Byte to Integer why Number changes

Question

Why the number changes from byte to integer or from short to byte to integer?

Here the code:

public class TypeCasting {
    public static void main ( String [] args ) {
        
        short c = 292;
        int d = (byte) c;
        
        System.out.println(d); // 36

    }
}

I was thinking of answering along the lines of 'it wraps around to negative' until I saw the above comment and realized it's beyond negative wrapping and wraps around completely. — Mark Jeronimus, Jan 08 '21 at 13:35

score 1 · Answer 1 · answered Jan 08 '21 at 13:45

1

292 = 0001 0010 0100
36  = 0000 0010 0100

Change 292 from Short to a Byte removes the left-hand bits (the first 4). When you re-cast it to an Int those bits are now lost so you will still only remain with 36.

answered Jan 08 '21 at 13:45

Detritus

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Byte to Integer why Number changes

1 Answers1