Find Frequency of a particular character in a String

 Find Frequency of a particular character in a String

I/p:

hi hello how are you

h

O/p:

3

PROGRAM:

import java.util.*;

class FrequencyforparticularCharacter{

    public static void main(String args[])

    {

        Scanner sc=new Scanner(System.in);

        String s1=sc.nextLine();

        char c=sc.next().charAt(0);

        String arr[]=s1.split(" ");

        ArrayList<Character> al=new ArrayList<>();

        for(int i=0;i<arr.length;i++)

        {

            String s2=arr[i];

            for(int j=0;j<s2.length();j++)

            {

                al.add(s2.charAt(j));

            }

        }

        int a=Collections.frequency(al,c);

        System.out.println(a);//3

    }

}

// hi hello how are you

// h

// 3