Question

JAVA Help Write an application that inputs a line of text and a search character and uses String method indexOf to determine the number of occurrences of the character in the text.

Answer 1

CODE:

import java.io.File;

import java.util.Scanner;

public class abc {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("Enter a String: ");

        String input = sc.nextLine();  // taking the input string from the user

        System.out.println("Enter the char: ");

        String ch = sc.next(); // taking the character to be counted from the user

        int count = 0; // declaring the variable to store the count with 0

        while (input.indexOf(ch) != -1) { // indexOf return the first index at which the char is found

            input = input.substring(input.indexOf(ch) + 1); // then updating the string with the substring

            // which is from one index after the index at which the char was to found to last

            count++; // increasing the value of count

        }

        System.out.println("The number of occurrences of the character in the text is " + count); //printing it

    }

}

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