYMOUS wrote The official information we have given is that it may cover any material up to and including week 6. Since, as you say, unit testing was only covered briefly in lecture 12, the test would only be able to include questions on that brie...

ANONYMOUS wrote You should try to solve the problem yourself without looking at the answers first, so no, there is no need to follow the example answers exactly. It is not entirely clear what you mean by "it does not edit the grid in the intended wa...

You can get either to work, but given that the isPrime method has no reason to depend on any object state, static makes the most sense.

Yes, though with at least one minor alteration. Due to venue capacity restrictions we have had to move the midsem to 17 00 on the same day. There should be an entry in your timetables. I am trying to get the unit outline updated currently. For all ass...

For context for anyone who is confused, this student emailed the unit email inbox with the above question, and I answered their question and asked them to post their question and the result here for the benefit of other students. So the first message...

There are a couple of options for how to get input in a Java program that we have covered so far... You can indeed use Scanner . You can construct a Scanner object wherever it makes sense (probably in main , for a little example like this) and use...

Update I have uploaded the old recording to Echo and it is now processing and should be available shortly. Let me know if there are any further issues.

Hi all, We are aware of this issue. It seems there was an issue with the lavalier mic pack but not with the hand mic. We are digging up a lecture recording from last year, and will post that ASAP. Cheers, Gozz

This unit has a mid-semester test that will be held in week 7 (calendar week 16). Due to capacity limitations of the venues we have been assigned for lectures, we require a different venue for this test. This alternative venue is not available at our...

Since in this unit we will only ask you to submit Java code, not compiled bytecode, all that matters is that any code you submit is compliant with the Java 11 specification. So long as you don't use any features introduced in more recent versions, th...

Hi Bill, Particularly since one of the selling points of Java is "write once run anywhere", there are no requirements to use a particular system. We will probably use OpenJDK by default when marking, but since we are using Java version 11 in this unit...