Is there a way to know before an java object get destroyed??
For example:
class A{}
I have instantiated it as new A(). Now I would like to know when this object will get destroyed and do some operations before it get destroyed.
2 Answers
Your intention is highly unrecommended. Since it is entirely unpredictable when the gc is running and when this method is actually called.
How ever:
You can override the finalize() method of Object:
For Details see here: When is the finalize() method called in Java?
This method is called if and when the gc determines that a particular object is not referenced any more.
See also: Oracle JavaDoc for Object
Comments
Yes, there is a way, it is called "object finalization". Look at the Object.finalize() method. But beware: if that path down you go, only pain will you find.
