2. Complete the class code below and using only the main method, add code to make an EXACT COPY of the input file to an output file named copyOf_. For example, if we input the file named story.txt our class will make an exact copy of the file, but save it under the name copyof_story.txt public class CopyFile { public static void main(String[] args) { Scanner console = new Scanner(System.in); System.out.printIn("Enter name of the file to copy\nFileName --> "); // Your code here } } // end of CopyFile class

2. Complete the class code below and using only the main method, add code to make an EXACT COPY of the input file to an output file named copyOf_. For example, if we input the file named story.txt our class will make an exact copy of the file, but save it under the name copyof_story.txt public class CopyFile { public static void main(String[] args) { Scanner console = new Scanner(System.in); System.out.printIn("Enter name of the file to copy\nFileName --> "); // Your code here } } // end of CopyFile class

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

jave programming Suppose a Student class has the following attributesand methods: Student: int id (public), String name(public), double physicsMarks(private), doublechemistryMarks(private), double mathMarks (private),double totalMarks(public) Student(int id, String name, double physics_marks,double chemistry_marks){Assign the variables;} Now, you have to take input from a file named “input.txt”.In the first line of the file, there willbe the total number of students n. After that, therewill be n more lines, each linecontaining a student’s id, name, physicsMarks,chemistryMarksand mathMarks. Youhave to read each student’s information, create studentobjects using these information andstore the student objects in anArrayList. Use BufferedReaderto do this job. Print each student’s information sorted by the descendingorder of total_marks in an “Output.txt''file. Use the Comparator class to sort the ArrayList. Sample input.txt file: 334 rahim 100 20 40 44 karim 50 50 50 12 azim 100 100 55…
09.Write a program that reads in a set of coin descriptions from a file. The input file has the format coinName1 coinValue1 coinName2 coinValue2 ...Add a method void read(Scanner in) throws FileNotFoundException to the Coin class of Section 7.2. Throw an exception if the current line is not properly formatted. Then implement a method static ArrayList<Coin> readFile(String filename) throws FileNotFoundException In the main method, call readFile. If an exception is thrown, give the user a chance to select another file. If you read all coins successfully, print the total value.
SpyEncoder inherits from Spy parent class one public method encode(input_file_name, input_directory, output_directory) for this, we will normally call with input_directory = data and output_directory = encoded This is NOT a static method, you'll need your instance key Your code should read the input file, encode the string, and write to file For encoded file names, use the input_file_name and extension .enc e.g. Reading data/dream.txt will write encoded/dream.txt.enc Return True if successful, False otherwise. Do not let the program crash
Write a program that will read the file text.txt which is provided and the encryptedmessage in there. Please write back the decrypted message into the output.txt file.When you see the message in the output.txt file, you need to submit the java codefile. You need to use Rot13 class for decrypting the message. Do not need to submit in the output.txt file. file example: public class FileExample { public static void main(String[]args){ try {//create file object for input.txtFile in_file = new File("src/input.txt");//create file object for output.txtFile out_file = new File("src/output.txt"); //read the input.txt file with ScannerScanner read = new Scanner(in_file);//write the output.txt file with PrintWriterPrintWriter w = new PrintWriter(out_file); while(read.hasNextLine()){w.write(read.nextLine());} //don't forget to closew.close(); // while(scan.hasNext()){// System.out.println(scan.next());// } }catch(Exception ex){ex.getStackTrace();}
Suppose you have a Person class with the following attributes: Member Variables: int NID, double income, int age, String name Methods: public Person (int NID, double income, int age, String name) { Assign the variables ;} You will read the information about the persons from a text file named "input.txt". In the first line of the file, there will be a number n which will denote the total number of people. Then, you will read a total of n lines from the file, each line containing a person’s information (NID, income, age, name), create a Person object. Then you will store the object in an ArrayList. Print each person's information sorted by the descending order of income in an “output.txt” file. If you find an equal salary then place the person with a smaller name length first. (See the Output below) You have to sort the ArrayList using the Comparator class. Sample input.txt file: 3 1011 10000 34 Rahim 7234 30000 33 Karim 922 10000 30 Ron Sample output.txt file: 7234 30000 33 Karim…
