大数加法java版

 1 import java.util.*;
 2 import java.math.BigDecimal;
 3  
 4 public class Numadd{
 5     public static void main(String[] args){
 6         String s1,s2;
 7         Scanner cin = new Scanner(System.in);
 8         s1 = cin.next();
 9         s2 = cin.next();
10         BigDecimal b1 = new BigDecimal(s1);
11         BigDecimal b2 = new BigDecimal(s2);
12         System.out.println(b1.add(b2));
13         cin.close();
14     }
15 }