Re: jdbc example: java.lang.NoClassDefFoundError
От | Dave Cramer |
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Тема | Re: jdbc example: java.lang.NoClassDefFoundError |
Дата | |
Msg-id | 004601c16605$28185f00$8201a8c0@inspiron обсуждение исходный текст |
Ответ на | jdbc example: java.lang.NoClassDefFoundError (Neil Zanella <nzanella@cs.mun.ca>) |
Список | pgsql-jdbc |
Neil, Your code looks fine, how are you trying to run this? Is it in a package? Dave -----Original Message----- From: pgsql-jdbc-owner@postgresql.org [mailto:pgsql-jdbc-owner@postgresql.org] On Behalf Of Neil Zanella Sent: November 1, 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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