Write a program in Java to perform the following: Using a BufferedReader class and related objects, read a string object consists of 60 words plus some special characters and numbers. Include double space between some words. Include a few $ and % signs in your text. Store that text into a file using proper classes and methods. Call that file fileon.doc which will be your input file then read the contents of that file and perform the following operations using java available methods: Add a new line at the beginning of the text to include your name and the class name (csc 202) Find the length of you text Change the first character of each line to upper case . Find the number and location of all $ sign and re place it with a space. Delete all double spaces Calculate the number of special characters Find the number of lines in your text. Remember each line is terminated by a “.”, find the number of vowel in the last line Count the number of digits in your text. Append a new line consist…
Write a program that reads a text file named as “input.txt” and performs the following operations:1. Write each word in the text file in reverse order to the file named as“output.txt” . (Example: If the text file contains ”Hello World!”, then itshould write to the output file ”olleH dlroW!”)2. Print the number of words.3. Print the number of words starting with a capital letter.4. Print the number of words that contain no characters other than Englishletters.In this challenge you are supposed to:1. Comment every function with a description explaining what it does andhow it does it.2. Research and learn how to read and write into text files by using properlibrary functions in C.In your program, you can assume that1. Both the input file (input.txt) and the output file (output.txt) will beplaced on the same folder as your program’s executable (.exe).2. In the input file, the length of the words will be at most 100.
Hey, this is my code below and I cannot seem to get the import.java.io.*; to create and save information on a txt file. Any help would be great. There is a person class with get and set for firstname, lastname, etc. However I could not fit it in due to space. Code in bold is what I tried for the txt. import java.io.FileNotFoundException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.Scanner; import mainInterface.Interface; public class StaffManager { protected static ArrayList<Staff> Staffs = new ArrayList<Staff>(); public static void main(String[] args) throws FileNotFoundException{ staffManMenu(); //Call writeToFile writeToFile(); } // method to write the staff data to a file titled StaffFile.txt public static void writeToFile() throws FileNotFoundException{ //create object PrintWriter write = new PrintWriter(new File("StaffData.txt")); for(Staff s : Staffs) { write.println("First Name: "…
Now that I understand the classes, I must implement them within a backend file. How would I do this in the following? class FoodWastageTrackerBackend { public: FoodWastageTrackerBackend(const std::string &food_wastage_records_filepath) : food_wastage_records_filepath_{food_wastage_records_filepath} {} // Reads the food wastage records from the file at // food_wastage_records_filepath_, and loads those in memory. If the file is // empty, it is a no-op. Returns true if the file was read successfully, else // returns false. NOTE: This function should be called right after the object // instantiation. // // Example: // FoodWastageTrackerBackend backend{"path/to/some_file_name.JSON"}; // backend.LoadRecordsFromJsonFile(); bool LoadRecordsFromJSONFile(); // Writes the food wastage records from the memory to a JSON file at path // food_wastage_records_filepath_. Returns true if the file was written // successfully, else returns false. bool…
Write a method public static intreadInFile(String line, File file) that returns the position numberof a line in the file filename or −1 if there is no such line or file.We assume that this file contains names of people with a name per line.Names (and hence lines) are listed in ascending alphabetical order in the file.We can not find the same line twice.
Create a java method that reads from a text file and returns/makes a ragged array of doubles. The maximum rows is 10 and the maximum columns for each row is 10. Each row in the file is separated by a new line. Each element in the row is separated by a space. The method signature is such: public static double[][] readFile(File f)
REUPLOAD: I need to fill the program to its designated output I have inserted sample runs and the template of codes that will be used(?) Thank you! I TYPED DOWN THE CODE W/ THE PICTURE ATTACHED: import java. util. Formatter;import java. util. Scanner;public class Chupapi {private static Formatter output;public static void main (String[] args) throws Exception {output = new Formatter("output.txt");Scanner in = new Scanner(System.in);} // This method has one parameter and will return the string with all uppercase characters.public static String toUpperCase(String str) {// This method has one parameter and will return the number of vowels in the string.public static int countVowels(String str) {int numvowels = 0;return numvowels;}// This method has one parameter and Witt return true if the string is o pot indrome,// fotse if the string is not o potindrome.public static boolean isPalindrome(String str){boolean isReversible;return isReversible;}//This method hos three porometers and will…