hdu 1753 a+b Java Decimal类

import java.util.*;
import java.math.*;

public class Main{
public static void main(String args[]){
Scanner cin=new Scanner(System.in);
BigDecimal a,b;
String c;
while(cin.hasNext()){
a=cin.nextBigDecimal();
b=cin.nextBigDecimal();
a=a.add(b);
c=a.stripTrailingZeros().toPlainString();/*stripTrailingZeros()去掉后缀多余的0，toPlainString()去掉指数形式*/
/*
if(c.startsWith("0."))  //eg:0.1 == .1
c = c.substring(1);
*/
System.out.println(c);
}
}
}