import java.text.*;
 /**
  * That is, you can set the field width of a FieldFormat and
  * it will right-justify the formatted String in a field
  * of that width.
  *
  * @author Prof. David Bernstein, James Madison University
  * @version 1.0
  */
  public class FieldFormat
  {
  		private int fieldWidth = -1;

 /**
  * Default Constructor
  */
  public FieldFormat()
  {
		super();
  }


 /**
  * Change the length of a String to fit exactly into
  * a field with the current width
  *
  * If the String is lengthened it will be right-justified
  *
  * @param original The original String
  * @return The shortened or lengthened String
  */
  public String fitStringToField(String original)
  {
		int i;
		String returnString;
	
		returnString = "";

		if (fieldWidth > 0) // The field width has been set
		{ 						
			if (original.length() <= fieldWidth) // Lengthen original
			{ 
				for (i=1; i <= fieldWidth-original.length(); i++) 
				{
					returnString = returnString +  " ";
				}
  		   	returnString += original;
			} 
			else // Shorten original
			{ 
				returnString = original.substring(0, fieldWidth);
			}
		} 
		else // The field width hasn't been set
		{ 
			returnString = original;
		}
		return returnString;
	}


  /**
   * Set the field width
   *
   * @param width The width of the field
   */
   public void setFieldWidth(int width)
   {
		fieldWidth = width;
   }
} // end FieldFormat