One byte integer support

Is there any way to support one byte integers? I am
using JDBC and would like to use setByte() method to
populate values of a single-byte integer valued
column. I tried defining the column as character(1),
but I get the error message:

Exception in thread "main"
org.postgresql.util.PSQLException: ERROR: value too
long for type character(1)

I don't see how a byte is too long for character(1).
Is there any data type like MySQL's tinyint?




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