Q. What will be the output of the following Java program?
interface calculate
{
void cal(int item);
}
class display implements calculate
{
int x;
public void cal(int item)
{
x = item * item;
}
}
class interfaces
{
public static void main(String args[])
{
display arr = new display;
arr.x = 0;
arr.cal(2);
System.out.print(arr.x);
}
}