java 实例，为每一行的输入自动编号

/*例如输入 SY
IN
输出：
1 SY
2 IN
*/
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner scan=new Scanner(System.in);
         int n=1;
        while(scan.hasNext())
            {
            String line = scan.nextLine();
            System.out.println(n+" "+line);
            n++;
        }
    }
}