Casting of integer to byte

Question

when I ran the following code -
int a=130;
byte b= (byte) a;
System. out. println(b);
//Output. -126.
Can anyone explain how?

Answer 1

It seems that the byte type has a range of -128 to 127, as it is signed. So when you assign a number 130 to a byte variable, the variable undergoes overflow and for 128 the output moves to the highest negative number, -128. So when the input is 130, the number overflows to -126 and thus you get the output -126.

Answer 2

Thanks Kinshuk....