import javax.swing.tree.*;
import javax.swing.event.*;
import java.io.*;
public class FailipuuMudel implements TreeModel{
   public void addTreeModelListener(TreeModelListener l){}
   public Object getChild(Object kaust, int nr){
      return ((File)kaust).listFiles()[nr];
   }
   public int getChildCount(Object kaust){
      File[] loetelu=((File)kaust).listFiles();
      if(loetelu!=null){
         return loetelu.length;
      }
      return 0;
   }
   public int getIndexOfChild(Object kaust, Object fail){
      File[] failid=((File)kaust).listFiles();
      for(int i=0; i<failid.length; i++){
         if(failid[i].equals(fail)){return i;}
      }
      return -1;
   }
   public Object getRoot(){
      return new File("d:\\");
   }
   public boolean isLeaf(Object s6lm){
      return !((File)s6lm).isDirectory();
   }
   public void removeTreeModelListener(TreeModelListener l){}
   public void valueForPathChanged(TreePath asukoht, Object v22rtus){}
}