class a
{}
class b extends a
{}
public class ocast
{
public static void main (String [] args)
{
b b = new b();
a a = b;
try
{
b = (b)a;
}
catch (ClassCastException e)
{
System.out.println(e);
}
a = new a();
try
{
b = (b)a;
}
catch (ClassCastException e)
{
System.out.println(e);
}
}
}