code: public void setDecimalCount(int size) {
  		if (size < 0) {
  			throw new IllegalArgumentException("Decimal length should be a positive number");
  		}
  		if (size > this.length) {
  			throw new IllegalArgumentException("Decimal length should be less than field length");
  		}
  		if (this.type != DBFDataType.NUMERIC && this.type != DBFDataType.FLOATING_POINT) {
  			throw new UnsupportedOperationException("Cannot set decimal count on this field:" + this.type);
  		}
  		this.decimalCount = (byte) size;
  	}
docs: Sets the decimal place size of the field.
  Before calling this method the size of the field
  should be set by calling setFieldLength().
  
  @param size of the decimal field.