/**
 * a special type of text field for handling integers
 * 
 * @author Mr J
 * @version 20040220
 */
public class IntegerTextField extends java.awt.TextField
{
  // we don't actually need any extra data members for this class
  // the constructors can be inherited from the superclass
  public IntegerTextField(int n)
  {
    super(n);
  }
  public IntegerTextField(String s)
  {
    super(s);
  }
  /**
   * Method to return status of the TextField
   * 
   * @return true if the TextField has no text in it
   */
  public boolean isEmpty()
  {
      // Get the String in the field and test it for length
      return (super.getText().length() == 0); 
  }
  /**
   * Method to return contents of the field as an int 
   * @return the integer
   */
  public int getInteger()
  {
    return Integer.parseInt(super.getText().trim());
  }
}