FrequencyCountDemo

 import java.util.Scanner;

public class FrequencyCountDemo

{

public static void main(String[] args)

{

Scanner s = new Scanner(System.in);

System.out.println("Eneter a string");

String str = s.nextLine();

System.out.println("Enter a character");

char ch = s.next().charAt(0);

int count = 0;

for(int i=0;i<str.length(); i++)

{

if(str.charAt(i) == ch)

count++;

}

System.out.println("frequency = " + count);

}

}