Fastest way to set all values of an array?

Question

I have a char [], and I want to set the value of every index to the same char value.
There is the obvious way to do it (iteration):

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Answer 1

Java Programmer's FAQ Part B Sect 6 suggests:

public static void bytefill(byte[] array, byte value) {
    int len = array.length;
    if (len > 0)
    array[0] = value;
    for (int i = 1; i < len; i += i)
        System.arraycopy( array, 0, array, i,
            ((len - i) < i) ? (len - i) : i);
}

This essentially makes log2(array.length) calls to System.arraycopy which hopefully utilizes an optimized memcpy implementation.

However, is this technique still required on modern Java JITs such as the Oracle/Android JIT?