Java扫描器nextInt（）要求输入两次

Question

I've written the following simple program to read an integer from the console:

import java.util.Scanner;

public class InputCheck {

    public static void main(String[] args) {
        int n;
        Scanner in = new Scanner(System.in);

        System.out.println("Enter value of n:");
        n = in.nextInt();

        System.out.println("Value of n is: " + n);
    }
}

But I have to enter two inputs for the scanner to read it, even though only the first input is considered. This is the output in the console:

Enter value of n:
5
1
Value of n is: 5

I've seen a lot of similar questions, but none of them addressed this particular problem.

I know I can do nextLine() and then do a parseInt but I really want to know what I'm doing wrong here.

Thanks in advance.

Edit: A lot of questions being asked about the code. That is the exact code. Also I can confirm that I have observed the same behavior on Eclipse Juno and Kepler. Check here: i44.tinypic.com/2h83e52.png

Also compile and ran the program outside of Eclipse and still observing the same behavior. I'm using Java version 1.6.0. Could this be related to that?

Answer 1

可能是您正在Eclipse中运行其他文件而不是此文件。