Filesystem

public class FileSystem {
 private Directory root;
 public FileSystem(Directory d) {
     root = d;
 }
 public void search(String name){
     if (root==null)
         return;
     Elm e = root.search(name);
     if (e==null)
         System.out.println("no such file or directory");
     else
         e.show();
 }
}