troubleshooting Question

Truncate a byte array?

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adg asked on
6 Comments2 Solutions5869 ViewsLast Modified:
I need to truncate a byte array. For example the array has 100 elements but only the first 3 are used.  So I wrote this method to truncate the array.  The copy is working correctly (b2 looks good).  But when the calling method gets the array it only has one element in it.

    // return new array by truncating passed array.
    private static byte[] Truncate(byte[] b1, int nextAvailable)
        byte[] b2 = new byte[nextAvailable];
        System.arraycopy(b1, 0, b2, 0, nextAvailable);
        return b2; // b2 looks ok here

I am calling like this:

byte[] b = Truncate(result, nextAvailable); // b only contains element zero here.

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