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Editorial Team
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Asked: 2026-06-09T10:39:50+00:00

I am new to GC and wondering what does garbage collector collect besides reference

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I am new to GC and wondering what does garbage collector collect besides reference that are no longer being referencing by any variables ? The following is the list that I want to check

  • Do primitive types (int, double, float, char….) get GC-ed ?
  • Do static variables get GC-ed ?
  • Do final variables get GC-ed (I think since it’s marked as immutable, so there’s nothing to collect) ?
  • Do all the methods (both static and non-static) get GC-ed ?
  • Do threads get GC-ed ?
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1 Answer

  1. Editorial Team

    GC doesn’t collect any references, it just frees the objects (memory on heap) which are no more reachable.

    Static is special memory location and associated with class/classloader. If class/classloader un-deployed then static content will be removed from memory.

    Primitive types if associated with object (class variables), then they will be GCed when object is not reachable.

    If local variables/param variables, they will be on stack, so as soon as method execution completed, they are reclaimed.

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