A question about klassOop pointer in oopDesc.hpp

[Colin(Du Li)]

Hello,

There is "klassOop _klass" in oopDesc to store the address of class template
for every object.
I try to print out the value of "_klass". I find the last four bits for
_klass is always zero(like 7e7a0dd0, 7e7a0e50, 7e7a0e50).
Is my observation incomplete?
If no, what does this mean?
Does this mean the size of klassOop object is as large as 16 bytes (seems
kind of unreasonable..)?

Thanks a lot!

Colin
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