Question

***** JAVA ONLY *****

Write a program that asks the user to enter the name of a file, and then asks the user to enter a character. The program should count and display the number of times that the specified character appears in the file. Use Notepad to create a simple file that can be used to test the program.

***** JAVA ONLY *****

Answer 1

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

public class CountCharactersInFile {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter file name: ");
        File file = new File(in.nextLine());
        try {
            Scanner fin = new Scanner(file);
            System.out.print("Enter a character: ");
            char ch = in.next().charAt(0);
            int count = 0;
            String line;
            while (fin.hasNextLine()) {
                line = fin.nextLine();
                for (int i = 0; i < line.length(); i++) {
                    if (line.charAt(i) == ch) {
                        ++count;
                    }
                }
            }
            System.out.println("Count of " + ch + " in file is " + count);
            fin.close();
        } catch (FileNotFoundException e) {
            System.out.println(file.getAbsolutePath() + " is not found!");
        }
    }
}