Array Vs VarArgs

[Harikrishna Gorrepati]

Hi, The following question is from whizlabs..Why I am getting compile error as mentioned in the comments ?

public class Question30
{
    public static void main(String[] args)
    {
        Integer i[] = {1, 2, 3, 4};
        //Compile Error :The method test(int...) in the type Question30_Array_Ask is not applicable for the arguments (Integer[])
        test(i);
    }

    public static void test(int...s)
    {
        for(int i :s)
        {
            System.out.printf("%d\n", i);
        }
    }
}

[Ram Narayan.M]

Here, the base address of array i.e., first element of array's address referred by "i" is passed as argument in test()...

What the varargs expects is multiple arguments which is of "int" data type...

It has to be passed like

test(1,2,3,4)
(or)
test(1,2,3,4,5)
(or)
Likewise upto n times...

[Sudhakar Sharma]

Harikrishna Gorrepati wrote:Hi, The following question is from whizlabs..Why I am getting compile error as mentioned in the comments ?

public class Question30
{
    public static void main(String[] args)
    {
        Integer i[] = {1, 2, 3, 4};
        //Compile Error :The method test(int...) in the type Question30_Array_Ask is not applicable for the arguments (Integer[])
        test(i);
    }

    public static void test(int...s)
    {
        for(int i :s)
        {
            System.out.printf("%d\n", i);
        }
    }
}

Hi,

Because there is not the matching method signature.
The rule is Integer can be unboxed to an int, but Integer[] cannot be unboxed to an int[].