Need to enclose MQTTCLient Instance in try catch block

Question

I have recently started learning to work on various communication protocols for IoT. Given below is the line of code I can't get my head around.I try to run the code:

MqttClient Client = new MqttClient(Broker, ClientId, Persistence);

But shows an "Unhandled exception" error. So I fixed it by enclosing it with a try/catch.

 try {
        MqttClient Client = new MqttClient(Broker, ClientId, Persistence);
    } catch (MqttException e) {
        e.printStackTrace();
    }

It actually works but can't understand why the need of this. Thanks in advance.

Answer 1

The instance doesn't need to be surrounded by try/catch, but the constructor invocationdoes, or else needs to be within a method that is declared to throw that exception.

Hope this helps !!