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Posted to java-user@lucene.apache.org by Paul Rogers <pa...@gmail.com> on 2010/03/04 18:49:23 UTC
Problem running demo's - java classes not found
Dear All
Hope someone can help. I'm trying to run the demo's that came with Lucene
(3.0.0). I extracted the tar.gz to a directory /home/paul/bin/lucene-3.0.0
and changed into the directory. The contents of the directory are as
follows:
total 2288
-rw-r--r-- 1 paul paul 3759 2009-11-16 14:00 BUILD.txt
-rw-r--r-- 1 paul paul 9931 2009-11-22 14:47 build.xml
-rw-r--r-- 1 paul paul 183614 2009-11-22 14:03 CHANGES.txt
drwxr-xr-x 25 paul paul 4096 2010-02-13 20:00 contrib
drwxr-xr-x 7 paul paul 4096 2009-11-22 14:47 docs
-rw-r--r-- 1 paul paul 1616 2009-11-17 20:09 JRE_VERSION_MIGRATION.txt
drwxr-xr-x 2 paul paul 4096 2010-02-13 20:00 lib
-rw-r--r-- 1 paul paul 12637 2009-11-16 14:00 LICENSE.txt
-rw-r--r-- 1 paul paul 1021623 2009-11-22 14:44 lucene-core-3.0.0.jar
-rw-r--r-- 1 paul paul 57087 2009-11-22 14:47 lucene-demos-3.0.0.jar
-rw-r--r-- 1 paul paul 995413 2009-11-22 14:47 luceneweb.war
-rw-r--r-- 1 paul paul 1319 2009-11-16 14:00 NOTICE.txt
-rw-r--r-- 1 paul paul 1157 2009-11-16 14:00 README.txt
drwxr-xr-x 4 paul paul 4096 2010-02-13 20:00 src
I then run the following command, with the following results:
java -cp /home/paul/bin/lucene-3.0.0/ org.apache.lucene.demo.IndexFiles docs
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/lucene/demo/IndexFiles
Caused by: java.lang.ClassNotFoundException:
org.apache.lucene.demo.IndexFiles
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: org.apache.lucene.demo.IndexFiles. Program
will exit.
I also tried:
CLASSPATH=/home/paul/bin/lucene-3.0.0/
echo $CLASSPATH
/home/paul/bin/lucene-3.0.0/
java org.apache.lucene.demo.IndexFiles docs
This gives the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: docs
Caused by: java.lang.ClassNotFoundException: docs
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: docs. Program will exit.
I've searched the mailing lists and the problem generally seems to be that
the class path is not set. Is this the issue here. If so what am I doing
wrong? Why does the second example say the class docs is missing when this
is the directory to index? Does this all mean the classpath is not set in
the first example but is in the second?
Alternatively any suggestions as to what the problem is? If it's a java
problem and is in the wrong forum, my apologies. If some one'll point me in
the right direction I'd be grateful.
Many thanks in advance.
Regards
Paul
Re: Problem running demo's - java classes not found
Posted by Paul Rogers <pa...@gmail.com>.
Erick
What a star!! Hadn't thought of that. Assumed (always a mistake) that the
classpath only pointed to the directory. Using the following command:
java -cp
/home/paul/bin/lucene-3.0.0/lucene-core-3.0.0.jar:/home/paul/bin/lucene-3.0.0/lucene-demos-3.0.0.jar
org.apache.lucene.demo.IndexFiles docs
fixed the problem. docs directory is now indexed!!
Many thanks for all your help.
Regards
Paul
On 4 March 2010 19:52, Erick Erickson <er...@gmail.com> wrote:
> Doesn't your classpath need the full path to the jar, not just
> the containing directory?
