What will be the output of the following program?
public class SmileyTest
{
public static void main(String[] args)
{
Smile a = new Smile();
talk(a);
a.frown();
ISmile a1 = new ISmile();
a1.smile();
}
static void talk(ISmile ia1)
{
ia1.smile();
System.out.print(" :-0 ");
}
}
class ISmile
{
void smile()
{
smile();
}
}
class Smile extends ISmile
{
void smile()
{
System.out.print(" :-) ");
}
public void frown()
{
ISmile a1 = new Smile();
a1.smile();
System.out.print(" :-[ ");
}
}
Interfaces920
