实现数据以EOF结束

通过Scanner类里的hasNext（）实现。以下是Example：

import java.util.Scanner;;

public class Main 
{
	public static void main(String[] args) 
	{
		Scanner cin = new Scanner(System.in);
		int a, b;
		
		while (cin.hasNext())
		{
			a = cin.nextInt();
			b = cin.nextInt();
			System.out.println(a % b);
		}
	}

}

也可以参考：http://www.javadocexamples.com/java/util/Scanner/hasNext().html