Java: int array initializes with nonzero elements

Question

According to the JLS, an int array should be filled by zeros just after initialization. However, I am faced with a situation where it is not. Such a behavior occurs

Answer 1

I made some change in your code. It's not a problem of Integer overflow. See the code, it throws an exception at runtime

    int[] a;
    int n = 0;
    for (int i = 0; i < 100000000; ++i) {
        a = new int[10];
        for (int f : a) {
            if (f != 0) {
                throw new RuntimeException("Array just after allocation: " + Arrays.toString(a));
            }
        }
        for (int ii = 0, len = a.length; ii < len; ii++)
            a[ii] = 0;
        for (int j = 0; j < a.length; ++j)
            a[j] = Integer.MAX_VALUE - 1;
        for (int j = 0; j < a.length; ++j)
            n++;
    }