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In my byte array I have the hash values of a message which consists of some negative values and also positive values. Positive values are being printed easily by using the (char)byte[i] statement.
Now how can I get the negative value?
Well if you’re happy printing it in decimal, you could just make it positive by masking:
If you’re printing out a hash though, it would be more conventional to use hex. There are plenty of other questions on Stack Overflow addressing converting binary data to a hex string in Java.