how to convert a byte array to string in python

# utf-8 is used here because it is a very common encoding, but you
# need to use the encoding your data is actually in.
bytes = b'abcde'
bytes.decode("utf-8") 
'abcde'

byte[] byteArray1 = { 80, 65, 78, 75, 65, 74 };
String str = new String(byteArray1, 0, 3, StandardCharsets.UTF_8);