Question 21 Match the Java class with the best description. (This is a one-for- one match where an answer can only match one description.) Used to save entire objects to a file. Used to output binary data to ObjectOutputStream a file. FileOutputStream Print Writer Used to write plain text to a file. [Choose ] [Choose] Scanner Used to read plain text from a file. [Choose ] [Choose ] > >

Question 21 Match the Java class with the best description. (This is a one-for- one match where an answer can only match one description.) Used to save entire objects to a file. Used to output binary data to ObjectOutputStream a file. FileOutputStream Print Writer Used to write plain text to a file. [Choose ] [Choose] Scanner Used to read plain text from a file. [Choose ] [Choose ] > >

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

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4. Fast in java coding please. Thank you File Encryption is the science of writing contents of a file in a secret code. Yourencryption program should work like a filter, reading the content of one file,modifying the data into a code, and then writing the coded contents out to a secondfile. The second file will be a version of the first file, but written in secretcode. Write a program to demonstrate the above working with binary files.
ExampleTwo This program loops through fileLoop.txt, computation, and display results package charioloop; import java.util.Scanner; import java.io.*; // public class Charioloop { public static void main(String[] args) throws IOException { //Create a reference to the physical file File loopfile = new File("fileLoop.txt"); // connect a Scanner to the file Scanner getAll = new Scanner( loopfile ); int num = 0, square = 0; while(num != -1){ num = getAll.nextInt(); square = num * num ; System.out.println("The square of " + num + " is " + square); } getAll.close(); } } /* Create fileLoop.txt in I:\\Ajava\161\WPPractice\IO\charstream\charioloop My fileLoop.txt looks like this: 2 3\ 2 10 -1 Note:- Study this program and follow the given instruction and execute type the code and provide also output for this java program as soon as possible.
Challenge 3: Encryption.java and Decryption.java Write an Encryption class that encrypts the contents of a binary file. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded content out to a second file. The second file will be a version of the first file, but written in a secret code. Use a simple encryption technique, such as reading one character at a time, and add 10 to the character code of each character before it is written to the second file. Come up with your own encryption method. Also write a Decryption class that reads the file produced by the Encryption program. The decryption file will use the method that you used and restore the data to its original state, and write it to a new file.
Question 1BackgroundYou are required to write program that will read a file, encrypt the content of the file, and thencreate a new file that contains the encrypted content.Your program will make use of the following classes:Page – This class will be used to represent the content of the file that was read.PageManager – This class will be used to read page content from and to a file.APM11A1Encryptor – This class will be used to encrypt the content of a file using the Caesar-Ciphermethod.APM11A1 - AdvancedProgrammingAdvancedAPM11A1Encryptor – This class will be used to encrypt the content of a file using theExclusive-OR method.Caesar CipherCaesar was a Roman military and political leader during 100BC to 44BC. In order to make thecommunication channels secure during war, he invented an encryption technique called the CaesarCipher. The cipher requires a sentence and a key to function properly. Each character in the sentencewas then shifted according to the value of the key. Computer…
Write (JAVA) methods for Browser button and Paste button. Browse Button: When user clicks “Browse” Button, a file explorer should open so that user can select an image file. Selected image file must be converted according to the panel_1 size and display on the panel_1 and also file path should be shown on textfield (“txtPath”). Paste Button: When user clicks “Paste” Button, area selected from xmin, xmax, ymin, and ymax textfields will be copied from panel_1 and pasted (or show) in panel_2. Note: Write custom methods if required for your solution.
In Java please. Also, add comments as well. Thank you!
Correct the code: 1. import java.io.File; // Import the File classimport java.io.IOException; // Import the IOException class to handle errorspublic class CreateFile {public static void main(String[] args) {try {File myObj = File("filename.txt");if (myObj.createNewFile() {System.out.println("File created: " + getName());} else {System.out.println("File already exists.");}} catch (IOException) {System.out.println("An error occurred.");}}}Output:File created: filename.txt 2. import java.io.File; // Import the File classimport java.io.FileNotFoundException; // Import this class to handle errorsimport java.util.Scanner; // Import the Scanner class to read text filespublic class ReadFile {public static void main(String[] args) {myObj = new File("filename.txt");Scanner myReader = Scanner(myObj);while (myReader.hasNextLine()) {String data =nextLine();System.out.println(data); 4}myReader.close();catch (e) {System.out.println("An error occurred.");e.printStackTrace();}}}Output:Files in…
Please solve it in java
This is for java. I need help asap. Thanks!
please answer within 30 minutes....
With screen shot for the code and details also algorithm for beginner
Java Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism.Answer completely.You will get up vote for sure.