public class DVD implements Comparable {
     private   String title;
     private   int year;
     private   int duration;

     public DVD () { this ("",0,0); }
     public DVD (String newTitle, int y, int minutes) {
         title = newTitle;
         year = y;
         duration = minutes;
     }
     
     public int compareTo(Object obj) {
     	if (obj instanceof DVD) {
     		DVD aDVD = (DVD)obj;
     		return title.compareTo(aDVD.title);
     	}
		return 0;     	
     }

     public String getTitle() { return title; }
     public int getDuration() { return duration; }
     public int getYear() { return year; }
     public void setTitle(String t) { title = t; }
     public void setDuration(int d) { duration = d; }
     public void setYear(int y) { year = y; }

     public String toString() {
         return ("DVD (" + year + "): " + title + " with length: " + duration);
     }
 }