From: | "Kevin W(dot) Nikiforuk" <kwn(at)sethanon(dot)remote(dot)ualberta(dot)ca> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | java.lang.NullPointerException |
Date: | 1998-05-20 19:09:22 |
Message-ID: | Pine.LNX.3.95.980520125601.5353A-100000@sethanon |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
-----BEGIN PGP SIGNED MESSAGE-----
Forgive me if this is the wrong mailing list for this, but it seemed the
most appropriate.
I've got a database up and running under PostgreSQL called kwn. When I
try to use the following Java code to connect to it:
try {
Class.forName("postgresql.Driver");
}
catch (Exception e) {
System.out.println(e);
}
postgresql.Connection conn = null;
try {
conn =
(postgresql.Connection)DriverManager.getConnection("jdbc:postgresql:kwn");
}
catch (Exception e) {
System.out.println(e);
e.printStackTrace();
}
I get the following stack trace from the second try block:
java.lang.NullPointerException:
java.lang.NullPointerException:
at java.lang.String.<init>(String.java)
at postgresql.Connection.<init>(Connection.java:71)
at postgresql.Driver.connect(Driver.java:87)
at java.sql.DriverManager.getConnection(DriverManager.java:91)
at java.sql.DriverManager.getConnection(DriverManager.java:149)
at CookBook.<init>(CookBook.java:165)
at CookBook.main(CookBook.java:335)
==============================================================================
The program was compiled with the command line:
javac -d . -classpath /usr/share/java/postgresql.jar:/usr/lib/jdk-1.1.3/classes.zip:. test.java
and my CLASSPATH env variable is:
/usr/lib/jdk-1.1.3/lib/classes.zip:/usr/share/java/postgresql.jar:.
As far as I can tell, the Class.forName() call doesn't throw any
exceptions.
Ideas, hints or suggestions greatly appreciated.
Kevin
- --
Kevin Nikiforuk knikifor(at)gpu(dot)srv(dot)ualberta(dot)ca
- ----------------------------------------------------------------------------
http://pgp5.ai.mit.edu/pks-commands-beta.html for my PGP public key
-----BEGIN PGP SIGNATURE-----
Version: 2.6.2
Comment: Processed by mkpgp2.1, a Pine/PGP interface.
iQCVAwUBNWMqUMsSwbLUdSRVAQHRoQP/U+JxivVNCxS3t4vPAtZyLTkS7TTceh1v
e3da72tXLmNIODfWcuo8f19p4yoIeOUjOSu13HlKgO0s5lX94dbDe6aB4fly/tGu
ufVB2jdlm8KUT6LInfnx84eQj9BdT82NfWC9waS5I/Q9b+YybLyzwL65tWI8L/8z
BmkG9Byrtoc=
=mv4I
-----END PGP SIGNATURE-----
From | Date | Subject | |
---|---|---|---|
Next Message | Kevin W. Nikiforuk | 1998-05-20 21:37:57 | Re: [GENERAL] java.lang.NullPointerException |
Previous Message | Peter Mount | 1998-05-20 18:37:42 | Re: [GENERAL] About Deleting Large Objects |