Can someone please explain the error in this simple program?

Question

import java.util.Scanner;
public class First
{
public static void main(String[] args)
{
int num;
Scanner in = new Scanner(System.in);
System.out.println("Enter the number");
num= in.nextInt();
System.out.print("You entered " +num);
}
}
Output
Enter the number
Warning\Error
Exception in thread "main" java.util.NoSuchElementException at
java.util.Scanner.throwFor(Scanner.java) at
java.util.Scanner.next(Scanner.java) at
java.util.Scanner.nextInt(Scanner.)

Answer 1

//i don't think there is any error in the program run it again , might some connection problem
//its working fine ... i checked ☺

Answer 2

about your code, i did similars yesterday and i had a dubt. how we can controll that input is of the right tipe and not for example a letter?

Answer 3

@david ... for that u can use try and catch block ...

hope it helps ☺

Answer 4

sometimes the IDE run the last project and cause problems . Try again. Also for me your code is right.