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you also need to add the folder in which you are keeping your java 
source files and export that..

hope you have fun with Java

chanoch
  ----- Original Message -----
  From: armineh nazarian
  To: Professional Java
  Sent: Friday, June 07, 2002 2:15 AM
  Subject: [pro_java] exception in thread "main"


  I am new to Java. I successfully installed Java 2 standard edition on 
my linux 7.1 box (kernel 2.4.2). I can compile with no errors but I get 
the following runtime error no matter what program I run. The same 
program compiles and runs in MS windows with no problem:

  Here is one of the the sample programs that I run:

  public class Test
  {
     public static void main(String[] args)
     {
        System.out.println("Hello world");
     }
  }

  exception in thread "main" java.lang.noclassdeffound error

  I have the following settings in the /etc/profile file.
  PATH=3D/usr/java/j2sdk1.4.0_01/bin:$PATH
  export PATH
  export JAVA_HOME=3D/usr/java/j2sdk1.4.0_01
  export 
CLASSPATH=3D/usr/java/java/j2sdk1.4.0_01/lib/tools.jar:/usr/java/j2sdk1.4
.0_01/jre/lib/rt.jar

  I see these settings correctly when I type set at the prompt.
  I got the JAVA installation instructions from 
http://www.yolinux.com/TUTORIALS/LinuxTutorialTomcat.html#DATABASE

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