Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Chapter 10.4, Problem 14STQ
Give a statement that will close the stream toFile created for the previous two questions.
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Please make a procedure that takes two parameters and prints a list of students from the first parameter as a student ID to the last parameter which is another student ID. If student is not found, then process an exception NO_DATA_FOUND.
We will use the file classlist.txt. Note that it contains a list of usernames.
3.
Write a script called finduser that is to be called as follows, where classlist is the name of the classlist
file, and username is a particular student's username, either first name or last time.
./finduser classlist username
The script should
check that the correct number of arguments was received and print an error message if not,
check whether the classlist file exists and print an error message if not,
print the line of the given username in the classlist file
If you have not been doing so all along, you should now add some comments to your script and thoroughly
test it!
4.
Write the script into your lab report.
Create a data file with 1,000 lines. Each line in the fileconsists of a faculty member’s first name, last name, rank, and salary. Thefaculty member’s first name and last name for the ith line are FirstNamei andLastNamei. The rank is randomly generated as assistant, associate, and full.The salary is randomly generated as a number with two digits after the decimalpoint. The salary for an assistant professor should be in the range from 50,000to 80,000, for associate professor from 60,000 to 110,000, and for full professorfrom 75,000 to 130,000. Save the file in Salary.txt. Here are some sample data:FirstName1 LastName1 assistant 60055.95FirstName2 LastName2 associate 81112.45. . .FirstName1000 LastName1000 full 92255.21
Chapter 10 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
Ch. 10.1 - Why would anybody write a program that sends its...Ch. 10.1 - When we discuss input, are we referring to data...Ch. 10.1 - What is the difference between a text file and a...Ch. 10.2 - Write some code that will create a stream named...Ch. 10.2 - Prob. 5STQCh. 10.2 - Prob. 6STQCh. 10.2 - Prob. 7STQCh. 10.2 - Write some code that will create a stream named...Ch. 10.2 - Suppose you run a program that writes to the text...Ch. 10.2 - Prob. 10STQ
Ch. 10.3 - Prob. 11STQCh. 10.4 - Write some Java code to create an output stream of...Ch. 10.4 - Give three statements that will write the values...Ch. 10.4 - Give a statement that will close the stream toFile...Ch. 10.4 - What import statement(s) do you use when creating...Ch. 10.4 - Prob. 16STQCh. 10.4 - Give three statements that will read three numbers...Ch. 10.4 - Give a statement that will close the stream...Ch. 10.4 - Can you use writeInt to write a number to a file...Ch. 10.4 - Can you use readUTF to read a string from a text...Ch. 10.4 - Prob. 21STQCh. 10.4 - Prob. 22STQCh. 10.4 - Does the class FileInputStream have a method named...Ch. 10.4 - Does the class FileOutputStream have a constructor...Ch. 10.4 - Does the class ObjectOutputStream have a...Ch. 10.4 - Prob. 26STQCh. 10.4 - Suppose that a binary file contains exactly three...Ch. 10.4 - The following code appears in the program in...Ch. 10.4 - Prob. 29STQCh. 10.5 - Prob. 30STQCh. 10.5 - Prob. 31STQCh. 10.5 - Prob. 32STQCh. 10.5 - Prob. 33STQCh. 10.6 - Prob. 34STQCh. 10.6 - Prob. 35STQCh. 10.6 - Prob. 36STQCh. 10.6 - Prob. 37STQCh. 10 - Write a program that will write the Gettysburg...Ch. 10 - Modify the program in the previous exercise so...Ch. 10 - Write some code that asks the user to enter either...Ch. 10 - Write a program that will record the purchases...Ch. 10 - Modify the class LapTimer, as described in...Ch. 10 - Write a class TelephoneNumber that will hold a...Ch. 10 - Write a class contactInfo to store contact...Ch. 10 - Write a program that reads every line in a text...Ch. 10 - Repeat the previous exercise, but write the new...Ch. 10 - Write a program that will make a copy of a text...Ch. 10 - Suppose you are given a text file that contains...Ch. 10 - Suppose that you have a binary file that contains...Ch. 10 - Suppose that we want to store digitized audio...Ch. 10 - Write a program RecoverSignal that will read the...Ch. 10 - Even though a binary file is not a text file, it...Ch. 10 - Write a program that searches a file of numbers...Ch. 10 - Write a program that reads a file of numbers of...Ch. 10 - The following is an old word puzzle: Name a common...Ch. 10 - The Social Security Administration maintains an...Ch. 10 - The following is a list of scores for a game....Ch. 10 - Write a program that checks a text file for...Ch. 10 - Prob. 5PPCh. 10 - Prob. 6PPCh. 10 - Revise the class Pet, as shown in Listing 6.1 of...Ch. 10 - Write a program that reads records of type Pet...Ch. 10 - Prob. 9PPCh. 10 - Prob. 12PPCh. 10 - Prob. 15PP
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