Solved

NoClassDefFoundError with my jar-application using Oracle JDBC driver

Posted on 2002-03-22
5
569 Views
Last Modified: 2013-11-23
Hi ppl,

There's an application uses Oracle JDBC driver. When I run it  as .class-files thru java <mypackage.myMainClass> it works fine. Now I've made a jar-version of my application. But when I run it as java -jar <myjar> I've got Exception in thread "main" java.lang.NoClassDefFoundError: oracle/jdbc/driver/OracleDriver

My CLASSPATH is the same and it's correct. I'm not sure there's a problem with my jar file, Oracle JDBC driver or something else.

Just FYI:
J2SDK 1.4.0 under Windows XP
Oracle JDBC drivers (versions 8.1.7 and 9.0.1)

Andrew.
0
Comment
Question by:AndrewRodionov
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 16

Expert Comment

by:heyhey_
ID: 6888021
post your CLASSPATH

0
 
LVL 2

Author Comment

by:AndrewRodionov
ID: 6888030
C:\PROJECTS>echo %CLASSPATH%
.;C:\ORACLE\8.1.7\jdbc\lib\classes12.jar;C:\PROGRA~1\freemarker\lib\freemarker.jar
0
 
LVL 16

Accepted Solution

by:
heyhey_ earned 100 total points
ID: 6888040
http://java.sun.com/j2se/1.3/docs/tooldocs/solaris/java.html


-jar
Execute a program encapsulated in a JAR file. The first
     argument is the name of a JAR file instead of a startup
     class name. In order for this option to work, the manifest of
        the JAR file must contain a line of the form
        Main-Class: classname.
        Here, classname identifies the class having the
        public static void main(String[] args) method that serves as your application's starting point. See
        the Jar tool reference page and
        the Jar trail of the
        Java
        Tutorial for information about working with Jar files and
        Jar-file manifests.
     
When you use this option, the
        JAR file is the source of all user classes, and other user class
        path settings are ignored.
       

so you have to put all needed classes inside the same .jar file (or use different startup method)
0
 
LVL 2

Author Comment

by:AndrewRodionov
ID: 6888046
C:\PROJECTS>echo %CLASSPATH%
.;C:\ORACLE\8.1.7\jdbc\lib\classes12.jar;C:\PROGRA~1\freemarker\lib\freemarker.jar
0
 
LVL 2

Author Comment

by:AndrewRodionov
ID: 6888069
I see.
I've found an info how classes are found. Here is a quote: "...The JAR archive specified by the -jar option, which overrides all other values. If this option is used, all user classes come from the specified archive."

Terrible... Anyway, thanks.
Andrew.
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
The viewer will learn how to implement Singleton Design Pattern in Java.
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question