What is garbage collection in Java, and how can it be used ?
Answers were Sorted based on User's Feedback
Answer / pranab dutta
When a Java object becomes unreachable to the program, then
it is subjected to garbage collection. The main use of
garbage collection is to identify and discard objects that
are no longer needed by a program so that their resources
can be reclaimed and reused.
|Is This Answer Correct ?||321 Yes||35 No|
Answer / janet
When an object is no longer referred to by any
variable,java automatically reclaims memory used by that
object.This is known as garbage collection.
System.gc() method may be used to call it explicitly.
|Is This Answer Correct ?||180 Yes||34 No|
GarbageCollector: Whenever an object is no longer used in
the program at that time the garbage collector reclaims the
memory of an object.It is controlled by the JVM ,The JVM
runs periadically by using "mark" and "sweep"algorithms.
Instead of "destructor" in c++ , java supports garbage
|Is This Answer Correct ?||84 Yes||21 No|
Answer / ms
garbage collecton in java means, if a particular object in
a program is not being refered since long time then it will
be automatically deleted with the help of garbage collector
so that some amount of memory is saved.we can explicitily
call it by adding a method system.gc()in the program.so in
this case there is no need to use'destructor'to destroy the
|Is This Answer Correct ?||69 Yes||17 No|
Answer / veer
When an object has of no use in a program then it has to be
discarded to free the occupied space by it so that other
object can fill the space.That is what Garbaghe collection
|Is This Answer Correct ?||42 Yes||12 No|
Garbage collection is a thread, that runs to reclaim the
memory by destroying objects which object is cannot be
Deleting Dynamically created objects from the memory.
Finalize method used to achieve garbage collection.
By using Runtime.gc() or System.gc() the object will be
|Is This Answer Correct ?||30 Yes||14 No|
Answer / syed sikandar bakht
when an object in memory is no longer refered by a variable,
the garbage collector automatically move it to garbage
instead of calling destructor JVM do it automatically, as we
use destructor in c++ to destroy the object.
|Is This Answer Correct ?||20 Yes||6 No|
Answer / sangeetha
when we remove the object that it will be stored particular
memory space these are known as garbage collection.
It is finalize method is used in the garbage collection.
|Is This Answer Correct ?||32 Yes||20 No|
Answer / ravi
when there are no refrences to an object,means that it is
not in use anymore.so the JVM marks it for garbage
collection ,which is basically a process of taking back the
resources from the object which was given to it earlier.
|Is This Answer Correct ?||14 Yes||2 No|
Answer / dsr
when ever object scope is over at that the object memory
removed.This is nown as garbageCollection.
|Is This Answer Correct ?||19 Yes||11 No|
Is ++ operator is thread safe in java?
How to overcome the exception object reference not set to an instance of object?
What is the difference between compare and compareto in java?
what is polymorphism?
What is the nested interface?
Can we have multiple public classes in a java source file?
when,where and how to use abstract class and interface
How GUI component handle its own events?
In case of inheritance what is the execution order of constructor and destructor?
Where is stringbuffer stored?
What is abstraction in java?
What is this keyword used for?