Question

How to convert byte array to hex string in Scala

Answer 1

object ByteArrayToHexString {
  def byteArrayToHexString(byteArray: Array[Byte]): String = {
    byteArray.map(byte => f"$byte%02X").mkString
  }

  def main(args: Array[String]): Unit = {
    // -1 is equivalent to 255 in an unsigned byte
    val byteArray: Array[Byte] = Array(10, 7, 15, 12, 127, 3, -1) 
    
    val hexString = byteArrayToHexString(byteArray)
    
    println(s"Hex String: $hexString")
  }
}


 
/*
run:

Hex String: 0A070F0C7F03FF

*/

 

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