As far as I know GC is used only when JVM needs more memory, but I’m not sure about it. So, please, someone suggest an answer to this question.
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As far as I know GC is used only when JVM needs more memory, but I’m not sure about it. So, please, someone suggest an answer to this question.
The garbage collection algorithm of Java is as I understand, pretty complex and not as straightforward. Also, there is more than algorithm available for GC, which can be chosen at VM launchtime with an argument passed to the JVM.
There’s a FAQ about garbage collection here: http://www.oracle.com/technetwork/java/faq-140837.html
Oracle has also published an article “Tuning Garbage Collection with the 5.0 Java[tm] Virtual Machine” which contains deep insights into garbage collection, and will probably help you understand the matter better: http://www.oracle.com/technetwork/java/gc-tuning-5-138395.html