>
> On Thu, Mar 4, 2010 at 1:22 PM, Paul Rogers <pa...@gmail.com>
> wrote:
>
> > Dear All
> >
> > Further to my previous email I notice I made a mistake with the second
> > example. When I entered the second command it actually read:
> >
> > java -cp org.apache.lucene.demo.IndexFiles docs
> >
> > This is what gave the strange error about the docs Class was. If I issue
> > the correct command:
> >
> > java org.apache.lucene.demo.IndexFiles docs
> >
> > I get the same error as the first example. My apologies for the
> typo/mix
> > up.
> >
> >
> > Regards
> >
> >
> >
> > Paul
> >
> > ---------- Forwarded message ----------
> > From: Paul Rogers <pa...@gmail.com>
> > Date: 4 March 2010 17:49
> > Subject: Problem running demo's - java classes not found
> > To: java-user@lucene.apache.org
> >
> >
> > Dear All
> >
> > Hope someone can help. I'm trying to run the demo's that came with
> Lucene
> > (3.0.0). I extracted the tar.gz to a directory
> /home/paul/bin/lucene-3.0.0
> > and changed into the directory. The contents of the directory are as
> > follows:
> >
> > total 2288
> > -rw-r--r-- 1 paul paul 3759 2009-11-16 14:00 BUILD.txt
> > -rw-r--r-- 1 paul paul 9931 2009-11-22 14:47 build.xml
> > -rw-r--r-- 1 paul paul 183614 2009-11-22 14:03 CHANGES.txt
> > drwxr-xr-x 25 paul paul 4096 2010-02-13 20:00 contrib
> > drwxr-xr-x 7 paul paul 4096 2009-11-22 14:47 docs
> > -rw-r--r-- 1 paul paul 1616 2009-11-17 20:09
> JRE_VERSION_MIGRATION.txt
> > drwxr-xr-x 2 paul paul 4096 2010-02-13 20:00 lib
> > -rw-r--r-- 1 paul paul 12637 2009-11-16 14:00 LICENSE.txt
> > -rw-r--r-- 1 paul paul 1021623 2009-11-22 14:44 lucene-core-3.0.0.jar
> > -rw-r--r-- 1 paul paul 57087 2009-11-22 14:47 lucene-demos-3.0.0.jar
> > -rw-r--r-- 1 paul paul 995413 2009-11-22 14:47 luceneweb.war
> > -rw-r--r-- 1 paul paul 1319 2009-11-16 14:00 NOTICE.txt
> > -rw-r--r-- 1 paul paul 1157 2009-11-16 14:00 README.txt
> > drwxr-xr-x 4 paul paul 4096 2010-02-13 20:00 src
> >
> > I then run the following command, with the following results:
> >
> > java -cp /home/paul/bin/lucene-3.0.0/ org.apache.lucene.demo.IndexFiles
> > docs
> >
> > Exception in thread "main" java.lang.NoClassDefFoundError:
> > org/apache/lucene/demo/IndexFiles
> > Caused by: java.lang.ClassNotFoundException:
> > org.apache.lucene.demo.IndexFiles
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > Could not find the main class: org.apache.lucene.demo.IndexFiles.
> Program
> > will exit.
> >
> > I also tried:
> >
> >
> > CLASSPATH=/home/paul/bin/lucene-3.0.0/
> >
> > echo $CLASSPATH
> > /home/paul/bin/lucene-3.0.0/
> >
> > java org.apache.lucene.demo.IndexFiles docs
> >
> > This gives the following error:
> >
> > Exception in thread "main" java.lang.NoClassDefFoundError: docs
> > Caused by: java.lang.ClassNotFoundException: docs
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> > Could not find the main class: docs. Program will exit.
> >
> > I've searched the mailing lists and the problem generally seems to be
> that
> > the class path is not set. Is this the issue here. If so what am I
> doing
> > wrong? Why does the second example say the class docs is missing when
> this
> > is the directory to index? Does this all mean the classpath is not set
> in
> > the first example but is in the second?
