24h problems in convertDateTime in JSF

Question

I have an input textfield with a convertDateTime to see if the time is right. The problem is that convertDateTime is set to 12 hours of counting but I want 24 hours of counting, someone who knows how to solve this?

If for example, I type in 14:12, I get the error message: '14: 12 'could not be under stood as a date. But 02:12 is fine.

Here is the code:

<h:outputText value="Time"/>

<h:inputText value="#{backBean.time}" >
 <f:convertDateTime type="time" pattern="hh:mm" timeZone="#{backBean.timeZone}"/>
</h:inputText>

Backbean:

@ManagedBean(name = "backBean")
@SessionScoped
public class BackBean {

 private Date date = new Date();

 public void setTime(Date inDate)
{
    date.setMinutes(inDate.getMinutes());
    date.setHours(inDate.getHours());
 }

public Date getTime()
{
   return date;
  }

public TimeZone getTimeZone() {  
  TimeZone timeZone = TimeZone.getDefault();  
  return timeZone;  
  }  
}

Answer 1

The <f:convertDateTime> uses java.text.SimpleDateFormat API under the covers, whose javadoc is available here, listing all available pattern letters.

For hours, you used a pattern of hh which is in the javadoc described as

h   Hour in am/pm (1-12)

, while you clearly want the one described as follows in the javadoc:

H   Hour in day (0-23)

Fix it accordingly:

<f:convertDateTime type="time" pattern="HH:mm" timeZone="#{backBean.timeZone}"/>