Java PropertyChangeListner

Question

if I send two null values as below.

pcl.firePropertyChange("name", null, null)

it will recognize this as a change and fires propertyChange(PropertyChangeEvent evt).

Is this a bug? Any suggestions ?

if both old value and new value are equal it should not fire propertychange event. So in my case both old value and new value is null. Then why it should fire propertychange event ? — Rakhita Wickramatunge
– Rakhita Wickramatunge, Commented Nov 30, 2011 at 11:45
no worries found the trick. stuffthathappens.com/blog/2007/12/15/… — Rakhita Wickramatunge
– Rakhita Wickramatunge, Commented Nov 30, 2011 at 11:52
this is not a bug, this is the specified behaviour. It means something like: "Something has changed, please read the values directly from the bean" — keuleJ
– keuleJ, Commented Nov 30, 2011 at 12:01

CKuck · Accepted Answer · 2011-11-30 11:22:12Z

1

It's working as defined in the JavaDoc:

No event is fired if old and new are equal and non-null.

So no bug.

answered Nov 30, 2011 at 11:22

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