> >
> > Alternatively any suggestions as to what the problem is? If it's a java
> > problem and is in the wrong forum, my apologies. If some one'll point me
> > in
> > the right direction I'd be grateful.
> >
> > Many thanks in advance.
> >
> > Regards
> >
> > Paul
> >
>
Re: Problem running demo's - java classes not found
Posted by Erick Erickson <er...@gmail.com>.
Doesn't your classpath need the full path to the jar, not just
the containing directory?
On Thu, Mar 4, 2010 at 1:22 PM, Paul Rogers <pa...@gmail.com> wrote:
> Dear All
>
> Further to my previous email I notice I made a mistake with the second
> example. When I entered the second command it actually read:
>
> java -cp org.apache.lucene.demo.IndexFiles docs
>
> This is what gave the strange error about the docs Class was. If I issue
> the correct command:
>
> java org.apache.lucene.demo.IndexFiles docs
>
> I get the same error as the first example. My apologies for the typo/mix
> up.
>
>
> Regards
>
>
>
> Paul
>
> ---------- Forwarded message ----------
> From: Paul Rogers <pa...@gmail.com>
> Date: 4 March 2010 17:49
> Subject: Problem running demo's - java classes not found
> To: java-user@lucene.apache.org
>
>
> Dear All
>
> Hope someone can help. I'm trying to run the demo's that came with Lucene
> (3.0.0). I extracted the tar.gz to a directory /home/paul/bin/lucene-3.0.0
> and changed into the directory. The contents of the directory are as
> follows:
>
> total 2288
> -rw-r--r-- 1 paul paul 3759 2009-11-16 14:00 BUILD.txt
> -rw-r--r-- 1 paul paul 9931 2009-11-22 14:47 build.xml
> -rw-r--r-- 1 paul paul 183614 2009-11-22 14:03 CHANGES.txt
> drwxr-xr-x 25 paul paul 4096 2010-02-13 20:00 contrib
> drwxr-xr-x 7 paul paul 4096 2009-11-22 14:47 docs
> -rw-r--r-- 1 paul paul 1616 2009-11-17 20:09 JRE_VERSION_MIGRATION.txt
> drwxr-xr-x 2 paul paul 4096 2010-02-13 20:00 lib
> -rw-r--r-- 1 paul paul 12637 2009-11-16 14:00 LICENSE.txt
> -rw-r--r-- 1 paul paul 1021623 2009-11-22 14:44 lucene-core-3.0.0.jar
> -rw-r--r-- 1 paul paul 57087 2009-11-22 14:47 lucene-demos-3.0.0.jar
> -rw-r--r-- 1 paul paul 995413 2009-11-22 14:47 luceneweb.war
> -rw-r--r-- 1 paul paul 1319 2009-11-16 14:00 NOTICE.txt
> -rw-r--r-- 1 paul paul 1157 2009-11-16 14:00 README.txt
> drwxr-xr-x 4 paul paul 4096 2010-02-13 20:00 src
>
> I then run the following command, with the following results:
>
> java -cp /home/paul/bin/lucene-3.0.0/ org.apache.lucene.demo.IndexFiles
> docs
>
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/lucene/demo/IndexFiles
> Caused by: java.lang.ClassNotFoundException:
> org.apache.lucene.demo.IndexFiles
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> Could not find the main class: org.apache.lucene.demo.IndexFiles. Program
> will exit.
>
> I also tried:
>
>
> CLASSPATH=/home/paul/bin/lucene-3.0.0/
>
> echo $CLASSPATH
> /home/paul/bin/lucene-3.0.0/
>
> java org.apache.lucene.demo.IndexFiles docs
>
> This gives the following error:
>
> Exception in thread "main" java.lang.NoClassDefFoundError: docs
> Caused by: java.lang.ClassNotFoundException: docs
> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
> Could not find the main class: docs. Program will exit.
