Java: Convert from BigInteger to byte
Use Number.byteValue:
BigInteger bigInt = ...
byte b = bigInt.byteValue()Note that this simply discards all but the lowest 8 bits. If the BigInteger is outside of the range −128…127 the conversion my have unexpected results.
| BigInteger | byteValue() |
|---|---|
| 100 | 100 |
| 127 | 127 |
| 128 | −128 |
| 129 | −127 |
| 256 | 0 |
| 1,000 | −24 |
| −1,000 | 24 |
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