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== Requirements== | == Requirements== | ||
| − | * | + | * Create a Java application project whose name contains your name and group using the format ''group_surname_name'' (use a single name and a single surname). Student John Codebreaker from 421G will create a project named 421G_Codebreaker_John . |
| + | * Add to you project a class '''Message''' (that may be used some time in the future as a data carrier between a chat client and all the other clients connected to a server). This class needs to: | ||
** Store the name of the sender and a message content. | ** Store the name of the sender and a message content. | ||
** Be immutable (once an object of this type is created, its contents can't be changed). | ** Be immutable (once an object of this type is created, its contents can't be changed). | ||
| − | ** Allow reading of the sender and content information from | + | ** Allow reading of the sender and content information from Message objects in a way specific to chat programs: "sender: contents". This must be done using only one method call that returns the formatted string, ready to be displayed by any print method. Try first with a method of your own. Then, add another method, that does exactly the same thing but whose declaration is <span style="font-family:'Lucida Console', monospace">public String toString()</span>. |
| − | * Write another class called '''Main''' (the default class created if you created a project within NetBeans), which should contain only the '''main''' method, | + | * Write another class called '''Main''' (the default class created if you created a project within NetBeans), which should contain only the '''main''' method, that instantiates at least three objects of type '''Message''' and then displays their formatted string on the screen. |
Notes: | Notes: | ||
* Each class and class member must have one of the two access modifiers ''public'' or ''private''. | * Each class and class member must have one of the two access modifiers ''public'' or ''private''. | ||
* The names of the classes must be identical to the ones specified above. | * The names of the classes must be identical to the ones specified above. | ||
| + | * Follow the coding rules stated in Java Coding Conventions. | ||
Submitting: | Submitting: | ||
| − | * The assignment is submitted attaching the Java source code files | + | * The assignment is submitted attaching the Java source code files to an e-mail sent to arhitectura_procesoarelor@yahoo.com |
| − | * The subject of the e-mail will be | + | * The subject of the e-mail will be: OOP_1 |
| − | * | + | * Leave empty the body of the e-mail. |
* <font color="red">'''Attention'''</font> Any deviation from these instructions may lead to the loss of the entire amount of points. | * <font color="red">'''Attention'''</font> Any deviation from these instructions may lead to the loss of the entire amount of points. | ||
Versiunea de la data 20 octombrie 2015 23:40
Required Tutorials
- The Object Oriented Paradigm; Classes and Objects
- Notions About the Java Language
- Writing and Executing a Java Program
- Java Syntax; A Program's Lexical Structure
- Java Coding Conventions
Requirements
- Create a Java application project whose name contains your name and group using the format group_surname_name (use a single name and a single surname). Student John Codebreaker from 421G will create a project named 421G_Codebreaker_John .
- Add to you project a class Message (that may be used some time in the future as a data carrier between a chat client and all the other clients connected to a server). This class needs to:
- Store the name of the sender and a message content.
- Be immutable (once an object of this type is created, its contents can't be changed).
- Allow reading of the sender and content information from Message objects in a way specific to chat programs: "sender: contents". This must be done using only one method call that returns the formatted string, ready to be displayed by any print method. Try first with a method of your own. Then, add another method, that does exactly the same thing but whose declaration is public String toString().
- Write another class called Main (the default class created if you created a project within NetBeans), which should contain only the main method, that instantiates at least three objects of type Message and then displays their formatted string on the screen.
Notes:
- Each class and class member must have one of the two access modifiers public or private.
- The names of the classes must be identical to the ones specified above.
- Follow the coding rules stated in Java Coding Conventions.
Submitting:
- The assignment is submitted attaching the Java source code files to an e-mail sent to arhitectura_procesoarelor@yahoo.com
- The subject of the e-mail will be: OOP_1
- Leave empty the body of the e-mail.
- Attention Any deviation from these instructions may lead to the loss of the entire amount of points.
