CSIT213代做、代写Java程序设计

日期：2024-05-27 09:56

School of Computing and Information Technology

University of Wollongong

Session: Autumn 2024

CSIT213 Autumn Session 2024

Assignment 3

Published on 05 May 2024 Due: Saturday 01 June, 11:30 pm

Total Marks: 15 marks

Scope

This assignment is related to the UML classes diagrams, Java classes definitions and implementations,

polymorphism, collectors, file input/output, and JavaFX.

Please read very carefully the information listed below.

General Java coding requirements:

Create your programs with good programming style and form using proper blank spaces, indentation, and

braces to make your code easy to read and understand.

Create identifiers with sensible names.

Add proper comments to describe your code segments where they are necessary for readers to understand

what your code intends to achieve.

Logical structures and statements are properly used for specific purposes.

Read the assignment specification carefully, and make sure that you follow the direction in this

assignment. In every assignment source file that you will submit on this subject, you must put the

following information in the header of your program:

/*------------------------------------------------------

My name:

My student number:

My course code: CSIT213

My email address:

Assignment number: 3

-------------------------------------------------------*/

A submission procedure is explained at the end of the specification.

It is recommended to solve the problems before attending the laboratory classes in order to efficiently use

supervised laboratory time.

A submission marked by Moodle as Late is treated as a late submission no matter how many seconds it is

late.

A policy regarding late submissions is included in the subject outline.

A submission of compressed files (zipped, gzipped, rared, tared, 7-zipped, lhzed, … etc) is not allowed. The

compressed files will not be evaluated.

An implementation that does not compile due to one or more syntactical or processing errors scores no marks.

It is expected that all tasks included in Assignment 3 will be solved individually without any cooperation

from the other students. If you have any doubts, questions, etc. please consult your lecturer or tutor during

lab classes or office hours. Plagiarism will result in a FAIL grade being recorded for the assessment task.  

Tasks

In this assignment, you are required to design and implement a Department Employee and Project (DEP)

System in Java. This system helps a company to manage employees and projects.

Implementation

The DEP system helps a company to manage departments, employees, projects and developers work on

projects. The system load data of departments, employees, projects, and works-on from the text files when

the program starts. Then the application shows a Graphic User Interface (GUI) so that a user can choose

what to do.

The UML class diagram of DEP is given below. You can add new classes, methods and attributes in the UML

class diagram but CANNOT modify or delete any existing classes, attributes, and methods. Your java

implementation must be consistent with the UML class diagram.

First, we define an interface class DataIO in a file DataIO.java that only consists of three abstract

methods: dataInput(Scanner), dataOutput(Formatter) and toString().

Define a superclass Employee and two sub-classes Admin and Developer in a file Employee.java. The

class Employee implements the interface DataIO. Two sub-classes override the methods defined in the

interface DataIO.

Define a class Department in a file Department.java that implements the methods of the interface

DataIO.

Define a class Project in a file Project.java that implements the method of the interface DataIO.

Define a class WorksOn in a file WorksOn.java that implements the methods of the interface DataIO.

The DEP class is defined in a file DEP.java that contains ArrayList containers containing objects of

Department, Employee, Project and WorksOn.

The DEP application initially loads data of departments, employees, projects, and works-on from the text

files departments.txt, employees.txt, projects.txt and workson.txt and stores them in

the containers by calling the methods loadDepartments(), loadEmployees(), loadProjects() and

loadWorksOn(), then the application shows the GUI, handles the events from the user.

The format of a file departments.txt contains data like

1, SALES, 110, 1234.00, 02/01/2012

2, ACCOUNTING, 120, 5566789.50, 30/10/2010

3, GAMES, 150, 100000.00, 01/03/2008

Each row is a record of a department. It contains a department number, name, manager number, budgets and

manager start date. Each field is separated by a comma (,) and a space ( ).

The format of a file employees.txt contains data like

A, 600, Willy, 01/01/1988, 41 Station Street Wollongong NSW 2500, M, 250.5, 0, 9, Cook Read

D, 700, Zhi, 12/09/1999, 112 Smith Street Windang NSW 2525, M, 80.2, 600, 9, C++ Java Python

D, 800, Mary, 03/10/2000, 26 Gibsons Road Figtree NSW 2525, F, 50.0, 700, 9, Java Python SQL

Each row is a record of an employee. The first character is the type of employee. The letter D means it is a

Developer record. The letter A means it is an Admin record. Each field is separated by a comma (,) and a

space ( ).

An admin record contains an employee number, name, date of birth, address, gender, salary, supervisor

number, department number, and skills.

A developer record contains an employee number, name, date of birth, address, gender, salary, supervisor

number, department number, and programming languages.

The format of a file projects.txt contains data like

1001, Computation, Microsoft, 8, 25000

1002, Study methods, Education committee, 3, 15000

Each row is a record of a project. A project record contains a project number, title, sponsor, department

number and budget. Each field is separated by a comma (,) and a space ( ).

The format of a file workson.txt contains data like

800, 1001, 10

510, 1001, 15

A works-on record consists of an employee (developer) number, a project number, and the hours.

Hint: You can open a text file, and then call the method

useDelimiter(", |\r\n|\n")

of a Scanner object before getting input data from a text file.

