OOP Lab Task 2

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
• Coding Conventions
• Advanced Notions About Object Oriented Programming
• Java Application Programming Interface (API) (EN)

Requirements

• Write a class called PrivateMessage which will be used as a data carrier between a chat client and a specific recipient. This class needs to:
  • Store the name of the sender, a message content and the name of the recipient;
  • Be immutable
  • Allow reading of the sender and content information from the Message objects in a way specific to private messages in chat programs: "(priv) sender: contents". This must be done with only one method call.
  • Have a way to read the message recipient from objects of type PrivateMessage.

• In the existing class Main, instantiate at least 3 objects of type PrivateMessage, and print for each one the formatted string and the recipient.

Notes:

• Each class and class member must have one of the three access modifiers public, private or protected.
• The names of the classes must be identical to the ones specified above.
• Use inheritance and overriding.

Submitting:

• The assignment is submitted attaching the Java source code files exclusively to an e-mail sent to radu.hobincu@upb.ro.
• The subject of the e-mail will be [POO_2]
• The body of the e-mail will contain the name and group of 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.