Question

using Java program

please copy and paste the code don't screenshot it

import java.util.Scanner;
import java.io.File;

public class  {
   public static void main(String[] args) {
      // Create a new Scanner object to obtain 
      // input from System.in
      // --> TODO
      
      // Ask user for a word to search for. Print 
      // out a prompt
      // --> TODO
      
      // Use the Scanner object you created above to 
      // take a word of input from the user. 
      // --> TODO
      
      // *** Don't modify this line
      // Create a new file object to represent the 
      // file we are reading from. 
      // *** Important: Make sure that the file 
      // movieReviews.txt is in the same directory as
      // your Java source.  
      File file = new File("movieReviews.txt");
      
      // Read from the file, and print out each line
      try {
         // Just like we've created a Scanner object
         // to read from System.in, we can create one
         // to read from any File object. 
         Scanner fInput = new Scanner(file);
       
         // Variables to keep track of word scores
         int wordScoreTotal = 0;
         int count = 0;
         double wordScore = 0.0;
         
         // Keep looping through the file, and 
         // process each line
         while (fInput.hasNextLine()) {
            // Get the next line
            String line = fInput.nextLine();
            
            // Print out the next line. 
            System.out.println(line);
            // For your assignment, replace the 
            // line of code above with your code to count 
            // the number of occurrences of the word
            // that the user gave in the file.
            // You will use methods such as getNumericValue
            // in the Character class and the indexOf method 
            // in String.  
            // --> TODO 
         }
         
         // Print out the number of times the input word
         // appears in the file movieReviews.txt
         System.out.println("The word " + word +
                     " appears " + count + " times in the file");
                     
         // Calculate the average word score 
         // --> TODO
         
         // Print out the average word score
         System.out.println("The average score is " + wordScore);
      
      // DO NOT modify the next line   
      } catch(Exception e) { 
         e.printStackTrace();
      }
   
   }
}

Objective: This closed lab will provide you with experience with designing a class that is being used by another. The Problem This is a two-part assignment that you will complete in order to build a Movie Review Sentiment Analyzer. You will complete Part I today in Closed Lab. You will complete Part II in in a future assignment. When all the parts of this project are complete, you will be able to take a one- line review of some movie, such as: This film was a breath of fresh air and report that this was a positive review, or one such as: It made me want to poke out my eyeballs and report it as a negative review. Part 1 For this part, you are going to complete the first step of this project. And that is to take a single word, and look for the number of times it occurs in a file containing movie reviews Attached with this assignment is a file called movieReviews.txt. This file contains a number of one sentence reviews. Each of these reviews also has a score that ranges from 0 (most negative) to 4 (most positive). The score always appears as the first character of each line. For example, here is a positive review: 4 If a horror movie is primary goal is to frighten and disturb then they works spectacularly well ... A shiver-inducing, nerve- rattling ride. And here is a negative review: 0 Comes across as a relic from a bygone era, and its convolutions ... feel silly rather than plausible.

Answer 1

Code:

X Movie.java movieReviews.txt import java.util.Scanner; import java.io.File; public class Movie{ public static void main(String[] args) { // Create a new Scanner object to obtain // input from System.in // --> TODO Scanner input = new Scanner(System.in); // Ask user for a word to search for. Print // out a prompt // --> TODO System.out.println("Please enter the word you are looking for: "); // Use the Scanner object you created above to // take a word of input from the user. // --> TODO String word = input.nextLine(); // *** Don't modify this line // Create a new file object to represent the // file we are reading from. // *** Important: Make sure that the file // movieReviews.txt is in the same directory as // your Java source. File file = new File("movieReviews.txt"); // Read from the file, and print out each line try { // Just like we've created a Scanner object // to read from System.in, we can create one // to read from any File object. Scanner fInput = new Scanner(file); // Variables to keep track of word scores int wordScoreTotal = 0; int count = 0; double wordscore = 0.0; // Keep looping through the file, and // process each line while (fInput.hasNextLine()) { // Get the next line String line = fInput.nextLine(); // first convert the line and word to lowercase (case-insensitive ex: silly and silly both are same) // using indexof() method to find the given word in the current line or not . indexof() method returns the index of the word in a line. // it returns negative value when the given word is not present in the current line.

