java - Why are object stored in Heap -


why objects stored in heap?

as per understanding, object gets stored in heap , reference variable holds address of object.

reference variable stored in stack. if reference variable deleted object becomes unreachable. theoretically, object dead. (ofcourse, when there 1 reference variable referencing object).

so confusion did make necessary store object in heap ?

you mean in java, right?

  • stack slice's life cycle during function call,
  • stack store types has fix size, e.g interger, pointer,
  • stack small,
  • stack visible thread, not suitable global variables,

by way, jvm base on os, typically, on unix-like system, there stack & heap & mmap, jvm implementation make use of underling os interface, , memory model of jvm kind of similar os in aspect.


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