Some of the examples are: 
8 has 2 holes
W has no holes
# has 1 hole
% has 2 holes
合作 is non-ASCII char
——————————————————————————————————
import java.util.Scanner;
class KW
{
    public static void main(String args[])
    {
        System.out.println("———————————————————————————————————————————");
        System.out.println("Program to find number of holes in a string");
        System.out.println("———————————————————————————————————————————");
        char[] singlehole={'a','A','b','d','D','e','g','o','O','p','P','q','Q','R','0','4','6','9','@','#'};
        char[] doublehole={'B','8','&','%'};
        String s="";
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter any string ");
        s=sc.nextLine();
        
        s=s.replaceAll("[^\\p{ASCII}]","");
        System.out.print("\nKeyboard characters "+s);
        
        int count=0;
        char[] ch=s.toCharArray(); 
        for(int i=0;i<ch.length;i++)
        {
            for(int j=0;j<singlehole.length;j++)
            {
                if(ch[i]==singlehole[j])
                {
                    count+=1;
                }
            }
            
            for(int j=0;j<doublehole.length;j++)
            {
                if(ch[i]==doublehole[j])
                {
                    count+=2;
                }
            }
        }
        System.out.println("\n\nNumber of holes in keyboard characters "+count);
        System.out.println("———————————————————————————————————————————");
    }
}

kodingwindow@kw:~$ javac KW.java
kodingwindow@kw:~$ java KW
———————————————————————————————————————————
Program to find number of holes in a string
———————————————————————————————————————————
Enter any string KODINGWINDOW

Keyboard characters KODINGWINDOW

Number of holes in keyboard characters 4
———————————————————————————————————————————

kodingwindow@kw:~$ java KW
———————————————————————————————————————————
Program to find number of holes in a string
———————————————————————————————————————————
Enter any string 编码合作WINDOW

Keyboard characters WINDOW

Number of holes in keyboard characters 2
———————————————————————————————————————————
kodingwindow@kw:~$ 

//Removed non-ASCII characters

import java.util.Scanner;
class KW
{
    public static void main(String args[])
    {
        System.out.println("———————————————————————————————————————————");
        System.out.println("Program to find number of holes in a number");
        System.out.println("———————————————————————————————————————————");
        String s="";
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter any number ");
        s=sc.nextLine();

        int count=0,holes=0;
        for(int i=0;i<s.length();i++) 
        {
            if(s.charAt(i)==('0')||s.charAt(i)==('4')||s.charAt(i)==('6')||s.charAt(i)==('9'))
            {
                count++;
                holes=1;
                System.out.println("Hole in  "+s.charAt(i)+" - "+holes);
            }               
            else if(s.charAt(i)==('8'))
            {
                count+=2;
                holes=2;
                System.out.println("Holes in "+s.charAt(i)+" - "+holes);
            }
            else
            {
                holes=0;
                System.out.println("Hole in  "+s.charAt(i)+" - "+holes);
            }
        }
        System.out.println("\nTotal number of holes in given number is "+count);
        System.out.println("———————————————————————————————————————————");
    }
}

kodingwindow@kw:~$ javac KW.java
kodingwindow@kw:~$ java KW
———————————————————————————————————————————
Program to find number of holes in a number
———————————————————————————————————————————
Enter any number 8789522453
Holes in 8 - 2
Hole in  7 - 0
Holes in 8 - 2
Hole in  9 - 1
Hole in  5 - 0
Hole in  2 - 0
Hole in  2 - 0
Hole in  4 - 1
Hole in  5 - 0
Hole in  3 - 0

Total number of holes in given number is 6
———————————————————————————————————————————
kodingwindow@kw:~$