Java convert byte array to hex byte array [duplicate]

Question

I have a byte array that I want to convert its value in hexadecimal.

byte array = [48, 48, 28, ...]

--->

hex byte array = [30, 30, 1C, ...]

Here is a solution: stackoverflow.com/questions/9655181/… Just don't return a String of the array, but rather the converted array itself — Lennart
– Lennart, Commented Apr 15, 2013 at 10:12
There is no such thing as a 'hex byte array'. Hex is how you view it, print it, report it. Not a real question. — user207421
– user207421, Commented Apr 15, 2013 at 10:15

Marco Forberg · Accepted Answer · 2019-05-09 07:21:10Z

3

This should work. Maybe you have to convert byte to int if its not casted implicitly.

String[] hexArray = new String[byteArray.length];
for(int index = 0; index < byteArray.length; index++) {
    hexArray[index] = Integer.toHexString(byteArray[index]);
    // maybe you have to convert your byte to int before this can be done
    // (cannot check reight now)
}

edited May 9, 2019 at 7:21

answered Apr 15, 2013 at 10:15

Marco Forberg

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1 Comment

Marco Forberg Over a year ago

hexadecial is only the representation. an array of byte will always have value from 0 to 255 and not display as 00 to FF unless you convert it to a String representation like with the Integer.toHexString() method

stinepike · Accepted Answer · 2013-04-15 10:19:40Z

1

check Integer.toHexString method. iT will convert an int to a hex string. so iterate through your array and convert each number.

answered Apr 15, 2013 at 10:19

stinepike

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