code: protected void verifyAttributes()
              throws JspException {
          if(_maxRepeat != null && _maxRepeat.intValue() <= 0) {
              String msg = Bundle.getErrorString("Tags_Pad_intTooSmall", new Object[]{_maxRepeat, "maxRepeat"});
              getRepeater().registerTagError(msg, null);
          }
  
          if(_minRepeat != null && _minRepeat.intValue() <= 0) {
              String msg = Bundle.getErrorString("Tags_Pad_minRepeatIntTooSmall", new Object[]{_minRepeat, "minRepeat"});
              getRepeater().registerTagError(msg, null);
          }
  
          // check composite properties
          if(_maxRepeat != null &&
                  _minRepeat != null &&
                  _minRepeat.intValue() > _maxRepeat.intValue()) {
              if(LOGGER.isWarnEnabled()) {
                  String msg = "The value of maxRepeat (" + _maxRepeat + ") must be greater than the value of minRepeat (" +
                          _minRepeat + ") on the Repeater Pad tag.";
                  LOGGER.warn(msg);
              }
  
              String msg = Bundle.getErrorString("Tags_Pad_minGreaterThanMax", new Object[]{_maxRepeat, _minRepeat});
              getRepeater().registerTagError(msg, null);
          }
      }
docs: Verify that the attributes set on the tag are correct.  Check:
  <ul>
  <li>The minRepeat value can be converted into an integer</li>
  <li>The maxRepeat value can be converted into an integer</li>
  <li>The minRepeat value is less than or equal to the maxRepeat value</li>
  </ul>
  
  @throws JspException if an error occurs that can not be reported on the page