public void sum(int ...nums){
        int sum = 0;
        for(int i:nums)
        {
            sum +=i;
        }
        System.out.println(sum);
    }
    
    @Test
    public void testSum()
    {
        sum(1,2,3,4,5);
    }

@Test
    public void testSum()
    {
        int arr[] ={1,2,3,4,5};
        sum(arr);
    }

@Test
    public void testSum()
    {
        List list =Arrays.asList("1","2","3","4");
        System.out.println(list);
    }

//结果是
// [1, 2, 3, 4]

@Test
    public void testSum()
    {
        List list =Arrays.asList(1,2,3,4);
        System.out.println(list);
    }
//结果是
// [1, 2, 3, 4]


@Test
    public void testSum()
    {
        int nums[] = {1,2,3,4,5};
        List list =Arrays.asList(nums);
        System.out.println(list);
    }
//结果是
// [[I@2866bb78]