Inheritance
- What is the outcome of below code Box class?
class Shape
{
public int area()
{
return 1;
}
}
class Square extends Shape
{
public int area()
{
return 2;
}
}
class Rectangle extends Shape
{
public int area()
{
return 3;
}
}
public class Box
{
public static void main(String[] args)
{
Shape obj = new Shape();
Square obj0 = new Square();
Rectangle obj1 = new Rectangle();
obj1 = (Rectangle)obj0;
System.out.println(obj0.area());
}
}
-
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NA
Correct Option: A
We cannot assign one child class object to another child class variable.
Box.java:32: error: incompatible types: Square cannot be converted to Rectangle
obj1 = (Rectangle)obj0;
^
1 error
