Hi all,
building my homework work fine but when running the program I get the
following errors:
run:
Exception in thread "main" java.lang.NullPointerException
at MyOwnEvent.getCurrentTime(MyOwnEvent.java:20)
at MyOwnListenerImpl.somethingHappened(MyOwnListenerImpl.java:
4)
at MyOwnEventSource.triggerSomethingEvent
(MyOwnEventSource.java:31)
at MyOwnEventExample.main(MyOwnEventExample.java:12)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
I´ m a little bit confused about how to return the date and time. I
think there lies the root problem that leads to these errrors. Here´s
a glance at my "MyOwnEvent.java":
[...]
import java.util.EventObject;
import java.util.Date;
public class MyOwnEvent extends EventObject {
/** Creates a new instance of MyEvent */
public MyOwnEvent(Object source) {
super(source);
}
public MyOwnEvent(Object source, String myOwnEventName) {
super(source);
this.myOwnEventName = myOwnEventName;
}
private String myOwnEventName;
private Date myOwnEventDate;
public long getCurrentTime() {
return myOwnEventDate.getTime();
}
// public void setMyOwnEventDate(Date myOwnEventDate) {
// this.myOwnEventDate = myOwnEventDate;
// }
}
I always get in trouble with the myOwnEventDate variable. Does it
really have to by a Date ? When using the myOwnEventDate within
getCurrentTime it´s only possible to use "getTime". That´s why I
declared the returning value of getCurrentTime as "long". Something´s
wrong there but I just can´t clear the fog.
Any help would be appreciated :)
Kind regards
Frank
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/javaprogrammingwithpassion?hl=en
-~----------~----~----~----~------~----~------~--~---
