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Q: What is flowchart in software development?
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- Java OOP Write a complete address book maintenance application. The user of the program has four options: Add a new person, delete a person, modify the data of a person, and search for a person by giving the name. Use the AddressBook class, either the original one from the chapter or the modified one from the previous exercises. You have to decide how to allow the user to enter the values for a new person, display person information, and so forth.The file Names.txt is located in the folder input_files within your project. The content of that file is shown in the following figure Java: import java.io.FileInputStream;import java.io.FileNotFoundException;import java.util.ArrayList;import java.util.Scanner;public class Question2 {public static void main(String[] args) throws FileNotFoundException {/*** Part a* Finish creating an ArrayList called NameList that stores the names in the file Names.txt.*/ArrayList<String> NameList;/*** Part b* Replace null on the right-hand-side of the declaration of the FileInputStream object named inputStream* so that it is initialized correctly to the Names.txt file located in the folder specified in the question description*/FileInputStream inputStream = null;Scanner scnr = new Scanner(inputStream); //Do not modify this line of code/*** Part c* Using a loop and the Scanner object provided, read the names from Names.txt* and store them in NameList created in Part a.*//*** Part d* Reorder the…Computer Science Write a program in the Java language that includes: 1. A class for books, taking into account the encapsulation and getter, setter. 2. Entering books by the user using Scanner 3. LinkedList class for: (Adding a new book - Inserting a book- Searching for a book using the ISBN Number - Viewing all books,delete book). 4. Serial number increases automatically with each book that is entered. 5. Printing the names of books is as follows: Serial - ISBN - Name - PubYear - Price - Notes. 6-Design a main menu that includes: • Add Book • Insert Book • Delete Book • Search . Display . Exit
- Please DO NOT respond to this question by copy/pasting the code provided elsewhere on the site, none of those work. Thanks. Virtual Memory Lab This lab project addresses the implementation of page-replacement algorithms in a demand-paging system. Each process in a demand-paging system has a page table that contains a list of entries. For each logical page of the process, there is an entry in the table that indicates if the page is in memory. If the page is in memory, the memory frame number that page is resident in is indicated. Also, for each page, the time at which the page has arrived in memory, the time at which it has been last referenced, and the number of times the page has been referenced since the page arrived in memory are maintained. The page table data structure is a simple array of page-table entries (PTEs). Each PTE contains five fields as defined below: struct PTE { int is_valid; int frame_number; int arrival_timestamp; int…Develop a program that will do the following using Java and Javaclasses of Filewriter and Arraylist: The program has the interface[A] Add[D] Delete[U] Update[S] Search[X] Exit Select Operation: A You are about to add a user. Enter the First name:Enter the Last name:Enter the username:Enter password: The user has been successfully added. Do you wish to do another operation? [Y/N]: Y ---------------------------------------------------------------------------------------------- [A] Add[U] Update[S] Search[D] Delete[X] Exit Select Operation: U You are about to update user information. Search ID: 3 User information:First name: GeraldLast name: MorenoUsername: igeraldPassword: egerald Enter new username: asxsEnter new password: erdasdfr Username and Password have been updated successfully. Do you wish to do another operation? [Y/N]: Y ---------------------------------------------------------------------------------------------------------- [A] Add[U] Update[S] Search[D] Delete[X] Exit Select…Turtle Hare Race - Multithreading Use Java multithreading to implement the turtle hare race program. You are not allowed to use Timer events. Your program should have one thread for turtle, one thread for hare, and one dedicated thread for periodic painting.
- package filterSort;import java.io.File;import java.io.FileNotFoundException;import java.util.Arrays;import java.util.Scanner;import java.util.*; public class FilterSort { /*** Allocates and returns an integer array twice the size of the one* supplied as a parameter. The first half of the new array will* be a copy of the supplied array and the second half of the new* array will be zeros.** @param arr the array to be copied* @return array twice the size of <tt>arr</tt> with its initial* elements copied from <tt>arr</tt>* @throws NullPointerException if <tt>arr</tt> is null.*/public static int[] doubleArrayAndCopy(int[] arr) {int len = arr.length;int max = arr.length * 2;int[] copyArr = Arrays.copyOf(arr,max);int length = copyArr.length-1;Arrays.sort(copyArr, 0, length);return copyArr; } public static void main(String[] args) {int[] data = new int[8];try {File file = new File("data.txt");Scanner myReader = new Scanner(file);for(int i = 0;…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.C#: • Using System.Threading • Create a Baby class • It should have variables: time (int) and name (String). Write a constructor which takes in a name o Set the name variable in the object with the name you were passed. o Create a Random object o Set the time variable to your Random Object's .Next(5000) • Create a method Run() with no parameters o Print out “My name is X I am going to sleep for Yms" X should be the objects name, should be the time you randomly chose. o Call Thread.Sleep(time); o Print out "My name is X, I am awake, feed me!!" o You will need to wrap the contents of your run method in a try/catch block, catching Y ThreadInterruptedException. In your main class's main method, do the following: o Create 5 babies as follows: · Baby bl = new Baby(“Noah"); Repeat this for b2, b3, b4, b5. They should be named Noah, Olivia, Liam, Emma, Amelia. o Create 5 threads as follows: 1 Thread tl = new Thread(b1.Run); Repeat this for t2, t3, t4 and t5. o Start all 5 babies with a…
- // Program describes two files // tells you which one is newer and which one is larger import java.nio.file.*; import java.nio.file.attribute.*; import java.io.IOException; public class DebugThirteen1 { public static void main(String[] args) { Path file1 = Paths.get("/root/sandbox/DebugDataOne1"); Path file2 = Paths.get("/root/sandbox/DebugDataOne2.txt"); try { BasicFileAttributes attr1 = Files.readAttributes(file1, BasicFileAttributes.class); System.out.println("File: " + file1getFileName()); System.out.println("Creation time " + attr1.creationTime()); System.out.println("Last modified time " + attr1lastModifiedTime()); System.out.println("Size " + attr1.size()); BasicFileAttributes attr2 = Files.readAttributes(file2, BasicFileAttributes.class); System.out.println("\nFile: " + file2.getFileName); System.out.println("Creation time " +…Debug // Program describes two files // tells you which one is newer and which one is larger import java.nio.file.*; import java.nio.file.attribute.*; import java.io.IOException; public class DebugThirteen1 { publicstaticvoidmain(String[] args) { Path file1 = Paths.get("/root/sandbox/DebugDataOne1"); Path file2 = Paths.get("/root/sandbox/DebugDataOne2.txt"); try { BasicFileAttributes attr1 = Files.readAttributes(file1, BasicFileAttributes.class); System.out.println("File: " + file1getFileName()); System.out.println("Creation time " + attr1.creationTime()); System.out.println("Last modified time " + attr1lastModifiedTime()); System.out.println("Size " + attr1.size()); BasicFileAttributes attr2 = Files.readAttributes(file2, BasicFileAttributes.class); System.out.println("\nFile: " + file2.getFileName); System.out.println("Creation time " + attr2.creationTime()); System.out.println("Last modified time " + attr2.lastModifiedTime()); System.out.println("Size " + attr2.size());…Using Django Project (with a python syntax) make a bookstore wishlist program with the following criteria: Users can create and maintain 3 different wish lists which can have books moved tofrom the primary list. API Actions: - Create a wishlist of books that belongs to user. The books must haveunique names- Add a book to a user’s wishlisht- Remove a book from a user’s wishlist and place a book into the user’sshopping cart- List the book in a user’s wishlist