Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 10, Problem 8PP
Write a program that reads records of type Pet from a file created by the program described in the previous
Revise the class Pet, as shown in Listing 6.1 of Chapter 6, so that it is serializable, Write a program that allows you to write and read objects of type Pet to a file. The program should ask the user whether to write to a file or read from a file. In either case, the program next asks for the file name. A user who has asked to write to a file can enter as many records as desired. A user who has asked to read from a file is shown all of the records in the file. Be sure that the records do not scroll by so quickly that the user cannot read them (Hint: Think of a way to pause the program after a certain number of lines are displayed.)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
In Java
A comma separated value (.csv) file has been included to be used for this program. Each line contains two values, a name and a number separated by a comma (except the first line, which contains the titles for the value types). The name is that of a writer and the number refers to the number of works the writer has written. Ex. Jane Austen,6. Each line is an entry and each entry number can be updated by identifying the associated name.
Once complete, the following program opens data file allWorks.csv and asks if the user wants to update entries or add new entries. All entries are stored in an array while being read in and updated. The program then writes the array to the file, overwriting the original contents. The following TODO sections must be completed.
Open allWorks.csv for reading/input.
Locate an entry to be updated by name (use the Java String indexOf() method)
Add a new entry if the name isn't found in the file (give the entry a new number)
Open file allWorks.csv for…
Do the following program in Java Eclipse:A veterinarian services many pets and their owners. As new pets are added to the population of pets being serviced, their information is entered into a flat text file. Each month, the vet requests a listing of all pets sorted by their outstanding bill balance. You have to write a program to produce a report of animals and their owners sorted by theiroutstanding bill balances from the data in the flat text file. Below is a description of the information on the text file:• The first entry is the number of animals on the file (numeric)• The fields below repeat for each animal:o Owner name (String)o Birth year (numeric)o Bill balance (numeric)o Species (String)o Special feature (numeric or String)The animals serviced by the veterinarian are of four types: mammals, fish, birds, and reptiles.For a mammal, the special feature field on the flat file is the number of legs of the animal (numeric).For a fish, the special feature field is the type, bony,…
The objective of this problem is to show that you can write a program that reads a text file and uses string methods to
manipulate the text.
File cart.txt contains shopping cart type data from golfsmith.com representing the gifts you have purchased for your
dad for this past Fathers Day. Good for you. You have been very generous!
The first item in each row of the file is the part number, the second the quantity, the third the price and the fourth the
description.
Your program will read the file line by line and compute the total cost of all of the items in the list. You will then
display a message that looks like this, assuming the cost of each item adds up to 168.42:
Here's what your output should look like:
The total price for the awesome Fathers Day gifts you bought is $168.42.
The shopping cart can be found here: cart.txt. Right click on the link and save the file to the folder
where you have your Python files.
Chapter 10 Solutions
Java: An Introduction to Problem Solving and Programming (8th 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 - 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. 12PP
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Which of the following activities require real-time processing? a. Printing mailing labels b. Playing a compute...
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
A(n) _____ is a named storage location.
Starting Out with C++: Early Objects (9th Edition)
What is pseudocode?
Starting Out With Visual Basic (8th Edition)
a. Give an example of a situation in which an instance variable should be private. b. Give an example of a situ...
Computer Science: An Overview (12th Edition)
For each of the following activities, give a PEAS description of the task environment and characterize it in te...
Artificial Intelligence: A Modern Approach
The keywordindicates that a method does not return a value.
