HDU 1000 java整数输入

import java.util.*;  
public class Main {
 /**  * @param args  */ public static int add(int i, int j){  //static int sum = 0;  //sum += (j+i);  return i+j; } public static void main(String[] args) {   int a,b;         int sum = 0;         Scanner sc = new Scanner(System.in);          while(sc.hasNext())         {          a = Integer.parseInt(sc.next()); //输入整数                b = Integer.parseInt(sc.next());             //a = sc.nextInt(); //输入整数           //b = sc.nextInt();           sum = add(a,b); // 调用函数        System.out.println(sum); // 输出结果         } }}