>
> I've searched the mailing lists and the problem generally seems to be that
> the class path is not set. Is this the issue here. If so what am I doing
> wrong? Why does the second example say the class docs is missing when this
> is the directory to index? Does this all mean the classpath is not set in
> the first example but is in the second?
>
> Alternatively any suggestions as to what the problem is? If it's a java
> problem and is in the wrong forum, my apologies. If some one'll point me
> in
> the right direction I'd be grateful.
>
> Many thanks in advance.
>
> Regards
>
> Paul
>
Fwd: Problem running demo's - java classes not found
Posted by Paul Rogers <pa...@gmail.com>.
Dear All
Further to my previous email I notice I made a mistake with the second
example. When I entered the second command it actually read:
java -cp org.apache.lucene.demo.IndexFiles docs
This is what gave the strange error about the docs Class was. If I issue
the correct command:
java org.apache.lucene.demo.IndexFiles docs
I get the same error as the first example. My apologies for the typo/mix
up.
Regards
Paul
---------- Forwarded message ----------
From: Paul Rogers <pa...@gmail.com>
Date: 4 March 2010 17:49
Subject: Problem running demo's - java classes not found
To: java-user@lucene.apache.org
Dear All
Hope someone can help. I'm trying to run the demo's that came with Lucene
(3.0.0). I extracted the tar.gz to a directory /home/paul/bin/lucene-3.0.0
and changed into the directory. The contents of the directory are as
follows:
total 2288
-rw-r--r-- 1 paul paul 3759 2009-11-16 14:00 BUILD.txt
-rw-r--r-- 1 paul paul 9931 2009-11-22 14:47 build.xml
-rw-r--r-- 1 paul paul 183614 2009-11-22 14:03 CHANGES.txt
drwxr-xr-x 25 paul paul 4096 2010-02-13 20:00 contrib
drwxr-xr-x 7 paul paul 4096 2009-11-22 14:47 docs
-rw-r--r-- 1 paul paul 1616 2009-11-17 20:09 JRE_VERSION_MIGRATION.txt
drwxr-xr-x 2 paul paul 4096 2010-02-13 20:00 lib
-rw-r--r-- 1 paul paul 12637 2009-11-16 14:00 LICENSE.txt
-rw-r--r-- 1 paul paul 1021623 2009-11-22 14:44 lucene-core-3.0.0.jar
-rw-r--r-- 1 paul paul 57087 2009-11-22 14:47 lucene-demos-3.0.0.jar
-rw-r--r-- 1 paul paul 995413 2009-11-22 14:47 luceneweb.war
-rw-r--r-- 1 paul paul 1319 2009-11-16 14:00 NOTICE.txt
-rw-r--r-- 1 paul paul 1157 2009-11-16 14:00 README.txt
drwxr-xr-x 4 paul paul 4096 2010-02-13 20:00 src
I then run the following command, with the following results:
java -cp /home/paul/bin/lucene-3.0.0/ org.apache.lucene.demo.IndexFiles docs
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/lucene/demo/IndexFiles
Caused by: java.lang.ClassNotFoundException:
org.apache.lucene.demo.IndexFiles
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: org.apache.lucene.demo.IndexFiles. Program
will exit.
I also tried:
CLASSPATH=/home/paul/bin/lucene-3.0.0/
echo $CLASSPATH
/home/paul/bin/lucene-3.0.0/
java org.apache.lucene.demo.IndexFiles docs
This gives the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: docs
Caused by: java.lang.ClassNotFoundException: docs
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: docs. Program will exit.
I've searched the mailing lists and the problem generally seems to be that
the class path is not set. Is this the issue here. If so what am I doing
wrong? Why does the second example say the class docs is missing when this
is the directory to index? Does this all mean the classpath is not set in
the first example but is in the second?
Alternatively any suggestions as to what the problem is? If it's a java
problem and is in the wrong forum, my apologies. If some one'll point me in
the right direction I'd be grateful.
Many thanks in advance.
Regards
Paul