HDU 1002 A + B Problem II 大數 Java

import java.math.BigInteger;
import java.util.Scanner;

/*
    大數一般上java吧，懶得寫高精了
 */
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int T = scanner.nextInt();
        for (int i = 0; i < T; i++) {
            System.out.println("Case " + (i + 1) + ":");
            BigInteger a = scanner.nextBigInteger();
            BigInteger b = scanner.nextBigInteger();
            String ans = a + " + " + b + " = " + a.add(b);
            System.out.println(ans);
            if(i < T - 1) System.out.println();
        }
    }
}