ClassCastException的真实示例

Question

I was asked in an interview to give an example of a ClassCastException for which I gave the below example

class X{}
class Y extends X{}
class Z extends X{}
Y y=new Y();
Z z=new z();

(X)y is possible (X)z is possible

Z(y) and (Y)z will throw a ClassCastException. Then the interview asked me to give real world example for which I said both boat and table are made up of wood

table extends wood boat extends wood but you can not use table for fishing similarily you can not use table to sir or stand

I want to know if my examples are right or not?

Answer 1

I would not have accepted that as an answer because a boat/table is not a subtype of wood.
A subtype of wood would be Oak or Cherry.

Answer 2

z = (Z)y will not throw a ClassCastException - it will never compile.

The following will compile and throw a ClassCastException ( java.lang.ClassCastException: [LXXX$Y; cannot be cast to [LXXX$Z; ) on the second line

    X[] xx = new Y[1];
    Z[] zz = (Z[]) xx;

In the same spirit

   Object obj  = new Integer(0);
   String str = (String) obj; // class cast exception here