遍历字节数组-Java

Question

I would like to try and loop through this following byte array:

public byte[] mFFTBytes;

How would I go about doing this in java with a for loop?

Thanks in advance!

Answer 1

First of all you need to instantiate your array because you will have null pointer exceptions all over the place.

Then you can use a for each loop

for(byte b : mFFTBytes){
    System.out.println(b);
}

Answer 2

I am not sure if I understand well what you are asking for. Going through any array in Java is quite trivial action like:

        for (byte myByte: mFFTBytes) {
            //do something with myByte
        }

or

        for (int i=0;i<mFFTBytes.length;i++) {
            //do something with mFFTBytes[i]
        }

The latter should be faster, but for a vast majority of applications is does not matter much.