By Alvin Alexander. Last updated: November 11, 2018
If you need to convert an array of bytes to a hex string in Scala, I can confirm that this code works:
def convertBytesToHex(bytes: Seq[Byte]): String = { val sb = new StringBuilder for (b <- bytes) { sb.append(String.format("%02x", Byte.box(b))) } sb.toString }
I just used this code as part of a checksum algorithm (SHA-1, SHA-256, etc.), and I tested it against command line checksum commands to verify that it works properly.
Technically this code can convert any sort of sequence of bytes in Scala into a hex string, including a Seq, List, Vector, Array, etc.