Bounds from input

Both ends of a loop can come from the input. The loop then runs as many rounds as the numbers say:

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int from = Integer.valueOf(scanner.nextLine());
        int to = Integer.valueOf(scanner.nextLine());
        for (int i = from; i <= to; i++) {
            System.out.println(i);
        }
        System.out.println("End");
    }
}

-2
1

-2
-1
0
1
End

What if the start is bigger than the end, say from 5 to 3? The condition 5 <= 3 is false before the first round, so the loop's block doesn't run at all, and the program goes straight on to End. A loop that runs zero times is normal, and a program should still print something sensible when it happens.