Compiler error : reference to call ambiguous

Case 1

static void call(Integer i) {
    System.out.println("hi" + i);
}

static void call(int i) {
    System.out.println("hello" + i);
}

public static void main(String... args) {
    call(10);
}

Output of Case 1 : hello10

Case 2

static void call(Integer... i) {
    System.out.println("hi" + i);
}

static void call(int... i) {
    System.out.println("hello" + i);
}

public static void main(String... args) {
    call(10);
}

Shows compilation error reference to call ambiguous. But, I was unable to understand. Why ? But, when I commented out any of the call() methods from Case 2, then It works fine. Can anyone help me to understand, what is happening here ?