QUESTION 4: Write/Read the file4A.Write to fileWrite the code to do the following:-Display message to ask then read input from the keyboard about the following information:* studentID (String)studentName (String)* letterGrade (char)Provide the java code to do the following-open output file students.txt to write:-Write to the output file students.txt the following information that have read input from the keyboard in thefollowing format:studentID-studentName-letterGradeFor example:1561163- McKinley White-B-close students.txt file4B-Read from the fileOpen notepad, type the following lines with the file name as input.txt1197785- Mary Lane-A2185779-John Smith-B1557897-James Smith-CProvide the java code to do the following:-open file input.txt to read-Use the loop to read file-Read each line of the file then display on screen-continue reading and displaying on the screen all the lines until end of the file-Write: "End of the file input.txt" on the screen-close input.txt fileQUESTION 5- Use do..while loop to redisplay the menuTHIS CODE IS USED TO MANAGE THE MENU TO REDISPLAY AFTER THE PROGRAM COMPLETES ONE ACTION

4A program import java.util.*;import java.io.FileWriter;import java.io.IOException;class Student{…

QUESTION 4: Write/Read the file 4A.Write to file Write the code to do the following: -Display message to ask then read input from the keyboard about the following information: * studentID (String) * studentName (String) * letterGrade (char) Provide the java code to do the following -open output file students.txt to write: -Write to the output file students.txt the following information that have read input from the keyboard in the following format: studentiD-studentName-letterGrade For example: 1561163- McKinley White-B -close students.txt file 48-Read from the file Open notepad, type the following lines with the file name as input.txt 1197785- Mary Lane-A 2185779-John Smith-B 1557897-James Smith-C Provide the java code to do the following: -open file input.txt to read -Use the loop to read file -Read each line of the file then display on screen -continue reading and displaying on the screen all the lines until end of the file -Write: "End of the file input.txt" on the screen -close input.txt file QUESTION 5-Use do..while loop to redisplay the menu THIS CODE IS USED TO MANAGE THE MENU TO REDISPLAY AFTER THE PROGRAM COMPLETES ONE ACTION

QUESTION 4: Write/Read the file 4A.Write to file Write the code to do the following: -Display message to ask then read input from the keyboard about the following information: * studentID (String) * studentName (String) * letterGrade (char) Provide the java code to do the following -open output file students.txt to write: -Write to the output file students.txt the following information that have read input from the keyboard in the following format: studentiD-studentName-letterGrade For example: 1561163- McKinley White-B -close students.txt file 48-Read from the file Open notepad, type the following lines with the file name as input.txt 1197785- Mary Lane-A 2185779-John Smith-B 1557897-James Smith-C Provide the java code to do the following: -open file input.txt to read -Use the loop to read file -Read each line of the file then display on screen -continue reading and displaying on the screen all the lines until end of the file -Write: "End of the file input.txt" on the screen -close input.txt file QUESTION 5-Use do..while loop to redisplay the menu THIS CODE IS USED TO MANAGE THE MENU TO REDISPLAY AFTER THE PROGRAM COMPLETES ONE ACTION

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter8: I/o Streams And Data Files

Section8.1: I/o File Stream Objects And Functions

Problem 2E: (Practice) a. Write a set of two statements declaring the following objects as ifstream objects, and...

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(Practice) a. Write a set of two statements declaring the following objects as ifstream objects, and then opening them as text input files: inData.txt, prices.txt, coupons.dat, and exper.dat. b. Rewrite the two statements for Exercise 2a, using a single statement.
I have a "user.json" file that looks like this { "something@somewhere.com": "maybe", "john@beatles.uk": "lennonj!", "paul@beatles.uk": "mccartney", "mick@rollingstones.uk": "jaggerm!" } using java script i have to parse this file and then check this email and file conbinations against user input This is the code i m using to parse the file. function lookUpCredentials(filePath, cb) { fs.readFile(filePath, (err, fileData) => { if (err) { return cb && cb(err); } try { const object = JSON.parse(fileData); return cb && cb(null, object); } catch (err) { return cb && cb(err); } }); } lookUpCredentials("./user.json", (err, data) => { if (err) { console.log(err); return; } credentials = data; }); and this is the code i m using to get input from the user app.post('/login', (req, res) => { let username =…
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