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Java technology allows you to
use the finalize() method to do the
necessary cleanup before the garbage collector removes the object from memory.
This method is called by the garbage collector on an object when garbage
collection determines that there are no more references to the object. It is
defined in the Object class, thus it is
inherited by all classes. A subclass overrides the
finalize() method to dispose of system
resources or to perform other cleanup:
protected void finalize() throws Throwable
If an uncaught exception is
thrown by the finalize() method, the
exception is ignored and finalization of that object terminates.
The
finalize() method will be invoked only
once in the lifetime of an object.
You can use an object's
finalize() method to make it ineligible
for garbage collection. Note, however, that the garbage collector will not run
finalize() for this object
again.
The
finalize() method will always be
invoked once before the object is garbage collected. However, the
finalize() method might never be
invoked for an object in its lifetime, because there is no guarantee that it
will get garbage collected.
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350 Mock Questions on SCJP 1.5 - JUST Rs.200 or 7 USD
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