Convert float[] to byte[] to float[] again

Question

So what I\'m trying to do here is get a float[], convert it to byte[], send it through the network as a datagram packet and then convert it back to

Answer 1

Use Float.floatToIntBits() to extract the bit-value of the float as an integer, then use BigInteger.toByteArray() to make a byte[]. This can be reversed using the BigInteger constructor that takes a byte[] argument, and then Float.intBitsToFloat().

Answer 2

This is more for my future reference than anything else.

public static byte[] floatToByte(float[] input) {
    byte[] ret = new byte[input.length*4];
    for (int x = 0; x < input.length; x++) {
        ByteBuffer.wrap(ret, x*4, 4).putFloat(input[x]);
    }
    return ret;
}

public static float[] byteToFloat(byte[] input) {
    float[] ret = new float[input.length/4];
    for (int x = 0; x < input.length; x+=4) {
        ret[x/4] = ByteBuffer.wrap(input, x, 4).getFloat();
    }
    return ret;
}

Can be reduced to a single line like https://stackoverflow.com/a/44104399/322017.