Question $3$

The C$/$C$++$ object size is the total number of bytes required by each data members in a given object. For instance, class MClass $\{$ double a; int b; int c $\}$ needs $8+4+4=16$ bytes when it is instantiated. However, Java objects need an $8-10$ times larger space than the corresponding C$/$C$++$ objects.

Q$3-1.$ Why?