code: public void setChar(String alignChar) {
          _theadTag.registerAttribute(AbstractHtmlState.ATTR_GENERAL, HtmlConstants.CHAR, alignChar);
      }
docs: Sets the value of the horizontal alignment character attribute rendered by the HTML thead tag.
  
  @param alignChar the alignment character
  @jsptagref.attributedescription The horizontal alignment character rendered by the HTML thead tag.
  @jsptagref.attributesyntaxvalue <i>string_alignChar</i>
  @netui:attribute required="false" rtexprvalue="true" description="The horizontal alignment character rendered by the HTML thead tag."