basic question

[Praveen]

Hi..All,

This is a question regarding the reference assignment conversion :

Object objRef;
int[] intArray = new int[10];
Object objArray = new Object[3];

Why would this assignment would go through :

objRef = intArray;

and give compile time error on

objArray = intArray;


Regards,
p

 

[Leif Roar Moldskred]

Hi..All,

This is a question regarding the reference assignment conversion :

Object objRef;
int[] intArray = new int[10];
Object objArray = new Object[3];

Why would this assignment would go through :

objRef = intArray;

and give compile time error on

objArray = intArray;

Basically, every array is a subtype of Object, but "array of int" is
not a subtype of "array of Object."

You can assume that the class hiearchy is effectively as below:

___________
| Object |
-----------
^
|
|
___________
| "Array" |
| (abstract)|
-----------
^ ^
| |
/ \
/ \
___________ ___________
| int[] | | Object[] |
----------- -----------

 

[Jezuch]

U¿ytkownik Praveen napisa³:

Object objRef;
int[] intArray = new int[10];
Object objArray = new Object[3];

Did you mean:
Object[] objArray
?
Otherwise...

Why would this assignment would go through :
objRef = intArray;
and give compile time error on
objArray = intArray;

....this is not what's happening