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- In this assignment, you will create a Java program to read undergraduate and graduate students from an input file, sort them, and write them to an output file. This assignment is a follow up of assignment 5. Like assignment 5, your program will read from an input file and write to an output file. The input file name and the output file name are passed in as the first and second arguments at command line, respectively. Unlike assignment 5, the Student objects are sorted before they are written to the output file. • The program must implement a main class, three student classes (Student, UndergradStudent, GradStudent), and a Comparator class called StudentIDComparator. • The StudentIDComparator class must implement the java.util.Comparator interface, and override the compare() method. Since the Comparator interface is a generic interface, you must specify Student as the type parameter when defining the StudentIDComparator class, i.e., public class StudentIDComparator implements…arrow_forwardWrite a program for the following problem. You're given a file that contains a collection of IDs and scores (type int) for an exam in your computer course. You're to compute the average of these scores and assign grades to each student according to the following rule: If a student's score is within 10 points (above or below) of the average, assign a grade of satisfactory. If a student's score is more than 10 points above average, assign a grade of outstanding. If a student's score is more than 10 points below average, assign a grade of unsatisfactory. The output from your program should consist of a labeled three-column list that shows each ID, score, and corresponding grade. As part of the solution, your program should include functions that correspond to the function prototypes that follow. 7/ reads exam scores into array Scores void readStuData (ifstream &rss, int scores[], // IN: data file // OUT: the scores Oum, the TDsarrow_forwardWrite a C++ program which takes multiple Employees information (records) as inputs from the user and save them on a file using class. Writing in file should be done using setters. Perform following operations on the data saved in the file:• Read data from file• Search an employee’s information in the file• Count the number of employees having salary more than 50,000. (PLEASE USE CLASSES)arrow_forward
- 2. Python use numpy instead of list to solve this problem. a. Write a class with name EmployeeInfo that will keep track of employees name, salary, post, and joining year. Create a text file with information of five employees of a company. Each row in the file should contain four columns. Read this file with python and using the EmployeeInfo class, find out the employee with highest salary and also find out the employee with longer time with company. b. Using the EmployeeInfo class and the same file, sort the employees in ascending order of salary using list’s functions.arrow_forwardWrite a program for the following problem. You're given a file that contains a collection of IDs and scores (type int) for an exam in your computer course. You're to compute the average of these scores and assign grades to each student according to the following rule: If a student's score is within 10 points (above or below) of the average, assign a grade of satisfactory. If a student's score is more than 10 points above average, assign a grade of outstanding. If a student's score is more than 10 points below average, assign a grade of unsatisfactory. The output from your program should consist of a labeled three-column list that shows each ID, score, and corresponding grade. As part of the solution, your program should include functions that correspond to the function prototypes that follow. // reads exam scores into array scores void readStuData (ifstream &rss, int scores[], // IN: data file // OUT: the scores // OUT: the IDs // OUT: Number of students read // OUT: A flag to indicate…arrow_forwardWrite a C++ program using classes that readslines from a file until the end of file. The program should prompt the user for the file name to read from. The program should open the file for reading, and if the filecannot be opened, print the message “File couldn’t be opened”, followed by a space and the filename, and exit. The program should keep track of the number of lines, the number of non-blank lines, the number of words, and the number of integers read from the file.arrow_forward
- Create a class employee with the data members such as name, id and total salary.create a file as "employee_data" as binary file and write the information of four employees to that file. open that file in reading mode and only display the record of 2nd and 3rd employees.By c++ language.arrow_forwardLanguage:Java TR ID numbers of students receiving scholarships from the governorship and students receiving scholarships from themunicipality in a province are kept in two separate files (“governer.txt“ and “municipal.txt”). Write a program that comparesthese two files, identifies students who receive scholarships from both institutions at the same time, and saves their namesand surnames in the "common.txt" file.arrow_forwardJava Your program must read a file called personin.txt. Each line of the file will be a person's name, the time they arrived at the professor's office, and the amount of time they want to meet with the professor. These entries will be sorted by the time the person arrived. Your program must then print out a schedule for the day, printing each person's arrival, and printing when each person goes in to meet with the professor. You need to print the events in order of the time they happen. In other words, your output will be sorted by the arrival times and the times the person goes into the professor's office. In your output you need to print out a schedule. In the schedule, new students go to the end of the line. Whenever the professor is free, the professor will either meet with the first person in line, or meet with the first person in line if nobody is waiting. Assume no two people arrive at the same time. You should solve this problem using a stack and a queue. You can only…arrow_forward
- Write a program that creates a list of 10 cars. Each car has the following information: Registration No Model: e.g., 2010 Made: e.g., GLI Purchase Price Also, create functions to delete and modify a car.arrow_forwardWrite a Python program that creates a class which represents an Employee in an organization. The class includes a function that reads a text file called employee_details.txt (A sample of the file is provided below) Each row in the file corresponds to employee id, employee name, number of years employed and salary. Also include the following functions to process the content read from the file. a. getData(): This method reads the data from a file and stores the data as a list. b. totalSalary(): This method calculates the total salary for each employee. The method should add an incentive of 3% to the total salary if the number of years worked by the employee is greater than 4 years. c. whoishighestTotalSalary() and whoislowestTotalSalary(): These methods calculate the highest and lowest total salary and display the respective employee names. d. sortEmployeeBySalary(): Sort the employee list in the ascending order of their salaries. e. AverageSalary(): calculate the average of their…arrow_forwardWrite a program that creates a list of 10 cars. Each car has the following information:1. Registration No2. Model: e.g., 20103. Made: e.g., GLI4. Purchase PriceAlso, create functions to delete and modify a car.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Constants, Variables, Data types, Keywords in C Programming Language Tutorial; Author: LearningLad;https://www.youtube.com/watch?v=d7tdL-ZEWdE;License: Standard YouTube License, CC-BY