可变长参数

可变长参数本质上是数组
`package jiChuLianXi;

public class CanShu {
public static void main(String[] args) {
CanShu canShu = new CanShu();
canShu.test(8);
}

public void test(int... a){
System.out.println(a[0]);
}
}
`