Hi !

I have a code which uses a package and 2 classes defiend by the vendor software :

package a.examples.b ;
 
import com.ab.cd.gff.rrr.model.*;
import com.ab.cde.khh.vocab.*;
 
 
public class Tutorial01 extends Object {
    public static void main (String args[]) 
// the rest of the code ...

my source file , Tutorial01 , is in C:\SWRoot\examples\jjj\example1\rrr

I have located the com.ab folder to be in the following folder:
C:\SWRoot\src

I have added the C:\SWRoot\src to my environment variables (I am using windows xp control panel --> system properties to do that)

I have also added the rest of the jar files as instructed by the vendor to my environment variables.

When I run javac Tutorial01.java , class file is created without problems.

But When I try java Tutorial01 , I get error :
Exception in thread "main" java.lang.NoClassDefFoundError

Could you please help me ?
Most appreciated
Daniel

 

 

Hmm... Adding the source directory to the classpath will not help. It is source code after all and has not been compiled itself.


That's more like it. I would expect these classes to exist in a jar file.


Be sure that when you run the java command you specify the fully qualified name of the class you are attempting to run. This includes the packages if any.

java a.examples.b.Tutorial01

 

 

First of all I would like to thank you for your reply.

However the problem still remanins :(

My current directory is the same as Tutorial01.java ()

I have tried :

1. javac Tutorial01.java
Class is created , I just get 4 notes , like recompile with -xlint , or * uses or overrides a depreciated API.

2. I try java a.examples.b.Tutorial01 , and get error Exception in thread "main" java.lang.NoClassDefFoundError.

I also tried :
1. javac a.examples.b.Tutorial01 , I get error : can not read a.examples.b.Tutorial01.java

Could you please advise ?

Thank you

 

 

You are having very common and very basic problems beginning. I would suggest you find someone who knows how to program in Java to tutor you at least on compilation and execution. And, at the very least, go through the "Getting Started" tutorial

http://java.sun.com/docs/books/tutorial/getStarted/index.html

 

 

I agree with the previous poster. It would help you to review the tutorial and seek out additional help with the basics.

In the meantime..... Use a destination directory when you compile classes that exist in another package besides the default package. So first create a directory for the destination code called "classes" in your working directory, where Tutorial01.java exists. Then you can specify this destination directory using the 'd' option with the javac command.

javac -d classes Tutorial01.java

Notice that the compiler generates a directory structure which mirrors the package structure of the class being compiled. Then include the directory classes on the classpath, preferably using the 'classpath' option, but you can also do this by setting the System properties environment variable. Note that using the classpath option with the java command will override any system wide values you have set for the classpath. So you will need to include the path to the jar files in addition to the classes directory.

More information about using options with the javac command can be found here..
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/javac.html#options