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Learning what CLASSPATH is about
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27/11/2003 00:04:18
 
 
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Forum:
Java
Catégorie:
Bases de données
Titre:
Learning what CLASSPATH is about
Divers
Thread ID:
00853953
Message ID:
00853953
Vues:
50
Hi,
The good news is I got Postgres working. The bad news is took me 3 hours. The problem lies in the use of "CLASSPATH" environment variable and the fact I could not figure out how to run a simple program from the Borland IDE. I still don't know how to run a program (like hello world) that uses a single file. Borland is always expecting that I have a project and a app file that contains a "jframe". In other words a program that uses swing.

Anyway, back to the Postgres thing. I downloaded a sample java program to access Postgres. I then used a command line to compile the program. I recieved no error messages. But the program would not run because it could not find the required postgres jdbc driver. I finally found an email message (google) that suggested "export CLASSPATH=.:postgres.jar". The Postgres.jar is the driver and is in the same folder as the program. That worked. But of course that does not work for all programs. That's when I discovered that I could place the driver into the "usr/lib/java/lib/jre/lib/ext" folder. Believe me for a novice this was not easy information to find. I'm using SUSE 8.2 and that's where my runtime is located. I at first assumed that the file should go into the SDK but that does not work. It still makes sense but I could not make it work. So maybe that will help others (Leland).
John
John Fabiani
Woodland, CA
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