Java: Byte addition, why does b += 1 work but b = b + 1 is converted into integer?

Asked Feb 07 '17 at 19:24

Active Feb 09 '17 at 01:41

Viewed 202 times

Went through this StackOverflow answer explaining how java converts all boolean, byte, char and short data types into int .

This does not explain whyin byte b, b += 1 works but b = b + 1 throws an error, even b = b + (byte)1 and b = (byte)b + (byte)1 throws the same error.

edited May 23 '17 at 12:24

Community

asked Feb 07 '17 at 19:24

Arpit Agarwal

I think you have to use `b = (byte)(b+1)` instead of `b = (byte)b + (byte)1` to prevent the error. (also please specify in the question that `b` is a `byte`) – user41805 Feb 07 '17 at 19:26
You need to do `b = (byte)(b + 1);` to mimic `b += 1;` – 4castle Feb 07 '17 at 19:29
but why does b = b + 1 not work and b += 1 does? – Arpit Agarwal Feb 09 '17 at 01:41

Java: Byte addition, why does b += 1 work but b = b + 1 is converted into integer?

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