How can I solve two errors adding "?useUnicode"?

brkesah :

I am connecting to a MySQL database but I got an error about timezone. So I solved it by adding useLegacyDatetimeCode=false&serverTimezone=UTC:

String url = "jdbc:mysql://" + host + ":" + port + "/" + db_isim + 
 "?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC";

Now I need to add this too: ?useUnicode=true&characterEncoding=utf8

Is there a way for this? (Not very good at English so basic explanation or just the code will be good)

I need to add this code for Turkish characters. I tried adding next to it but the connection went lost.

Eritrean :

Have you tried :

String url = "jdbc:mysql://" + host + ":" + port + "/" + db_isim 
                + "?useUnicode=true&"
                + "useJDBCCompliantTimezoneShift=true&"
                + "useLegacyDatetimeCode=false&"
                + "serverTimezone=UTC&"
                + "characterEncoding=utf8";