The Spinner's decode Method

• It uses a private getIncrementedValue method:
  • Checks user input against spinner's minimum and maximum attributes.
  • Those attributes are set by the spinner's tag handler class (discussed later).
• It stores submitted value in the component by calling setSubmittedValue.
  • Submitted value will subsequently be converted and validated by the framework.
• setSubmittedValue is called even if the input does not parse to an integer:
  • So that the error will be handled later in the JSF life cycle by a standard converter (see next)
• You must call setValid(true) after setting the submitted value, or the current page will be redisplayed.