BIG JAVA: LATE OBJECTS
2nd Edition
ISBN: 9781119626220
Author: Horstmann
Publisher: WILEY
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Chapter 22, Problem 5RE
Program Plan Intro
Socket:
- Sockets include the method of communication using TCP between two computers.
- A socket is an object that encapsulates a TCP/IP connection.
- A client program generates a socket on its end of the communication and tries to connect that socket to a server.
- When the connection is made, the server creates a socket object on its end of the communication.
- The “java.net.Socket” class denotes a socket, and the “java.net.ServerSocket” class offers a
mechanism for the server program to listen for clients and create connections with them. - The steps given below occurs when establishing a connection between two computers with the help of sockets.
- A “ServerSocket” object is instantiated by the server, denoting which port number communication should occur.
- The method “accept()” of the “ServerSocket” class is invoked by the server. This method awaits until a client on the provided port connects to the server.
- A client instantiates a “Socket” object after the server is waiting, specifying the server name and port number to connect to.
- The “Socket” class constructor tries to connect the client to the specified server and to the number of the port. If connection is created, the client will now have a Socket object which can communicate with the server.
- The method “accept()” on the server side returns a reference to a new socket on the server which is connected to the socket of the client.
- After establishing the connections, communication can occur using I/O streams.
Difference between a Socket object and a ServerSocket object:
Socket object | ServerSocket object |
Socket object is the object of class “java.net.Socket”. | ServerSocket object is the object of class “java.net.ServerSocket”. |
Socket object is created by client application. | ServerSocket object is created by server application. |
Socket object is used for establishing connection to the server for services. | “ServerSocket” object is used for listening to the client connections. |
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Assignment Instructions:
You are tasked with developing a program to use city data from an online database and generate a
city details report.
1) Create a new Project in Eclipse called "HW7".
2) Create a class "City.java" in the project and implement the UML diagram shown below and add
comments to your program.
3) The logic for the method "getCityCategory" of City Class is below:
a. If the population of a city is greater than 10000000, then the method returns "MEGA"
b. If the population of a city is greater than 1000000 and less than 10000000, then the
method returns "LARGE"
c. If the population of a city is greater than 100000 and less than 1000000, then the method
returns "MEDIUM"
d. If the population of a city is below 100000, then the method returns "SMALL"
4) You should create another new Java program inside the project. Name the program as
"xxxx_program.java”, where xxxx is your Kean username.
3) Implement the following methods inside the xxxx_program program
The main method…
CPS 2231 - Computer Programming – Spring 2025
City Report Application
-
Due Date:
Concepts: Classes and Objects, Reading from a file and generating report
Point value: 40 points.
The purpose of this project is to give students exposure to object-oriented design and programming
using classes in a realistic application that involves arrays of objects and generating reports.
Assignment Instructions:
You are tasked with developing a program to use city data from an online database and generate a
city details report.
1) Create a new Project in Eclipse called "HW7”.
2) Create a class "City.java" in the project and implement the UML diagram shown below and add
comments to your program.
3) The logic for the method "getCityCategory" of City Class is below:
a. If the population of a city is greater than 10000000, then the method returns "MEGA"
b. If the population of a city is greater than 1000000 and less than 10000000, then the
method returns "LARGE"
c. If the population of a city is greater…
Chapter 22 Solutions
BIG JAVA: LATE OBJECTS
Ch. 22.1 - Prob. 1SCCh. 22.1 - Prob. 2SCCh. 22.2 - Prob. 3SCCh. 22.2 - Prob. 4SCCh. 22.3 - Prob. 5SCCh. 22.3 - Prob. 6SCCh. 22.4 - Prob. 7SCCh. 22.4 - Prob. 8SCCh. 22.5 - Prob. 9SCCh. 22.5 - Prob. 10SC
Ch. 22 - Prob. 1RECh. 22 - Prob. 2RECh. 22 - Prob. 3RECh. 22 - Prob. 4RECh. 22 - Prob. 5RECh. 22 - Prob. 6RECh. 22 - Prob. 7RECh. 22 - Prob. 8RECh. 22 - Prob. 9RECh. 22 - Prob. 10RECh. 22 - Prob. 11RECh. 22 - Prob. 12RECh. 22 - Prob. 13RECh. 22 - Prob. 14RECh. 22 - Prob. 15RECh. 22 - Prob. 16RECh. 22 - Prob. 17RECh. 22 - Prob. 18RECh. 22 - Prob. 1PECh. 22 - Prob. 2PECh. 22 - Prob. 3PECh. 22 - Prob. 4PECh. 22 - Prob. 5PECh. 22 - Prob. 1PPCh. 22 - Prob. 2PPCh. 22 - Prob. 3PPCh. 22 - Prob. 4PP
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