How to use org.apache.myfaces.taglib.core

@Override
public void setPageContext(PageContext context)
{
  super.setPageContext(context);
  setConverterIdString(NumberConverter.CONVERTER_ID);
}

@Override
protected ValueChangeListener createDelegateListener(ValueExpression type, ValueExpression binding)
{
  return new DelegateValueChangeListener(type, binding);
}

public void release()
{
  super.release();
  _dateStyle = null;
  _locale = null;
  _pattern = null;
  _timeStyle = null;
  _timeZone = null;
  _type = null;
}

protected Converter createConverter() throws JspException
  {
    DateTimeConverter converter = (DateTimeConverter)super.createConverter();
    ELContext elContext = FacesContext.getCurrentInstance().getELContext();
    setConverterDateStyle(elContext, converter, _dateStyle);
    setConverterLocale(elContext, converter, _locale);
    setConverterPattern(elContext, converter, _pattern);
    setConverterTimeStyle(elContext, converter, _timeStyle);
    setConverterTimeZone(elContext, converter, _timeZone);
    setConverterType(elContext, converter, _type);
    return converter;
  }

@Override
public int doStartTag() throws JspException
{
  super.setConverterId(CONVERTER_ID);
  return super.doStartTag();
}

@Override
protected Validator createValidator() throws javax.servlet.jsp.JspException
{
  if (_validatorIdString != null)
  {
    return this.createClassicValidator();
  }
  if (_validatorId != null && _validatorId.isLiteralText())
  {
    return this.createClassicValidator();
  }
  return new DelegateValidator(_validatorId, _binding, _validatorIdString);
}

private Converter _getDelegate()
{
  return _createConverter();
}

private ActionListener _getDelegate()
{
  return _createActionListener();
}

@Override
protected ActionListener createDelegateListener(ValueExpression type, ValueExpression binding)
{
  return new DelegateActionListener(type, binding);
}

public ConvertNumberTag()
{
  setConverterIdString(NumberConverter.CONVERTER_ID);
}

private Validator _getDelegate()
{
  return _createValidator();
}

private ValueChangeListener _getDelegate()
{
  return _createValueChangeListener();
}

public void setPageContext(PageContext context)
{
  super.setPageContext(context);
  setConverterIdString(NumberConverter.CONVERTER_ID);
}

private Converter _getDelegate()
{
  return _createConverter();
}

@Override
protected ValueChangeListener createDelegateListener(ValueExpression type, ValueExpression binding)
{
  return new DelegateValueChangeListener(type, binding);
}

@Override
public void release()
{
  super.release();
  _dateStyle = null;
  _locale = null;
  _pattern = null;
  _timeStyle = null;
  _timeZone = null;
  _type = null;
}

private ActionListener _getDelegate()
{
  return _createActionListener();
}

@Override
public void setPageContext(PageContext context)
{
  super.setPageContext(context);
  setConverterIdString(NumberConverter.CONVERTER_ID);
}

private Converter _getDelegate()
{
  return _createConverter();
}

@Override
public void setPageContext(PageContext context)
{
  super.setPageContext(context);
  setConverterIdString(NumberConverter.CONVERTER_ID);
}