Java 可变参数

package Object_Oriented;




public class Test {

    public static void main(String[] args) {
            int result = sum(1,2,3,4,5,6);
        System.out.println(result);
    }

    public static int sum(int ...arr){
        int sum = 0;
        for (int i : arr) {
            sum += i;
        }
        return sum;
    }
    public static String sumsum(String a,int...arr){
        int sum = 0;
        for(int i:arr){
            sum+=i;
        }
        return a+sum;
    }
}