【hdoj】A + B Problem II（java）

import java.math.BigInteger;
import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int temp,flag=n;
BigInteger a,b,c;
while(n!=0)
{
a=sc.nextBigInteger();
b=sc.nextBigInteger();
c=add(a,b);
temp=flag-n+1;
System.out.println("Case "+temp+":");
System.out.println(a+" + "+b+" = "+c);
n=n-1;
if(n!=0){System.out.println("");}
}
}
public static BigInteger add(BigInteger a,BigInteger b)
{
BigInteger c=a.add(b);
return c;
}
}