another instanceof question

[Beda Tsang]

Hi all, for the following codes:


class Fruit{}
class Apple extends Fruit{}
class Orange extends Fruit{}

public class Over
{
public static void main(String [] arg)
{
Apple a=new Apple(); // 1
//Fruit a=new Apple(); //2
System.out.println ( a instanceof Orange) ;

}
}



I would get an compile error where I expected to be false.
If I comment the line 1 and uncomment line 2, I would get the result.
Why is it?

[Kj Reddy]

You can declare same variable name(a) twice, if you declare you will get compilation error.

[Murali Mohan]

Because Class Apple is not in the same class hierarchy line as Orange.

let me know if i am wrong