object size

[lalit mohan]

hello friends,
if i have a class with no variable declaration and method
and i have a object of that class. then but will be size of that object.
there is any method for obtain the size of object.

[Ali Gohar]

It will not take any bytes in memory

[Carlos Failde]

An empty class with no fields must still extend another class. Say it extends object, it will inherit the methods of the Object class so must have a non-zero size.
There has been discussion on JavaWorld about object size such as Sizeof for Java. Playing around with the example program listed in that article suggests that an empty instance just like an object instance occupies eight bytes.