Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 16MC
This is the process of converting an object to a series of bytes that represent the object’s data.
- a. serialization
- b. deserialization
- c. dynamic conversion
- d. casting
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Modify the code to read integer values from the keyboard, store them into a 15 element array, then write the array into a file named userin.txt
CODE
import java.util.Scanner;import java.io.*;
public class Storeintoarr {
public static void main(String[] args) throws IOException { File loopfile = new File("fileLoop.txt"); Scanner getAll = new Scanner( loopfile ); // connect a Scanner to the file int num = 0, square = 0; int[] items = new int[10]; int i = 0; while(getAll.hasNextInt()){ num = getAll.nextInt(); square = num * num ; //System.out.println("The square of " + num + " is " + square); items[i] = num; System.out.println("items[i] is " + items[i]); i = i + 1; } getAll.close(); }}
I just need help creating this Java code as described below in the image:
import java.util.Scanner;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.PrintWriter;import java.io.IOException;
public class LabProgram { public static void main(String[] args) throws IOException { Scanner scnr = new Scanner(System.in); /* TODO: Declare any necessary variables here. */ /* TODO: Read a file name from the user and read the tsv file here. */ /* TODO: Compute student grades and exam averages, then output results to a text file here. */ }}
i am having trouble with my code,
I believe I need to change the bold information but don't know what to replace it with in order to display my required output
import java.io.*;import java.util.*;
public class AccountBalance { public static void main(String[] args) { Scanner keyboard = new Scanner(System.in); List<Account> list = new ArrayList<>(); try { FileInputStream file = new FileInputStream("accounts-with-names.dat"); DataInputStream input = new DataInputStream(file); // Read data from the file and store it in an array or list here
while (input.available() > 0) { String name = input.readUTF(); long accountNumber = input.readLong(); double balance = input.readDouble(); boolean cashBack = input.readBoolean(); Account acc = new Account(name, accountNumber, balance, cashBack); list.add(acc); }…
Chapter 11 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Ch. 11.1 - Prob. 11.1CPCh. 11.1 - Prob. 11.2CPCh. 11.1 - Prob. 11.3CPCh. 11.1 - Prob. 11.4CPCh. 11.1 - Prob. 11.5CPCh. 11.1 - Prob. 11.6CPCh. 11.1 - Prob. 11.7CPCh. 11.1 - Prob. 11.8CPCh. 11.1 - Prob. 11.9CPCh. 11.1 - When does the code in a finally block execute?
Ch. 11.1 - What is the call stack? What is a stack trace?Ch. 11.1 - Prob. 11.12CPCh. 11.1 - Prob. 11.13CPCh. 11.1 - Prob. 11.14CPCh. 11.2 - What does the throw statement do?Ch. 11.2 - Prob. 11.16CPCh. 11.2 - Prob. 11.17CPCh. 11.2 - Prob. 11.18CPCh. 11.2 - Prob. 11.19CPCh. 11.3 - What is the difference between a text file and a...Ch. 11.3 - What classes do you use to write output to a...Ch. 11.3 - Prob. 11.22CPCh. 11.3 - What class do you use to work with random access...Ch. 11.3 - What are the two modes that a random access file...Ch. 11.3 - Prob. 11.25CPCh. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Prob. 3MCCh. 11 - Prob. 4MCCh. 11 - FileNotFoundException inherits from __________. a....Ch. 11 - Prob. 6MCCh. 11 - Prob. 7MCCh. 11 - Prob. 8MCCh. 11 - Prob. 9MCCh. 11 - Prob. 10MCCh. 11 - Prob. 11MCCh. 11 - Prob. 12MCCh. 11 - Prob. 13MCCh. 11 - Prob. 14MCCh. 11 - Prob. 15MCCh. 11 - This is the process of converting an object to a...Ch. 11 - Prob. 17TFCh. 11 - Prob. 18TFCh. 11 - Prob. 19TFCh. 11 - True or False: You cannot have more than one catch...Ch. 11 - Prob. 21TFCh. 11 - Prob. 22TFCh. 11 - Prob. 23TFCh. 11 - Prob. 24TFCh. 11 - Find the error in each of the following code...Ch. 11 - // Assume inputFile references a Scanner object,...Ch. 11 - Prob. 3FTECh. 11 - Prob. 1AWCh. 11 - Prob. 2AWCh. 11 - Prob. 3AWCh. 11 - Prob. 4AWCh. 11 - Prob. 5AWCh. 11 - Prob. 6AWCh. 11 - The method getValueFromFile is public and returns...Ch. 11 - Prob. 8AWCh. 11 - Write a statement that creates an object that can...Ch. 11 - Write a statement that opens the file...Ch. 11 - Assume that the reference variable r refers to a...Ch. 11 - Prob. 1SACh. 11 - Prob. 2SACh. 11 - Prob. 3SACh. 11 - Prob. 4SACh. 11 - Prob. 5SACh. 11 - Prob. 6SACh. 11 - What types of objects can be thrown?Ch. 11 - Prob. 8SACh. 11 - Prob. 9SACh. 11 - Prob. 10SACh. 11 - What is the difference between a text file and a...Ch. 11 - What is the difference between a sequential access...Ch. 11 - What happens when you serialize an object? What...Ch. 11 - TestScores Class Write a class named TestScores....Ch. 11 - Prob. 2PCCh. 11 - Prob. 3PCCh. 11 - Prob. 4PCCh. 11 - Prob. 5PCCh. 11 - FileArray Class Design a class that has a static...Ch. 11 - File Encryption Filter File encryption is the...Ch. 11 - File Decryption Filter Write a program that...Ch. 11 - TestScores Modification for Serialization Modify...Ch. 11 - Prob. 10PC
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