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Hai,
Can anybody tell me the size of primitive data type boolean ?
I didn't get good answer by searching.
Thanks in advance
- Srinivasa Raju Datla

Srinivasa wrote:
> Hai,
> Can anybody tell me the size of primitive data type boolean ?
> I didn't get good answer by searching.
> Thanks in advance

It doesn't have a defined size. A Java implementation is free to store a
boolean in any fashion that it chooses.

Thank you Mike

Mike Schilling wrote:
> Srinivasa wrote:
> > Hai,
> > Can anybody tell me the size of primitive data type boolean ?
> > I didn't get good answer by searching.
> > Thanks in advance
>
> It doesn't have a defined size. A Java implementation is free to store a
> boolean in any fashion that it chooses.

hi,
1 byte is the size of boolean type
Srinivasa wrote:
> Thank you Mike
>
> Mike Schilling wrote:
> > Srinivasa wrote:
> > > Hai,
> > > Can anybody tell me the size of primitive data type boolean ?
> > > I didn't get good answer by searching.
> > > Thanks in advance
> >
> > It doesn't have a defined size. A Java implementation is free to store a
> > boolean in any fashion that it chooses.

wrote:
> hi,
> 1 byte is the size of boolean type

Why do you say that? Can you prove that a JVM can't represent an array of
booleans using individual bits?

Srinivasa wrote:
> Hai,
> Can anybody tell me the size of primitive data type boolean ?
> I didn't get good answer by searching.
> Thanks in advance
> - Srinivasa Raju Datla
>

It is up to the individual JVM implementation. It is possible that
different amounts of memory will be allocated in different situations.
However, the case that is both most interesting and most measurable is a
large boolean[] array.

I've previously measured it as one byte per element, rounded up to a
multiple of 8 and plus 8 bytes per array overhead. However, your mileage
may vary, and if you really need to know you should measure it on the
system you care about.

Patricia