Action Point Of Sale Code

package cellbase;
import java.io.*;
public class CellFile extends CellRam
{
 RandomAccessFile f;
 CellFile(String name)
 {
  name = name.toUpperCase() ;
  if (name.length() != 3) throw new IllegalArgumentException("Table names must be precisecly three characters long.");
  for (int i=0; i<name.length(); i++)
  if (!Character.isLetter(name.charAt(i))) new IllegalArgumentException("Table names may only contain alpha characters.");
  File path  = new File(name + ".csv");
  path = Profile.rooted( path+"");
  try
  {
   if (!path.exists())
   path.createNewFile();
   f = new RandomAccessFile(path, "rw");
   }
  catch (IOException  e)
  {
   System.err.println(path);
   e.printStackTrace();
   System.exit(1);
   }
  }
 }