Instructor Solutions Manual For Introduction To Java Programming And Data Structures, Comprehensive Version, 11th Edition
11th Edition
ISBN: 9780134671581
Author: Liang
Publisher: PEARSON
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Textbook Question
Chapter 17.4, Problem 17.4.9CP
How do you check the end of a file in an input stream (FileInputStream, DataInputStream)?
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First study the attached code for a simple internet ping server (UDP_Ping_Server.py). You will have to
implement a corresponding client in python. The functionality provided by these programs will be similar
to the functionality provided by standard ping programs available in modern operating systems.
However, these programs will use a simpler protocol, UDP, rather than the standard Internet Control
1Message Protocol (ICMP) to communicate with each other. The ping protocol allows a client machine
to send a packet of data to a remote machine, and have the remote machine return the data back to the
client unchanged (an action referred to as echoing). Among other uses, the ping protocol allows hosts to
determine round-trip times to other machines.
Do not modify the attached server code. In this server code, 30% of the client’s packets are simulated to
be lost. The server sits in an infinite loop listening for incoming UDP packets. When a packet comes in
and if a randomized integer is…
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# We will need the following module to generate randomized lost packets
import random
from socket import *
# Create a UDP socket
# Notice the use of SOCK_DGRAM for UDP packets
serverSocket = socket (AF_INET, SOCK_DGRAM)
# Assign IP address and port number to socket
serverSocket.bind(('', 12000))
while True:
# Generate random number in the range of 0 to 10
rand = random.randint(0, 10)
# Receive the client packet along with the address it is coming from
message, address = serverSocket.recvfrom (1024)
# Capitalize the message from the client
message = message.upper()
# If rand is less is than 4, we consider the packet lost and do not respond
if rand < 4:
continue
# Otherwise, the server responds
serverSocket.sendto (message, address)
Reading Chapters 7-8 of Ralph Stair's "Fundamentals of
Information Systems" 9th Edition:
Chapter 7: Discussion questions: 4. How could you use a
community of practice (COP) to help you in your work or
studies? How would you go about identifying who to invite to
join the CoP?
Chapter 8: Discussion questions: 2. Thoroughly discuss the
pros and cons of buying versus building software.
Chapter 17 Solutions
Instructor Solutions Manual For Introduction To Java Programming And Data Structures, Comprehensive Version, 11th Edition
Ch. 17.2 - What is a text file and what is a binary file? Can...Ch. 17.2 - How do you read or write text data in Java? What...Ch. 17.3 - Prob. 17.3.1CPCh. 17.3 - How is a Java character represented in the memory,...Ch. 17.3 - If you write the string ABC to an ASCII text file,...Ch. 17.3 - If you write the string 100 to an ASCII text file,...Ch. 17.3 - What is the encoding scheme for representing a...Ch. 17.4 - Prob. 17.4.1CPCh. 17.4 - Why should you always close streams? How do you...Ch. 17.4 - Prob. 17.4.3CP
Ch. 17.4 - Does FileInputStream/Fi1eOutputStream introduce...Ch. 17.4 - What will happen if you attempt to create an input...Ch. 17.4 - How do you append data to an existing text file...Ch. 17.4 - Prob. 17.4.7CPCh. 17.4 - What is written to a file using writeByte(91) on a...Ch. 17.4 - How do you check the end of a file in an input...Ch. 17.4 - What is wrong in the following code? Import...Ch. 17.4 - Suppose you run the following program on Windows...Ch. 17.4 - After the following program is finished, how many...Ch. 17.4 - For each of the following statements on a...Ch. 17.4 - What are the advantages of using buffered streams?...Ch. 17.5 - How does the program check if a file already...Ch. 17.5 - How does the program detect the end of the file...Ch. 17.5 - How does the program count the number of bytes...Ch. 17.6 - Prob. 17.6.1CPCh. 17.6 - Prob. 17.6.2CPCh. 17.6 - Is it true that any instance of...Ch. 17.6 - Prob. 17.6.4CPCh. 17.6 - Prob. 17.6.5CPCh. 17.6 - What will happen when you attempt to run the...Ch. 17.7 - Can RandomAccessFi1e streams read and write a data...Ch. 17.7 - Create a RandomAccessFi1e stream for the file...Ch. 17.7 - What happens if the file test.dat does not exist...Ch. 17 - (Create a text file) Write a program to create a...Ch. 17 - (Create a binary data file) Write a program to...Ch. 17 - (Sum all the integers in a binary data file)...Ch. 17 - (Convert a text file into UTF) Write a program...Ch. 17 - Prob. 17.5PECh. 17 - Prob. 17.6PECh. 17 - Prob. 17.7PECh. 17 - (Update count) Suppose that you wish to track how...Ch. 17 - (Address book) Write a program that stores,...Ch. 17 - (Split files) Suppose you want to back up a huge...Ch. 17 - (Split files GUI) Rewrite Exercise 17.10 with a...Ch. 17 - Prob. 17.12PECh. 17 - (Combine files GUI) Rewrite Exercise 17.12 with a...Ch. 17 - (Encrypt files) Encode the file by adding 5 to...Ch. 17 - (Decrypt files) Suppose a file is encrypted using...Ch. 17 - (Frequency of characters) Write a program that...Ch. 17 - (BitOutputStream) Implement a class named...Ch. 17 - (View bits) Write the following method that...Ch. 17 - (View hex) Write a program that prompts the user...Ch. 17 - (Hex editor) Write a GUI application that lets the...
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