public abstract class Item { 
 private String title;
 private double playTime; 
 private boolean ownIt; 
 private String comment; 

 public Item(String title, double playTime, 
	       boolean ownIt, String comment) { 
 //... 
} 

 public String getTitle() { 
  return title; 
 } 

 //... other accessors 

 public abstract String getDescription(); 
}