[adlb1300]

I'm trying to create a program that will prompt the user for 10 values between 0 and 99. Once I have the values I want to create a little output bar chart using the asterik sign to show how many of the values fell into each category of 10, ie 0-9, 10-19, etc.. I'm able to prompt the user for the values and store them into an array however I'm having trouble calling to the class I developed for determining the frequency and outputting the chart. Any advice would be helpful. Also if I'm making it harder than I have to let me know that as well. Here is the code I have:

Code:

/*
 * Histogram.java
 *
 * Created on October 24, 2007, 3:52 AM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

/**
 *
 * @author Bill
 */

import java.io.*;
import javax.swing.*;

public class Histogram {
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        
        // creates
        int inputtedValue[] = new int[ 10 ];  // array to hold inputted data
        
        for( int inputCounter = 0; inputCounter < inputtedValue.length; inputCounter++ ) {
            String input = JOptionPane.showInputDialog
                    ("Please enter a number between 0 and 99\n" +
                    "Stop entering values at any time by entering -1.\n");
            
            int numberProvided = Integer.parseInt(input);
            inputtedValue[ inputCounter ] = numberProvided;
        }
        
        HistogramFreq freqCalc = new HistogramFreq();
        freqCalc.processValues();
    } // end main
} // end class Histogram

Code:

public class HistogramFreq
{
    private int valuesProvided[];
        
     public HistogramFreq(int inputtedValue[])
    {
        valuesProvided = inputtedValue;
    }
    
    public void processValues()
    {
     determineFrequency();  
    }
        
      public void determineFrequency()
      {
        int frequency[] = new int [10];
                
               for( int valueEntered : valuesProvided)
                    ++frequency[valueEntered/10];
               
               for(int count = 0; count < frequency.length; count++)
               {
                   System.out.printf("%02d-%02d: ", count * 10, count * 10 + 9);
                   
                   for(int stars = 0; stars < frequency[count]; stars++)
                       System.out.print("*");
                   
                   System.out.println();
               }
    } // end method determineFrequency()
    
} // end class HistogramFreq