public class Duration extends Object{
	final int LEN =1000 * 2;
	int timeLength ;
	
	public Duration(){
		timeLength = LEN;
	}
	
	public Duration(int len){
		timeLength =len;
	}
	
	public void init(){
		timeLength = LEN;
	}
	
	public int getTimeLength(){
		return timeLength;
	}
	
	public void setTimeLength(int len){
		timeLength =len;
	}
	
	public void upLevel(){
		timeLength = (int)(timeLength / 3 * 2);
	}
}