/**
   Overriding and hiding example
   
   @author A. Ozgelen
 */
public class Quarter extends Coin {
    public static String classDescription() {
	return "Quarter class";
    }

    @Override
    public String toString() {
	return "Quarter";
    }

    public static void main(String[] args) {
	Quarter quater = new Quarter();
	Coin coin = quater;
	System.out.println(Coin.classDescription());
	System.out.println(Quarter.classDescription());    
	System.out.println(coin);                          
    }
} 

class Coin {
    public Coin(){
	this(25);
    }

    public Coin(int value) {
	this.value = value ; 
	flip(); 
    } 
    
     public void flip() {
	face = (int) (Math.random() * 2); 
    }
    
     public int getFace() { 
	return face; 
    }

     public int getValue() {
	return value; 
    }

    public static String classDescription() {
	return "Coin class";
    }

    @Override
    public String toString() {
	return "Value:" + getValue();
    }

    // static constants 
    public static final int HEADS = 0 ; 
    public static final int TAILS = 1 ; 
    
    // data fields
    private int face ;    // head or tail 
    private int value ;   // in cents
    
}