class item { 
   item  


  
  public item(String x) { _name = x; _self = null; }
  
  String name() { return exists()?self().name():_name; }
  
  public void redirect(item x) { _self = x; } 
  
  boolean exists() { return _self != null; }
  public item self() { return exists()?_self.self():this; }
  
  item _self;
  String _name;
  };
  

  public class go {
  
  public static void main(String[] args) {
  	item a = new item("a");
  	item b = new item("b");
  	a.redirect(b);
  	System.out.println(a.name()); 
 indeed, b


  	}
  
  };