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Groups > comp.lang.java.programmer > #38874

Re: Does this make sense?

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: Does this make sense?
Date 2019-04-05 12:31 -0400
Organization Aioe.org NNTP Server
Message-ID <q87vu2$7tv$1@gioia.aioe.org> (permalink)
References (2 earlier) <c001151d-044c-4d1b-ad88-0efd923e4433@googlegroups.com> <q85699$oq6$1@dont-email.me> <b8961ec3-eac5-45da-aa5d-11144bcae219@googlegroups.com> <q867p2$gv3$1@gioia.aioe.org> <636ed842-3212-4955-8c81-0a48f162b6b9@googlegroups.com>

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On 4/5/2019 11:39 AM, Eric Douglas wrote:
> On Thursday, April 4, 2019 at 8:33:50 PM UTC-4, Arne Vajhøj wrote:
>>                   return test(constr.subList(1, constr.size()) , un, pw);
>>               } else {
>>                   return "Houston we got a problem";
>>               }
> 
> Interesting solution, I would not have thought to use recursion for that but it works.

You could also use a loop.

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.List;

public class MultiTry {
     public static String test(List<String> constr, String un, String pw) {
         for(String constr1 : constr) {
             try(Connection con = DriverManager.getConnection(constr1, 
un, pw)) {
                 // do something with connection
                 return constr1 + " worked";
             } catch (SQLException e) {
                 // nothing => go next connection string
             }
         }
         return "Houston we got a problem";
     }
     public static void main(String[] args) {
         String res = 
test(Arrays.asList("jdbc:mysql://localhost:3308/Test", 
"jdbc:mysql://localhost:3307/Test", "jdbc:mysql://localhost:3306/Test"), 
"root", "");
         System.out.println(res);
     }
}

Arne

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Thread

Does this make sense? Eric Douglas <e.d.programmer@gmail.com> - 2019-04-04 05:22 -0700
  Re: Does this make sense? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-04-04 09:03 -0400
    Re: Does this make sense? Eric Douglas <e.d.programmer@gmail.com> - 2019-04-04 07:02 -0700
      Re: Does this make sense? Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-04-04 11:01 -0400
        Re: Does this make sense? Eric Douglas <e.d.programmer@gmail.com> - 2019-04-04 08:21 -0700
        Re: Does this make sense? Eric Douglas <e.d.programmer@gmail.com> - 2019-04-04 11:45 -0700
          Re: Does this make sense? Arne Vajhøj <arne@vajhoej.dk> - 2019-04-04 20:33 -0400
            Re: Does this make sense? Eric Douglas <e.d.programmer@gmail.com> - 2019-04-05 08:39 -0700
              Re: Does this make sense? Arne Vajhøj <arne@vajhoej.dk> - 2019-04-05 12:31 -0400
              Re: Does this make sense? bursejan@gmail.com - 2019-04-05 10:53 -0700
                Re: Does this make sense? bursejan@gmail.com - 2019-04-05 10:57 -0700
                Re: Does this make sense? bursejan@gmail.com - 2019-04-05 11:02 -0700
                Re: Does this make sense? bursejan@gmail.com - 2019-04-05 11:13 -0700
          Re: Does this make sense? Patrick Roemer <sangamon@netcologne.de> - 2019-04-05 17:43 +0200
            Re: Does this make sense? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2019-04-07 22:14 +0200
      Re: Does this make sense? Andreas Leitgeb <avl@logic.at> - 2019-04-04 15:15 +0000

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