java - Where does the JLS specify that the result of an addition is int if its operands are of smaller type? -


with reference why getting type mismatch: cannot convert int byte, tried quick search in jls find mentioned result of addition between byte operands automatically widened int.

the best found tutorial, didnt' find in jls.

the conversions chapter not mention addition operator, @ least couldn't find something. additive operators paragraph not mention automatic widening of byte. mentions the type of each of operands of binary - operator must type convertible (§5.1.8) primitive numeric type, nothing widening. , byte numeric data type.

what missing?

you there, in 15.18.2:

binary numeric promotion performed on operands (§5.6.2).


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