
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question

Transcribed Image Text:Suppose you have written JavaScript code to store a FileReader object in the myReader variable. How can you
trigger an anonymous function to execute only when myReader has successfully completed reading the entire file
myFile?
myFile.onread = function(){
commands
}
myReader.onload = function(){
commands
}
myReader.onloadend = function() {
commands
myFile.onsuccess
function () {
commands
}
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps

Knowledge Booster
Similar questions
- You will develop a client side and a Servlet program that will work with a database. 1. The client (front end) should have a title "NJIT Credit Union", centered. 2. The client should have a background color. 3. The client should have a text field with label 'UserID' where user will enter userID (integer) and a Submit button with text "Submit". 4. An unsuccessful authentication should have a message printed on the screen, in red, stating that "Your authentication has failed, please try again.” (no pop up message). At this point the text field should get cleared and ready to accept a new input. Your program should not exit. 5. A successful authentication should be followed by a message on the screen, in green, stating that "Your authentication is successful" (no pop up message). 6. There should be two other text boxes with label "Deposit" and "Withdraw" where user will enter an amount (you should accommodate for decimals). These two text boxes should only be enabled after successful…arrow_forwardA client with a completed main function is provided. The main function should not be modified. You must update the client by creating and implementing the various functions described below. readFile – Loads the parameter array with Billionaire objects. The data for each Billionaire is read from the given data file which is in CSV format (comma delimited - 1 line per record with fields separated by a comma.) The function should read each line from the file, pass the line read to the Billionaire class constructor and store the resulting object in the parameter array. The second parameter represents the maximum number of Billionaire objects that can be stored. displayAll - Displays a list of the Billionaires stored in the array. getRange – Determines the smallest wealth value and the largest wealth value within the array. These values are returned to the caller via reference parameters. getWealthiest – Returns the Billionaire within the array with the greatest wealth. getUS –…arrow_forwardA miniature robot designed to mimic the behavior of an ant is being tested to evaluate the robot’s ability to avoid a chemical repellant (the robot has a chemical sensor, and a control loop that makes the robot avoid moving in a direction that will result in the sensor detecting a chemical concentration above a certain limit). The x and y positions of the robot are measured with time, and the resulting data is saved to a file called data.txt which contains 3 columns: the time of the measurement (in seconds), the x position (in cm), and the y position (in cm). The first line of the file is a “header”: it has a single integer that specifies how many lines of data follow. Write a C++ program called ant.cpp that reads files of this type (i.e., your program should work with another, but similar, file!) and then does the following: it asks for an X and Y position, and then prints to screen the time at which the ant robot was closest to this position. For example, if we wish to know when the…arrow_forward
- A file was created under the /home/newsletters/ folder named today.log. Assume that we have a File object named testFile pointed to the file. Which segment of code will output: /home/newsletters/today.log O O O System.out.println(testFile.getPath()); System.out.println(testFile.getName()); System.out.println(testFile); 1 19°F Partly cloudy Q Searcharrow_forwardIt is not apparent what the results of executing a software that contains an error would be. What steps should be taken next after developing the code for the frmProgram? Can the event method for the command button be demonstrated? The sentence "Unload Me" serves a function, but what exactly is that function? What exactly is the function of a file that may be run?arrow_forwardWhat is the difference between using +/- versus = when setting file permissions? Is there any benefit of using = instead of +/- too set permissions?arrow_forward
- A myfile.txt has the following lines of text, with each line of text having a new line after it: one two Given the following snippet of code: File output = new File("myfile.txt"); try { Files.writeString(output.toPath(), "three\n", StandardOpenOption StandardOpenOption.APPEND); } catch (IOException ex) { System.out.println("Error: } + ex.getMessage()); What would the myfile.txt contain after the code is run? 7°F Partly sunny Q Searcharrow_forwardI would like to open a data file in Java for Exercise 6 in Chapter 4 of JAVA by Gaddis & Muganda. The file properties shows in Explorer the location as C: \Users\Vladi\Desktop. The Files is Exercise0406.txt. I inserted the lineFile file = new File(“C:\Users\Vladi\Desktop\Exercise0406.txt”);I get Exception cannot find file.arrow_forwardSuppose you have a file Monster.txt that lists the Monster Energy Drinks the company offers, on one line and the price for a case of 24, with the customer ratings on a scale of 1-5 on the second line. The following shows the first few lines of the file: Monster Energy Nitro Super Dry Maximum Strength Drink 39.99 4.5 Monster Energy Ultra Red, Sugar Free Energy Drink 39.99 5 Red Bull Energy Drink, Zero 92.23 4.5 Red Bull Energy Drink, Coconut Berry 41.18 5 Monster Energy Juice, Pipeline Punch 34.98 5 Red Bull Energy Drink, Coconut Berry 41.18 5 The first line means the drink name is: Monster Energy Nitro Super Dry Maximum Strength and the second line means that a case of 24 cost $39.99 and it was rated 4.5/5. NOTE: WE DO NOT KNOW HOW MANY LINES THERE ARE IN THE FILE. Write the C++ program (with comments) that reads the data from the file, lists only those drinks rated 5 stars, and indicates if the five star drink comes with a free six pack or not.The customer gets a free six…arrow_forward
- When I run this code i get an error that says. Traceback (most recent call last):File "C:\Users\ept20\OneDrive\Desktop\student_file1.py", line 49, in <module>stu_info.add_students(name, number, email)AttributeError: 'Studentinfo' object has no attribute 'add_students' import pathlib class Studentinfo:def __init__(self):self.student_list = [] def save_students(self):"""Saving the information to the record file"""record_file = pathlib.Path("c://users//ept20//onedrive//Desktop//student_file.txt")with record_file.open(mode='a', encoding='utf-8') as file:for info in self.student_list:name, number, email = infofile.write(f'{name},{number},{email}\n') def add_students(self,name,number,email):"""Add a student to the student list"""student_info = (name, number, email)self.student_list.append(student_info) class Student:def __init__(self, name, number, email):self.name = nameself.number = numberself.email = emailprint(f'A new student object: {self.name} is created')def…arrow_forwardImplement a simple version of the linux grep command in C++. grep - Looks through a file, line by line, trying to find a user-specified search term in the line. If a line has the word within it, the line is printed out, otherwise it is not. Use the system calls open(), getline(), close(). Requirements (examples run from. terminal) Your program grep is always passed a search term and zero or more files to grep through (thus, more than one is possible). It should go through each line and see if the search term is in it; if so, the line should be printed, and if not, the line should be skipped. [terminal]$ ./grep ! main.cpp main2.cppcout << "Hello, World!";cout << "Programming is great fun!"; The matching is case sensitive. Thus, if searching for world, lines with World will not match. Lines can be arbitrarily long (that is, you may see many many characters before you encounter a newline character, \n). grep should work as expected even with very long lines. For this,…arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSONComputer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier ScienceNetwork+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning
- Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage LearningPrelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson EducationSc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY

Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON

Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning

Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning

Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education

Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY