Action Point Of Sale Code

package cell;
import java.util.*;
class CellRam extends CellBase
{
 Vector rows = new Vector();
 static Object bestType(Object o)
 {
  try
  {
   o = new Float("" + o);
   }
  catch (Exception e)
  {
   }
  return o;
  }
 public void so(byte col, short row, Object val)
 {
  val = bestType(val);
  while (rows.size() <= row)
  rows.add(new Vector());
  Vector r= (Vector)rows.elementAt(row);
  r.setSize(Math.max(col+1, r.size()));
  r.setElementAt(val, col);
  }
 Vector deletions = new Vector();
 void ramDelete(short row)
 {
  rows.removeElementAt(row);
  deletions.add(new Short(row));
  }
 public short max()
 {
  return (short)(rows.size()-1);
  }
 public Object go(byte col, short row)
 {
  Object  o = null;
  try
  {
   Vector r = (Vector)rows.elementAt(row);
   o = r.elementAt(col);
   }
  catch (Exception e)
  {
   }
  // no assertions in Java 1.3
  if (o == null) o = "";
  return o;
  }
 byte ramCols(short row)
 {
  Object  ro = rows.elementAt(row);
  Vector r = (Vector) ro;
  return (byte)r.size();
  }
 }