Java Programming

import java.util.*;

public class LetCount
{

  public static final int NUMCHARS = 27; //You define

// int addr(char ch) returns the equivalent integer address for the letter
// given in ch, 'A' returns 1, 'Z' returns 26 and all other letters return
// their corresponding position as well.

  public static int addr(char ch)
  {
    return (int) ch - (int) 'A' + 1;
  }

// Required method definitions for (1) analyzing each character to update
// the appropriate count; (2) determining most frequent letter; 
// (3) determining least frequent letter; and (4) printing final results
// should be defined here.
  
  public static char getCharValue(int index)
  {
    char character;
    int intValueOfA = Character.getNumericValue('A');
    for (index = 1; index <= NUMCHARS; index++)
    {
      int intValueOfChar = intValueOfA + index-1;
      character = (char) intValueOfChar;
    }
    return character;
  }
  
  public static void countLetters(int count[], String line)
  {
    for (int lineIndex = 0; lineIndex < line.length(); lineIndex++)
    {
      char letter = line.charAt(lineIndex);
      int arrayIndex = addr(letter);
      count[arrayIndex] = count[arrayIndex] + 1;
    }
  }
  
  public static char findMostFrequent (int [] count)
  {
	int biggestCount = 0;
	int biggestCountIndex = 0;
    for (int arrayIndex = 1; arrayIndex <= NUMCHARS; arrayIndex++)
    {
      if (count[arrayIndex] > biggestCount)
      {
        biggestCount = count[arrayIndex];
        biggestCountIndex = arrayIndex;
      }
    }
    return getCharValue(biggestCountIndex);
  }
  
  public static char findLeastFrequent(int [] count)
  {
	int smallestCount = 0;
	int smallestCountIndex = 0;
	for (int arrayIndex = 1; arrayIndex <= NUMCHARS; arrayIndex++)
	{
	  if (count[arrayIndex] < smallestCount)
	  {
	    smallestCount = count[arrayIndex];
	    smallestCountIndex = arrayIndex;
	  }
	}
	return getCharValue(smallestCountIndex);
  }
  
  public static void printResults(int [] count)
  {
	for (int arrayIndex = 1; arrayIndex <= NUMCHARS; arrayIndex++)
	{
      System.out.println(getCharValue(arrayIndex) + " occurred " + count[arrayIndex] + " times.");
	}
	System.out.println();
	System.out.println("Most frequent letter = " + findMostFrequent(count[]));
	System.out.println("Least frequent letter = " + findLeastFrequent(count[]));
  }

  public static void main(String[] args)
  {
    Scanner keyboard = new Scanner(System.in);  // for reading input

    int[] count = new int [NUMCHARS]; // count of characters
    String line;      // holds input line    
    
    // Other declarations as needed
    //initializes all elements of count[] array to 0
    for(int i=0; i<NUMCHARS; i++)
    {
      count=0;

}



// Method calls and other statements to complete problem solution go here

while (keyboard.hasNext())

{

line = keyboard.nextLine();

System.out.println(line);

countLetters(count[], line); 

}

printResults();

}

}
The error from the compiler occurs at the following lines:
System.out.println("Most frequent letter = " + findMostFrequent(count[]));System.out.println("Least frequent letter = " + findLeastFrequent(count[]));countLetters(count[], line);
Please help!  How do I change these lines so that the "'.class' expected" error is solved?