【Java学习笔记】参数数量可变的方法

public class Function {
//用“类型...”表示，args自动成为数组
public static int sum(int...args){
int sum = 0;
for(int num:args){
sum += num;
}
return sum;
}
public static void main(String[] args) {
System.out.println(sum(1)); //1
System.out.println(sum(3,5)); //8
System.out.println(sum(3,5,7)); //15
int[] n = {6,51,5,2,5,2,6};
System.out.println(sum(n));//77
}
}