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== Requirements== | == Requirements== | ||
| − | * Write a class '''Message''' that | + | * Write a class '''Message''' (that may be used later 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 the Message objects in a way specific to chat programs: "sender: contents". This must be done | + | ** Allow reading of the sender and content information from the Message objects in a way specific to chat programs: "sender: contents". This must be done using only one method call. Try first with a method of your own. Add another method, that does exactly the same thing but whose signature is ''public String toString()''. |
| − | * Write | + | * Write another class called '''Main''' (the default class created if you created a project within NetBeans), which should contain only the '''main''' method, which instantiates at least three objects of type '''Message''' and then display their formatted string on the screen. |
Notes: | Notes: | ||
| Linia 21: | Linia 21: | ||
Submitting: | Submitting: | ||
| − | * The assignment is submitted attaching the Java source code files exclusively to an e-mail sent to | + | * The assignment is submitted attaching the Java source code files exclusively 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] |
| − | * The body of the e-mail will contain the name | + | * The body of the e-mail will contain the name the student and any additional command you want to make. |
* <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 22:53
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
- Write a class Message (that may be used later 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 the Message objects in a way specific to chat programs: "sender: contents". This must be done using only one method call. Try first with a method of your own. Add another method, that does exactly the same thing but whose signature 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, which instantiates at least three objects of type Message and then display 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.
Submitting:
- The assignment is submitted attaching the Java source code files exclusively to an e-mail sent to arhitectura_procesoarelor@yahoo.com.
- The subject of the e-mail will be [OOP_1]
- The body of the e-mail will contain the name the student and any additional command you want to make.
- Attention Any deviation from these instructions may lead to the loss of the entire amount of points.
