Semantic error: Message incrementMedalCount() not understood by class'OlympicFrog'

[darkblue24]

Hi All

I have error: Semantic error: Message incrementMedalCount() not understood by class'OlympicFrog'

Below is my code. What is wrong with incrementMedalCount() method??

/**
 * Class OlympicFrog - Extends Frog Class with one additional instance variable: medalCount
 * (it holds the number of medals won by instance of OlympicFrog)
 * 
 * @author Marcin Steciuk
 * @version 1.0
 */
public class OlympicFrog extends Frog
{
	/* instance variables */
	private int medalCount; 
	private static OlympicFrog currentLeader = null; //OlympicFrog that has the most medals


	/**
	 * Constructor for objects of class OlympicFrog 
	 */
	public OlympicFrog()
	{
		super();
		this.medalCount = 0;
	}


	/* instance methods */

	/**
	 * Getter method for medalCount (returns value of medalCount)
	 */
	public int getMedalCount()
	{
		return this.medalCount;	
	}
	
	/**
	 * Getter method for currentLeader (returns value of currentLeader)
	 */
	public OlympicFrog getCurrentLeader()
	{
		return OlympicFrog.currentLeader;	
	}
	
	/**
	 * Setter method for currentLeader 
	 */
	public void setCurrentLeader(OlympicFrog aValue)
	{
		OlympicFrog.currentLeader = aValue;	
	}
	   
	
   /**
    * Increments the position of the medalCount by 1.
    */
   private void incrementMedalCount()
   {
      this.medalCount = this.medalCount + 1;
   }
}

[darkblue24]

Guys I found the issue = its cause its declared as private.