Predict the Output of the following Java program:

class dk2
{
public static void main(String args[])
{
int i=2,k=1;
while (++i<6)
k *= i;
System.out.println(k);
} 
}

60

Working

This table shows the change in values of i and k as while loop iterates:

Notice that System.out.println(k); is not inside while loop. As there are no curly braces so only the statement k *= i; is inside the loop. The statement System.out.println(k); is outside the while loop, it is executed once and prints value of k which is 60 to the console.