Answer Posted / aravind

Please find the difference between DownCasting and Upcasting
with the beloe example

Base Class is Shape

public class Shape
{
protected int m_xpos;
protected int m_ypos;
public Shape()
{
}
public Shape(int x, int y)
{
m_xpos = x;
m_ypos = y;
}
}

Circle class which extends Shape class

public class Circle extends Shape
{
public Circle()
{
}
public Circle(int x, int y)
{
}
}


Main Class:

class CastingExample{
public static void main(String[] args) {
Shape s = new Circle(); // Upcasting
Circle c;
c = (Circle)s; // Downcasting explicitly we have to
do,this is unsafe.
}
}

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