Latest CTS Aptitude Question SOLUTION: what is a garbage collector

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(#M40037420) CTS Programming question java Keep an EYE

what is a garbage collector

Asked In CTS Anuj Tiwari (9 years ago)

Unsolved Read Solution (6)

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Sourav Kumar Pandey  (9 years ago)

It frees memory allocated to objects that are not being used by the program any more - hence the name "garbage". For example:

public static Object otherMethod(Object obj) {
return new Object();
}

public static void main(String[] args) {
Object myObj = new Object();
myObj = otherMethod(myObj);
}

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Hardip Bhalani  (9 years ago)

Garbage Collector is part of JRE that makes sure that object that are not referenced will be freed from memory.
It usually runs when you app runs out of memory. AFAIK it holds a graph that represents the links between the objects and isolated objects can be freed.
To save performance the current objects grouped into generations, each time GC scans an object and finds that it is still referenced its generation count incremented by 1 (to some max maximum value, 3 or 4 i think) , and the new generation are scanned first (the shortest the object in memory the more probably it is no longer needed) so not all objects being scanned every time GC run.

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sree nandhini  (9 years ago)

garbage means unreferenced objects garbage collector is used to destroy the unused objects

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ARULKUMAR  (9 years ago)

garbage collector converts used memory into unused.......when its longer no used
an also it handles automatic memory management

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S TANAJI RAO  (9 years ago)

it is automated memory allocation in java programming language.

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Anmol Neema  (9 years ago)

A garbage collector is a program that collects the space not utilize by any process.
In java, JVM provides the environment for the garbage collector

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