Narrowing type conversion in java -


this question has answer here:

i learning java , new programming. trying understand happening behind scenes in code:

short c = 234; byte d = (byte) c; system.out.println(d);

the output -22. can explain me magic happening behind scenes?

the number 234 in binary ‭11101010‬.

although number fits in 8 bits, byte in java signed, largest possible byte value in java 127. , when significant (leftmost) bit set, means "negative number", number negative.

now, might wonder why number -22 when 1101010 not 22. answer can found studying two's complement representation of numbers.

here wikipedia article it: https://en.wikipedia.org/wiki/two's_complement


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