I got in front of this problem while I was subscribing for data coming from an MQTT source.
Using eclipse paho library I was writing the received message:
Topic arrived 1
Message arrived [B@a8e13ab
Very starnge result…
the two lines of code were:
System.out.println("Topic arrived " + string);
System.out.println("Message arrived " + mm.getPayload());
So the problem was in the second line:
bytes had to be converted in string format with the correct encoding, really simple:
System.out.println("Topic arrived " + string);
System.out.println("Message arrived " + mm.getPayload());
System.out.println("Message arrived " + new String(mm.getPayload(), "UTF-8"));
and the result is:
Topic arrived 1
Message arrived [B@a8e13ab
Message arrived myMessage
Gg1