Re: pgsql-jdbc and Java

I stored my driver in the lib directory of the JDK.

but I manually moved the driver packages in the packages tree of my IDE, and it seems to be working correctly.

Thanks.

Oliver Jowett <oliver(at)opencloud(dot)com> a écrit :
abdelkader belkadi wrote:

> D:\java -jar projectpath/projectname.jar
> the following error is generated:
> Class not found !
> java.lang.ClassNotFoundException: org.postgresql.Driver

> The error disapears if I don't call the method that connects to the
> database, which means that their is no CLASSPATH problem.

A ClassNotFoundException means you *do* have a classpath problem,
whether you like it or not. That exception means that the JVM cannot
find the PostgreSQL JDBC driver class, i.e. it's not in the classpath.

Using -jar has the unexpected behaviour that it makes the JVM completely
ignore any CLASSPATH environment setting. So unless projectname.jar
includes the postgresql driver itself, or references it via manifest
Class-Path, this isn't going to work.

Try an explicit classname and classpath (that includes both the driver
jar and projectname.jar) instead of using -jar.

(also, doesn't the win32/dos JVM expect paths in backslash form? you've
got forward slashes above)

-O

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