The detailed requests

You shall update the UML class diagram by adding new classes, methods, and attributes. Please make

sure your implementation is consistent with your UML class diagram.

The DEP class shall contain JavaFX components, such as Label, TextField, Button, ListView, etc.

With the GUI, a user can interact with the applications.

After initialization, the applicant shows lists of department numbers, employee numbers, project

numbers, works on information, and the pie chart of department budgets.

If a user clicks an item in a list, the details of the item are displayed in the text fields below that list.

If a user clicks a button Add, the application validates the developer and the project that selected

from the lists. If the developer hasn’t worked on the project, then pop up a dialog to get the hours,

and add the new works-on in the container workson and the list of workson in the GUI.

Display the validate messages in a text field of message.

If a user clicks a button Delete, the application pops up a confirmation dialog and deletes the

selected works-on record if it is confirmed. ? If a user clicks a button Save, the application saves the works-on information from the container

workson to a text file workson.txt and display a message about how many records have been

saved.

? The system shall be able to handle the exceptions during the interaction between the user and the

system. The exceptions may include invalid information when loading departments, employees,

projects and workson.

See the Processing examples below for more details.

Testing files

Download files departments.txt, employees.txt, projects.txt and workson.txt

from the Moodle site.

Compilation and testing

Compile your program by using the javac command.

javac --module-path "the-path-of-javafx-lib" --add-modules

javafx.controls DEP.java

Process your program by using the java command.

java --module-path "the-path-of-javafx-lib" --add-modules

javafx.controls DEP

The path of JavaFX lib is the path where you have installed the JavaFX library (.jar files). For example,

If a JavaFX library path is C:\MyApps\javafx-sdk-20.0.1\lib, then replace "the-path-ofjavafx-lib"

with "C:\MyApps\javafx-sdk-20.0.1\lib".

Test your program for all the events. See the examples of the processing results below for more details.

Note: Some important data, such as selected items, messages are emphasized in red rectangles of the screen

shots.

Processing examples

When the application starts, it loads data and stores them into the containers, then shows lists of

departments, employees, projects, works-on and the pie chart of department budgets like the GUI below.

If a user clicks an item of a list, the application displays the details of the item below the list.  

If a user clicks a button Add, the application validates the employee, project and works on information.

If a developer, project and works-on are valid, the application pops a dialog to get hours, and add the new

works-on to the list and the container workson.

If a user clicks a button Delete, the application pops a dialog to confirm the deletion, then delete the

selected works-on data from both container workson and the list of works-on.

If a user clicks a button Save, the application saves the works-on records into a file workson.txt and

display message such as 7 workson records are saved.

Deliverables

(1) UML class diagram (1 mark): Use the UMLet application tool to draw the class diagram. The class

diagram shall

contains at least the classes mentioned above.

contains the class name, fields, and methods definitions for each class.

use correct and sufficient UML notations.

specify the associations between classes.

specify the multiplicities for both sides of the associations.

Remember to use the CSIT213 palette!

Use the option File‐>Export as… to export a class diagram into a file in BMP format. Do not delete an

exported file. You will use it as one of the solutions for your task.

Insert the BMP files into a Word file assignment3Report.docx.

(2) Implementation (12 marks): Implement the application according to the UML class diagrams and the

processing examples described above. The program shall

be consistent with the UML class diagrams.

follow the conventions for naming all classes, variables, and methods.

provide sufficient comments.

use proper blank spaces, indentation, and braces to make your code easy to read and understand.

follow the specified implementation requests.

be able to show the GUI and handle all events that required.

(3) Compilation and test (2 marks): Compilation and test your Java program by using the command line

interface.

Please carefully compile your program. Make sure your program can pass the compilation by using

the javac command.

Test your program by using the java command.

Test your program for all the activities. See the examples of the processing results above for more

details.

Please do not define the package in your program (a special alert for students who use IDE to

complete the assignment).

Copy and paste the compilation and testing results into the Word file assignment3Report.docx.

When ready convert the Word file assignment3Report.docx into a pdf file

assignment3Report.pdf.

Submission

Note that you have only one submission. So, make absolutely sure that you submit the correct files with the

correct contents and correct types. No other submission is possible!

Submit the files DEP.java, DataIO.java, Department.java, Employee.java,

Project.java, WorksOn.java, and assignment3Report.pdf through Moodle in the

following way:

(1) Access Moodle at http://moodle.uowplatform.edu.au/

(2) To login use a Login link located in the right upper corner of the Web page or in the middle of the

bottom of the Web page

(3) When logged select a site CSIT213 (S223) Java Programming

(4) Scroll down to a section Assignments and submission

(5) Click on a link Assignment 3 submission

(6) Click on the button Add Submission

(7) Upload a file DEP.java into an area You can drag and drop files here to add

them. You can also use a link Add…

(8) Repeat step (7) for the files DataIO.java, Department.java, Employee.java,

Project.java, WorksOn.java and assignment3Report.pdf.

(9) Click on the checkbox with a text attached: By checking this box, I confirm that

this submission is my own work, … in order to confirm the authorship of your submission

(10) Click on a button Save changes

End of specification