Doubts with Java Primitive Data type (Byte and Int)

Question

When i do the below code, it ask me for casting the value on right side ?

byte myByteTestValue = Byte.MAX_VALUE + 1;

When i do the below code, it didn't ask me for casting the value on right side ?

int myIntTestValue = Integer.MAX_VALUE + 1;

why this is happening, anyone can explain ?

Answer 1

The + 1 is treated as an Integer which is larger than a byte. Cast it and the warning goes away.

byte myByteTestValue = Byte.MAX_VALUE + (byte)1;