NoClassDefFoundError with my jar-application using Oracle JDBC driver

Posted on 2002-03-22
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)

Question by:AndrewRodionov
  • 3
  • 2
LVL 16

Expert Comment

ID: 6888021
post your CLASSPATH


Author Comment

ID: 6888030
LVL 16

Accepted Solution

heyhey_ earned 100 total points
ID: 6888040

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
        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)

Author Comment

ID: 6888046

Author Comment

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.

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
javap not working 8 58
CSV file parsing thru Java 13 34
eclipse console opening separately 2 29
American Express @Work site and Java 4 24
For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

856 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