02115 Java Programming


02115 Java Programming
Autumn 2011

Week plan #6

For the week 3. October - 7. October

Preparations for the week

The primary subject of today is how to design and develop an application. First, a cinema booking system is investigated in Chapter 13 of the BK textbook, and next week a case study in Chapter 14 is considered.

The mandatory assignment is related to the subject of Chapter 13.

I think it's a good idea to study in detail the class structure, the responsibilities of each class, the chosen data structures and how the classes work together in the two projects foxes-and-rabbits (Chapter 10) and address-book (Chapter 12).

By solving the mandatory assignment you make the final steps towards being able to develop well structured applications like the above mentioned two projects. And not to forget: Write a documentation of the work carried out, including testing.

The lectures

We will cover selected parts of the BK textbook, primarily the following parts:
- Chapter 12, pages 407-423
- Chapter 13, pages 424-443

Exercises at the PC's

Exercises are taken solely from the BK textbook:

Chapter 12:
12.33 - 12.34
12.38 and 12.40
12.51

After the lectures

In the light of the requirements to a solution of the mandatory assignment find out about your needs to strengthen your knowledge and skills where appropriate.

The lectures last week and this week has also taken examples of the PS textbook to supply sections 12.4 - 12.10 of the BK textbook. E.g. section 12.4.5 is useful: On how to avoid creating objects when the parameter values given to a constructor does not make sense.
And what about object serialization ? (supply with PS section 23.12)

Follow up from the BK textbook what's needed, for Chapter 12 look at:

The use of assertions is the subject of Section 12.7 (pages 407-410) and is the basis of the JUnit testing facility described in Chapter 6.
Advices on error recovery and avoidance are given in Section 12.8 (pages 410-413).
Section 12.9 (pages 413-422) introduces some fundamentals of file-based input/output as stated in the section introduction which refers to the Sun tutorial for further reading:
Input/output in Java

Besides the above mentioned sections of the PS textbook read the following sections:

Section 23, pages 110-133, informs us on the Java input/output system using streams. That section has to be read and studied over and over again and to be used as a reference.
The overview given on pages 110-111 is important, but it's difficult to handle how streams can/should be created from other streams.
The creation of the BufferedReader instance r in Example 140 is explained in the lines 10-13 of page 111.
The examples of section 12.9 of the BK textbook give some simple examples of creating streams from other streams

The PS lecture examples from last week were Example 89, Example 80 (refer to the ready-to-run example program), and Example 90

Jens Thyge Kristensen, Email: jtk@imm.dtu.dk

Newest edition: 30. September (minor textual corrections)
Previous editions:
- 27. September