I cannot find any method like
char c = \'c\'; preparedStatement.setChar(1, c);
char c = \'c\';
preparedStatement.setChar(1, c);
How to set character to a prepared statement?
Use setString() to set the variable.
To get it back use getString() and assuming it is not null do something like this to get the character:
getString("your_column").charAt(0);