/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static int countLetter(char letter, String texto)
    {
        if (texto.length() == 0) return 0;
        if (texto.charAt(0) == letter) 
            return 1 + countLetter(letter, texto.substring(1));
        return countLetter(letter, texto.substring(1));
    }
 
	public static void main (String[] args) throws java.lang.Exception
	{
		char letter = 'a';
        String texto = "Programação";        
        System.out.println(countLetter(letter, texto));
	}
}

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