1.4 The class from the iostream header is used to create the cout object that is used to accept user input from the keyboard. а. ostream b. ifstream С. iostream d. ofstream е. istream
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- I need help with fixing this java program as described in the image below: import java.util.Scanner;import java.io.FileInputStream;import java.io.IOException; public class LabProgram { public static void main(String[] args) throws IOException { Scanner scnr = new Scanner(System.in); // Read the file name from the user String fileName = scnr.nextLine(); // Open the CSV file try (Scanner fileScanner = new Scanner(new FileInputStream(fileName))) { while (fileScanner.hasNextLine()) { // Read each line from the CSV file String line = fileScanner.nextLine(); // Split the line into showtime, title, and rating String[] movieData = line.split(","); // Extract showtime, title, and rating String showtime = movieData[0]; String title = movieData[1].length() > 44 ? movieData[1].substring(0, 44) : movieData[1]; String rating = movieData[2]; // Print the…Examine the code and write - What is the content of the first 100 characters of text at the end of the program with output? import java.net.MalformedURLException; import java.net.URL;import java.net.URLConnection;import java.io.IOException;import java.util.Scanner;public class Question1 {@SuppressWarnings({ "resource", "unused" })public static void main(String[] args) throws IOException {URLConnection connection = null;try {connection = new URL("http://sun.com").openConnection();} catch (IOException e) {e.printStackTrace();}String text = new Scanner(connection.getInputStream()).useDelimiter("\\Z").next();}}here solution for part a pls give solution for part b, c, d import java.io.*;public class CopyFile { public static void main(String args[]) throws IOException { FileInputStream in = null; FileOutputStream out = null; try { in = new FileInputStream("input.txt"); out = new FileOutputStream("output.txt"); int c; while ((c = in.read()) != -1) { out.write(c); } }finally { if (in != null) { in.close(); } if (out != null) { out.close(); } } }
- in java Declare a FileOutputStream named outStream and a PrintWriter named dataFS. Ex: If the input is leek.txt 37.5, then leek.txt contains: 37.5 kilograms of leeks 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 import java.io.IOException; public class LeekFileOutput { publicstaticvoidmain(String[] args) throwsIOException { Scannerscnr=newScanner(System.in); StringleekFileName; doubleleekQuantity; /* Additional variable declarations go here */ leekFileName=scnr.next(); outStream=newFileOutputStream(leekFileName); dataFS=newPrintWriter(outStream); leekQuantity=scnr.nextDouble(); dataFS.println(leekQuantity+" kilograms of leeks"); dataFS.close(); } }Which is true? a. The FileOutputStream class includes println( ) b. A PrintWriter object should be closed using close( ) c. A PrintWriter constructor requires an OutputStream object d. A FileOutputStream object opens an existing file JAVAWrite an address book program that stores your contacts' names and their email addresses. The names and email addresses are originally stored in a file called phonebook.in, in the format: Harry Pottertheboywholived@hogwarts.eduHermione Grangerbrightestwitch@hogwarts.eduRon Weasleyroonilwazlib@hogwarts.eduDraco Malfoymyfatherwillhearaboutthis@hogwarts.eduSeverus Snapehalfbloodprince@hogwarts.eduAlbus Dumbledorealasearwax@hogwarts.edu Your program should read from the file, storing the names and corresponding email addresses in a dictionary as key-value pairs. Then, the program should display a menu that lets the user enter the numbers 1 through 5, each corresponding to a different menu item: 1) look up an email address2) add a new name and email address3) change an email address4) delete a name and email address5) save address book and exit When the user enters 1, the program should prompt them for a name, and then print the corresponding email address. If there is no dictionary entry…
- Write an application that displays the sizes of the files lyric1.txt and lyric2.txt in bytes as well as the ratio of their sizes to each other. Here is the code so far: import java.nio.file.*; import java.nio.file.attribute.*; import java.io.IOException; public class FileSizeComparison { public static void main(String[] args) { Path textFile = Paths.get("/root/sandbox/lyric1.txt"); Path wordFile = Paths.get("/root/sandbox/lyric2.txt"); // Write your code here } }in java Declare a FileOutputStream named fileStream and a PrintWriter named outFS. Ex: If the input is data.txt Ahmed, then data.txt contains: Ahmed purchased melons 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 import java.io.IOException; public class MelonDataProcessor { publicstaticvoidmain(String[] args) throwsIOException { Scannerscnr=newScanner(System.in); StringdataFileName; StringmelonOrder; /* Additional variable declarations go here */ dataFileName=scnr.next(); fileStream=newFileOutputStream(dataFileName); outFS=newPrintWriter(fileStream); melonOrder=scnr.next(); outFS.println(melonOrder+" purchased melons"); outFS.close(); } }// 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 " +…
- Question 4 1-What does implementing the Serializable keyword do to a java class? Group of answer choices It is a flag that tells the compiler that this classes objects may be serialized. Sends that class into a stream. Nothing Makes it looks like you know java. 2- What mechanism allows objects to be passed over a stream? Encapsulation Serialization MUltithreading Abstraction 3- How would you import an entire package names graphics? import graphics.Rectangle; import graphics; import java.util.*; import graphics.*; ........Which of the following are true? The Serializable interface has no methods. The Serializable method has been deprecated (fallen into disfavor) because it transmits data as a byte stream. All classes implement the Serializable interface by default. a and b are both true.Here is the code that needs to be debugged, Ive done most of it but I think there is a problem in the logic that I cant find: // 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: " + file1.getFileName()); System.out.println("Creation time " + attr1.creationTime()); System.out.println("Last modified time " + attr1.lastModifiedTime()); System.out.println("Size " + attr1.size()); BasicFileAttributes attr2 = Files.readAttributes(file2,…
