Write a java code that does the following: Opens a file named NumberList.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file and displays them, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file, calculate the sum of these numbers and displays their total. Opens a file named NumberList.txt for writing, but does not erase the contents of the file if it already exists.

Write a java code that does the following: Opens a file named NumberList.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file and displays them, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file, calculate the sum of these numbers and displays their total. Opens a file named NumberList.txt for writing, but does not erase the contents of the file if it already exists.

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter6: Looping

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Write code that does the following: Opens a file named NumberList.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file and displays them, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file, calculate the sum of these numbers and displays their total. Opens a file named NumberList.txt for writing, but does not erase the contents of the file if it already exists.
GameAA.java This program allows a user to play “Rock, paper, scissors” against the computer. Use a random number generator to generate the computer’s selection. Your code should ask the user what they choose and then report the computer’s choice and who wins. This code should run in a loop and should end when the user chooses to end. (Make sure your random number generator chooses a new number each time the loop runs.) ALSO, your code should keep track of the number of times you win, the number of times you lose, and the number of ties. When the user exits, these statistics should be displayed. (Consider using a different counter variable to keep track of each value.) Make sure your code accounts for inputs that are out of the acceptable range. For example, if you ask the user to type 0 to end, 1 for Rock, 2 for Paper, and 3 for Scissors, your code should tell the user that they entered an invalid choice if they select 4. (You do not have to account for users who crash the…
OWrite a program that reads data from a file containing integers that ends with -999. Output the numbers that are divisible by 7 Output the numbers that are divisible by 11 Output the numbers that are not divisible by 7 or 11.
1. Write a java program that asks the user for a positive nonzero integer value. The program should use a loop to get the sum of all the integers from 1 up to the number entered. For example, if the user enters 50, the loop will find the sum of 1, 2, 3, 4, . . . 50. Filename: SumLoop.java
JAVA PPROGRAM Write a program that prompts the user to enter a file name, then opens the file in text mode and reads names. The file contains one name on each line. The program then compares each name with the name that is at the end of the file in a symmetrical position. For example if the file contains 10 names, the name #1 is compared with name #10, name #2 is compared with name #9, and so on. If you find matches you should print the name and the line numbers where the match was found. While entering the file name, the program should allow the user to type quit to exit the program. If the file with a given name does not exist, then display a message and allow the user to re-enter the file name. The file may contain up to 100 names. You can use an array or ArrayList object of your choosing, however you can only have one array or ArrayList. Input validation: a) If the file does not exist, then you should display a message "File 'somefile.txt' is not found." and allow the…
Virus DNA files As a future doctor, Jojo works in a laboratory that analyzes viral DNA. Due to the pandemic During the virus outbreak, Jojo received many requests to analyze whether there was any viral DNA in the patient. This number of requests made Jojo's job even more difficult. Therefore, Jojo ask Lili who is a programmer for help to make a program that can read the file containing the patient's DNA data and viral DNA and then match them. If on the patient's DNA found the exact same string pattern, then write to the index screen the found DNA. Data contained in the file testdata.in Input Format The first line of input is the number of test cases TThe second row and so on as many as T rows are the S1 string of patient DNA and the S2 string of viral DNA separated by spaces Output Format The array index found the same string pattern. Constraints 1 ≤ T ≤ 1003 ≤ |S2| ≤ |S1| ≤ 100|S| is the length of the string.S will only consist of lowercase letters [a-z] Sample Input (testdata.in)…
12 Digit Barcode In this homework, you will develop a python program which reads a series of barcodes from "barcodes.txt" and creates an output file "output.txt" which contains the barcodes and their status as seen in the example output below. 153182953420 5+1+2.5.4-1 7+3+8+4+3+2-3 1 23601057072 6+t-13 Even : 2+6+1 +5+0 = 14 Odd: 1+3+0+ 0 +7+7 = 18 3 x8 = 24 D+3- 10 4 + 4 = 8 10 -8 = 2 (CORRECT) What to submit: 1) ipynb file which contains checkBarcode function which takes a string varlable as input and returns true or false, and a driver program which reads in "barcodes.txt" and creates "output.txt". Assume the input file contains one barcode info per line. Important: Your input file name MUST BE "barcodes.txt" and the output file name MUST BE "output.txt". Otherwise, you'l get up to 30 pts penalty Below a sample output.txt: 123601057072 is a valid 10-digits barcode lab601057072 is an invalid 10-digits barcode 172601055072 is an invalid 10-digits barcode 12345 is an invalid 10-digits…
Using a Sentinel Value to Control a while Loop Summary In this lab, you write a while loop that uses a sentinel value to control a loop in a Java program that has been provided. You also write the statements that make up the body of the loop. The source code file already contains the necessary variable declarations and output statements. Each theater patron enters a value from 0 to 4 indicating the number of stars the patron awards to the Guide’s featured movie of the week. The program executes continuously until the theater manager enters a negative number to quit. At the end of the program, you should display the average star rating for the movie. Instructions Ensure the file named MovieGuide.java is open. Write the while loop using a sentinel value to control the loop, and write the statements that make up the body of the loop to calculate the average star rating. Execute the program by clicking Run. Input the following: 0, 3, 4, 4, 1, 1, 2, -1 Check that the average…
Java Write an application that allows a user to enter the names and birthdates of up to 10 friends. Continue to prompt the user for names and birthdates until the user enters the sentinel value ZZZ for a name or has entered 10 names, whichever comes first. When the user is finished entering names, produce a count of how many names were entered, and then display the names. In a loop, continuously ask the user to type one of the names and display the corresponding birthdate or "Sorry, no entry for name" if the name has not been previously entered. The loop continues until the user enters ZZZ for a name.
Python please: Given a text file named RandomTextFile.txt that contains newline characters, write a program that removes all the newline characters from the file. Your program should use the filename as input, and the output file should use the same filename as the original. Use the attached file RandomTextFile.txt to help you write and test your program. It contains the following text: Python is an interpreted language and the python interpreter is a computer program that executes code written in the python programming language. The python interactive interpreter is useful for simple operations or programs consisting of only a few lines. For more lines, a programmer can write Python code in a file, and then provide that file to the interpreter. For normal development a programmer installs python as an application on a local computer. Macintosh and Linux operating systems usually include python, while Windows does not. Programmers can download the latest version of python for free from…
Python A Personal Fitness Tracker is a wearable device that tracks your physical activity, calories burned, heart rate, sleeping patterns, and so on. One common physical activity that most ofthese devices track is the number of steps you take each day The steps.txt file contains the number of steps a person has taken each day for a year. There are 365 lines in the file, and each line contains the number of steps taken during a day. Write a program that reads the file, then displays the average number of steps taken for each month Your program should use a function to calculatethe averagenumber of steps. You will need to pass more than one argument to the function.
JAVA INTRO The answer last time was incorrect It did not use text files!!!!. Create a program that generates a report that displays a list of students, classes they are enrolled in and the professor who teaches the class. There are 3 files that provide the input data: 1. FinalRoster.txt List of students and professors ( The first value of each row indicates if it is a student or professor; S means a student , P means a professor) Student and Professor have different data Student row: "S",Student Name, StudentID Professor row: "P", Professor Name, Professor ID, Highest Education 2. FinalClassList.txt List of classes and professor who teach them Each row contains the following information: ClassID, ClassName, ID of Professor who teach that class The professor ID in this file matches the Professor ID in FinalRoster.txt. 3. FinalStudentClassList.txt List of classes the students are enrolled in. (StudentID, ClassID) Student ID matches Student ID in FinalRoster.txt and ClassID…