Re: jdbc example: java.lang.NoClassDefFoundError
От | Nick Fankhauser |
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Тема | Re: jdbc example: java.lang.NoClassDefFoundError |
Дата | |
Msg-id | NEBBLAAHGLEEPCGOBHDGGEPMDNAA.nickf@ontko.com обсуждение исходный текст |
Ответ на | jdbc example: java.lang.NoClassDefFoundError (Neil Zanella <nzanella@cs.mun.ca>) |
Список | pgsql-jdbc |
Neil- The code looks pretty good to me. Try looking here for a couple of ideas about what can cause this error: http://www.fankhausers.com/postgresql/jdbc/#classnotfound -Nick -------------------------------------------------------------------------- Nick Fankhauser nickf@ontko.com Phone 1.765.935.4283 Fax 1.765.962.9788 Ray Ontko & Co. Software Consulting Services http://www.ontko.com/ > -----Original Message----- > From: pgsql-jdbc-owner@postgresql.org > [mailto:pgsql-jdbc-owner@postgresql.org]On Behalf Of Neil Zanella > Sent: Thursday, November 01, 2001 11:16 PM > To: PostgreSQL JDBC List > Subject: [JDBC] jdbc example: java.lang.NoClassDefFoundError > > > > Hello, > > I have been trying to access the postgresql mailing list archives online > but the archives.postgresql.org server as well as a bunch of other > postgresql servers appear to be down and the lists are not (yet) > archived at <http://www.mail-archive.com/lists.html>. > > The problem I am experiencing is I have Red Hat 7.1 installed with the > postgresql 7.0 stuff including postgresql-jdbc. I have set my CLASSPATH > to point to /usr/lib/pgsql/jdbc7.0-1.2.jar and have also installed JDK > 1.3.1 and updated the PATH variable accordingly. However I am getting > the following error when trying to access a simple postgresql databse. > Any ideas of what might have gone wrong? > > Exception in thread "main" java.lang.NoClassDefFoundError: TestPostgreSQL > > Thanks, > > Neil > > sample code generating the error: > > import java.sql.*; > > class TestPostgreSQL { > public static void main(String arg[]) throws SQLException, > ClassNotFoundException { > > String db_driver = "org.postgresql.Driver"; > String db_site = "jdbc:postgresql:joedb"; > String db_user = "joe"; > String db_pass = "doe"; > > Class.forName(db_driver); > Connection connection = DriverManager.getConnection(db_site, db_user, > db_pass); > Statement statement = connection.createStatement(); > ResultSet resultset = statement.executeQuery("SELECT * FROM > joetable"); > System.out.println(resultset.getString("joe_column")); > > } > } > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) >
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