OOP Lab Task 5

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Required Tutorials

Requirements

  1. Implement a class called ClientPeer with the following characteristics:
    • The class constructor takes as arguments a String (the user/sender name) and a reference to a pre-initialized Socket.
    • The class implements two methods:
      • void sendMessage(String message) - creates a Message object and serializes it, utilising the available Socket.
      • void sendMessage(String message, String receiver) - creates a PrivateMessage object and serializes it, utilising the available Socket.
  2. Implement a class called TextClient, which is executable (has a main method), with the following characteristics:
    • The main method opens a Socket on the localhost (127.0.0.1) on port 9000
    • While the socket connection is active, read strings of characters from the keyboard (utilizing the Console class - see System.console()) and call the sendMessage methods specified above (Note: You may choose any formatting to identify a private message, but please describe this format in the homework submission e-mail; one example is /w John Hello! which identifies a private message to user John, with the content "Hello!").
  3. Implement a class called ServerPeer with the following characteristics:
    • The class constructor takes as argument a reference to a pre-initialized Socket.
    • While the socket connection is active, it deserializes objects of type Message and prints their formatted contents to the screen.
  4. Implement a class called Server, which is executable (has a main method), with the following characteristics:
    • The main method must utilize an object of type ServerConfig to read a port number from a configuration file
    • Utilizing the identified port number, opens a ServerSocket and listens to connections,
    • Once a client is connected, creates a ServerPeer object, which utilizing the Socket obtained from the ServerSocket, reads objects from the stream, according to point 3 above.
  5. Modify the Message and PrivateMessage classes such that they are serializable.