code: public int getDisplaySize() {
      int vtype = type.getSqlType();
      if (vtype == Types.VARCHAR || vtype == Types.CHAR) {
        int maxWidth = maxCharlen[charsetNumber & 0xff];
        if (maxWidth == 0) {
          maxWidth = 1;
        }
  
        return (int) length / maxWidth;
  
      }
      return (int) length;
    }
docs: Get column size.
  
  @return size