// Filename Counters/RollOverCounter.java.
// Providing a non-abstract counter class with 
// roll over behaviour.
//
// Written for JFL book Chapter 3 see text.
// Fintan Culwin, v0.1, January 1997
//
// Added the implementation of void print() to avoid a compliant by the javac
// (jdk1.4)
// Xiannong Meng
// aug-14-2003
//
 
package CountersPkg;
 
public class RollOverCounter extends LimitedCounter { 

    public RollOverCounter() {  
        super();
    }  // End default Constructor.
    
    public RollOverCounter( int minToCount, int maxToCount) {  
        super( minToCount, maxToCount);
    }  // End principal Constructor.
 
    public void count(){ 
	if ( this.isAtMaximum()) { 
	    this.setCountTo( this.minimumIs());
	} else { 
	    super.count();
	}   
    } // End count.
    
    public void unCount(){ 
	if ( this.isAtMinimum()) { 
	    this.setCountTo( this.maximumIs());
	} else { 
	    super.unCount();
	}   
    } // End unCount.

    // print
    public void print()
    {
	System.out.println(" Value of the counter " + numberCountedIs());
    }

} // End RollOverCounter