if ( line.toLowerCase().indexOf(word.toLowerCase() >=0) { count++; // incrementing count char ch = line.charAt(0); // taking first character(score) from Line, wordScoreTotal += Character.getNumericvalue(ch); // converting characer to integer and adding it to wordscoreTotal // For your assignment, replace the // line of code above with your code to count // the number of occurrences of the word // that the user gave in the file. // You will use methods such as getNumericValue // in the Character class and the indexof method // in String. // --> TODO // Print out the number of times the input word // appears in the file movieReviews.txt System.out.println("The word " + word + " appears " + count + " times in the file"); // Calculate the average word score // --> TODO wordscore = ((float) wordScoreTotal/count); // Print out the average word score System.out.println("The average score is " + wordscore); // DO NOT modify the next line } catch (Exception e) { e.printStackTrace();

Output:

Sum_1YQUITT! Chegg$ javac Movie.java s0m3_7hing@diff:-/Chegg$ java Movie Please enter the word you are looking for: spectacularly The word spectacularly appears 1 times in the file The average score is 4.0 s0m3_7hing@diff:-/Chegg$ java Movie Please enter the word you are looking for: silly The word silly appears 1 times in the file The average score is 0.0 som3_7hing@diff:-/Chegg$

movieReviews.txt file :

Movie.java X movieReviews.txt X 4 If a horror movie's primary goal is to frighten and disturd, then they works spectacularly well ... A shilver-including, nerverattling ride . 0 Comes across as a relic from a bygone era, and its convolutions .. feel silly rather than plausible. 2

Raw Code:

import java.util.Scanner;
import java.io.File;

public class Movie{
public static void main(String[] args) {
// Create a new Scanner object to obtain
// input from System.in
// --> TODO
Scanner input = new Scanner(System.in);
// Ask user for a word to search for. Print
// out a prompt
// --> TODO
System.out.println("Please enter the word you are looking for: ");
// Use the Scanner object you created above to
// take a word of input from the user.
// --> TODO
String word = input.nextLine();
// *** Don't modify this line
// Create a new file object to represent the
// file we are reading from.
// *** Important: Make sure that the file
// movieReviews.txt is in the same directory as
// your Java source.
File file = new File("movieReviews.txt");
  
// Read from the file, and print out each line
try {
// Just like we've created a Scanner object
// to read from System.in, we can create one
// to read from any File object.
Scanner fInput = new Scanner(file);

// Variables to keep track of word scores
int wordScoreTotal = 0;
int count = 0;
double wordScore = 0.0;

// Keep looping through the file, and
// process each line
while (fInput.hasNextLine()) {
// Get the next line
String line = fInput.nextLine();
// first convert the line and word to lowercase (case-insensitive ex: silly and Silly both are same)
// using indexOf() method to find the given word in the current line or not . indexOf() method returns the index of the word in a line.
// it returns negative value when the given word is not present in the current line.
if ( line.toLowerCase().indexOf(word.toLowerCase()) >=0 ) {
count ++; // incrementing count
char ch = line.charAt(0); // taking first character(score) from line.
wordScoreTotal += Character.getNumericValue(ch); // converting characer to integer and adding it to wordScoreTotal
}
// For your assignment, replace the
// line of code above with your code to count
// the number of occurrences of the word
// that the user gave in the file.
// You will use methods such as getNumericValue
// in the Character class and the indexOf method
// in String.
// --> TODO
}

// Print out the number of times the input word
// appears in the file movieReviews.txt
System.out.println("The word " + word +
" appears " + count + " times in the file");

// Calculate the average word score
// --> TODO
wordScore = ((float)wordScoreTotal/count);

// Print out the average word score
System.out.println("The average score is " + wordScore);
  
// DO NOT modify the next line   
} catch(Exception e) {
e.printStackTrace();
}

}
}

If you have any doubts feel free to comment in comment section .

DO VOTE(LIKE).