Board.java won't compile...Un

[kpolleck]

When first compiling the java classes, I got an error related to uncaught Exceptions in Board.java. I don't quite understand how this worked for anyone as it is.

To fix this, I added try/catch code around line 91 to:

I2CBus bus = null;
try {
bus = I2CFactory.getInstance(busId);
} catch (Exception e) {
System.out.println(e);
}
device = bus.getDevice(ADDRESS);

[DexterInd]

@kpolleck thanks for sharing the fix you have here. Could you submit a PR for this? Also, what version of the operating system are you using; Raspbian or Rasbian for Robots?

[marcellobarile]

hi @kpolleck,
in addition, I'd also like to know something more about your environment; Java version and pi4j version would helps.

Regards

[kpolleck]

Thanks. This seems like a coding / compling problem more than an environment problem. It appears from http://pi4j.com/apidocs/com/pi4j/io/i2c/I2CFactory.html that I2CBus throws an "UnsupportedBusNumberException"...

public static I2CBus getInstance(int busNumber)
throws I2CFactory.UnsupportedBusNumberException,
IOException

...and UnsuportedBuxNumber Exception extends Exception...

public static class I2CFactory.UnsupportedBusNumberException
extends Exception

...but neither UnsupportedBusNumberException nor Exception are thrown or passed to higher levels...

public Board() throws IOException, InterruptedException

Thus, this appears to be purely a compile-time problem between Board.java and I2CFactory.