Chapter VI Question 23 (Occurrences of a specified character)

Chapter VI Question 23 (Occurrences of a specified character)

• *6.23 (Number of occurrences of specified characters) Use the following method header to write a method to find the number of occurrences of specified characters in a string.
  public static int count(String str, char a)
  For example, count("Welcome",'e') returns 2. Write a test program that prompts the user to enter a string and a character, and displays the number of times the character appears in the string.
  *6.23(Occurrences of a specified character)Write a method that finds the number of occurrences of a specified character in a string using the following header:
  public static int count(String str, char a)
  For example, count(“Welcome”, 'e') returns 2. Write a test program that prompts the user to enter a string followed by a character then displays the number of occurrences of the character in the string.
• Reference Code:

package chapter06;

import java.util.Scanner;

public class Code_23 {
    
    
    public static void main(String[] args) {
    
    
        Scanner input = new Scanner(System.in);
        System.out.print("Enter a sring: ");
        String str = input.nextLine();
        System.out.print("Enter a character: ");
        char a = input.nextLine().charAt(0);
        System.out.println("The times " + a + " in " + str + " is " + count(str,a));
    }
    public static int count(String str,char a) {
    
    
        int count = 0;
        for (int i = 0; i < str.length(); i++) {
    
    
            if (str.charAt(i) == a)
                count++;
        }
        return count;
    }
}

• The results show that:

Enter a sring: Welcome
Enter a character: e
The times e in Welcome is 2

Process finished with exit code 0