Question

12.13 (Count characters, words, and lines in a file) Write a program that will count the number of characters, words, and lines in a file. Words are separated by whitespace characters. The file name should be passed as a command-line argument, as shown in Figure 12.13 D Command Prompt exercise java Exercise12.13 Loan.java ile Loan.jaua has 1919 characters 10 words 71 lines lexercise Figure 12.13 The program displays the number of characters, words, and lines in the given file. This is for intro to java programming, we were told we could run it from system out instead of the command line and i wasnt sure how to do this Can please add the output

Answer 1

Note : The first program is getting the filename entered by the user as input to the program from the console

the second program is passing inputfile(path of the file) through command line arguments.

Could you plz go through this code and let me know if u need any changes in this.Thank You

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1)

// aboutComputer.txt

A computer is a device that can be instructed to carry out an
arbitrary set of arithmetic or logical operations automatically.
The ability of computers to follow a sequence of operations
called a program make computers very flexible and useful.
Since ancient times simple manual devices like the abacus
aided people in doing calculations. Early in the Industrial
Revolution, some mechanical devices were built to automate
long tedious tasks, such as guiding patterns for looms.

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// CountLinesWordsChars.java

import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class CountLinesWordsChars {
public static void main(String[] args) {
//Declaring variables
int count_lines=0;
int count_words=0;
int count_characters=0;

      
  
  
//Creating the Scanner class reference

       Scanner sc =null;
         
   /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner sc1 = new Scanner(System.in);
String line=null;
String fname;
String words[];
  
try{
   System.out.print("Enter the input filename :");
   fname=sc1.nextLine();
//Opening the file
sc= new Scanner(new File(fname));
  
//This loops continue to execute until the end of the file
while (sc.hasNext()){
  
//Counting the number of lines
count_lines++;
  
line=sc.nextLine();
  
//This for loop will count no of characters in the file
for(int i=0;i<line.length();i++)
{
if(line.charAt(i)!=' ' && line.charAt(i)!='\n')
{
//Counting no of characters
count_characters++;
}
}
  
//splitting each line into String array
words=line.split(" ");
for(int j=0;j<words.length;j++)
{
  
//Counting no of words in the file
count_words++;
}
  
}
} catch (IOException e)
{
//Displaying the exception
System.out.println("Exception :"+e);
}
  
//Displaying the number of lines in the file
System.out.println("No of Lines in the File :"+count_lines);
  
//Displaying the number of words in the file
System.out.println("No of Words in the File :"+count_words);
  
//Displaying the number of characters in the file
System.out.println("No of Characters in the File :"+count_characters);
}
}
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Output:

Enter the input filename :aboutComputer.txt
No of Lines in the File :8
No of Words in the File :75
No of Characters in the File :403

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2)

inputfile1.txt (Save this file under D Drive.Then the path of the file pointing to it is D:\\inputfile1.txt)

A computer is a device that can be instructed to carry out an
arbitrary set of arithmetic or logical operations automatically.
The ability of computers to follow a sequence of operations
called a program make computers very flexible and useful.
Since ancient times simple manual devices like the abacus
aided people in doing calculations. Early in the Industrial
Revolution, some mechanical devices were built to automate
long tedious tasks, such as guiding patterns for looms.

__________________

NoOfLinesWordsChars.java

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

public class NoOfLinesWordsChars {

   public static void main(String[] args) {
//Declaring variables
int count_lines=0;
int count_words=0;
int count_characters=0;
  
  
//Assigning the file name to the String variable
String fname = args[0];
  
//Creating the Scanner class reference
Scanner sc=null;
String line=null;
String words[];
  
try{
//Opening the file
sc= new Scanner(new File(fname));
  
//This loops continue to execute until the end of the file
while (sc.hasNext()){
  
//Counting the number of lines
count_lines++;
  
line=sc.nextLine();
  
//This for loop will count no of characters in the file
for(int i=0;i<line.length();i++)
{
if(line.charAt(i)!=' ' && line.charAt(i)!='\n')
{
//Counting no of characters
count_characters++;
}
}
  
//splitting each line into String array
words=line.split(" ");
for(int j=0;j<words.length;j++)
{
  
//Counting no of words in the file
count_words++;
}
// count_words+=new StringTokenizer(line," ,").countTokens();
}
} catch (IOException e)
{
//Displaying the exception
System.out.println("Exception :"+e);
}
  
//Displaying the number of lines in the file
System.out.println("No of Lines in the File :"+count_lines);
  
//Displaying the number of words in the file
System.out.println("No of Words in the File :"+count_words);
  
//Displaying the number of characters in the file
System.out.println("No of Characters in the File :"+count_characters);

   }

}

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Output:

CWindows Command Processor E:丷javac NoOf LinesWordsChars-Java E: >java NoofLinesWordsChars D:inputfile1.txt No of Lines in the File 8 No of Words in the File :75 No of Characters in the File :403

_______________Could you plz rate me well.Thank You