Question

I am reading about the Oracle Java SE 7 Certified Programmer Level 2. I looked at the sample questions on their website and found this one which answer I cannot understand.

import java.util.*; 
public class MyScan { 
   public static void main(String[] args) { 
      String in = "1 a 10 . 100 1000"; 
      Scanner s = new Scanner(in); 
      int accum = 0; 
      for(int x = 0; x < 4; x++) { 
        accum += s.nextInt(); 
      } 
      System.out.println(accum); 
   } 
} 

What is the result?
A) 1
B) 11
C) 111
D) 1111
E) Compilation fails.
F) Class2 has-a
Class1.
G) An exception is thrown at run time

The right answer is F. What does that answer mean?

Answer 1

You would receive an Exception at Run Time.

 java.util.InputMismatchException

It is because, it fails during second iteration when it tries to match a