Another idiotic CLASSPATH problem

I'm a bit new to both Java and Linux, so this is probably not as complicated as I think:
When compiling with javac, or running with java, I have found it necessary to add "-cp $CLASSPATH:$PWD" or files in the current directory will not be found. Is there a way to make Java search the current directory automatically? Honestly, it's a little surprising that it doesn't....
And, on the same subject, I had to set up CLASSPATH manually; which directories in the JDK folder is it supposed to point to?
Many thanks,
Andy Sommerville

Hey! Fixed it myself:
The problem was that I had not added "." to CLASSPATH. Pretty obvious.

Similar Messages

Another simple classpath problem question

Hi All
Yes I know, there are a lots of questions about this matter, but I couldn't found a solution to my problem.
I have a simple program:
public class prueba {
public static void main(String[] args) {
System.out.println("Ahi va...");
}placed in /tmp/javier/prueba.java
After compiled, I've tried to run it from / and then problems started:
cd /
java /tmp/javier/prueba
Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/javier/prueba (wrong name: prueba)
I said, ok...it could be a classpath problem...then:
java -cp /tmp/javier/ /tmp/javier/prueba
Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/javier/prueba
Damn, another try...
java -cp .:/tmp/javier/ /tmp/javier/prueba
Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/javier/prueba (wrong name: prueba)
Jesus Christ....may be the last slash....
java -cp .:/tmp/javier /tmp/javier/prueba
Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/javier/prueba (wrong name: prueba)
Oh...no.... may be classpath to java classes..
java -cp .:/usr/java/j2sdk1.4.2_01/lib/jre/:/tmp/javier/ /tmp/javier/prueba
Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/javier/prueba (wrong name: prueba)
Well, I don't know why this error happens....
Please, could somebody help me !!!
Thanks in advance...
<jl>

It's not too early to start following the Sun coding
conventions for Java:
http://java.sun.com/docs/codeconv/html/CodeConvTOC.doc.
tmlHi
thanks for your reply.
Yes, I agree. I use conventions with my programs. But my real problem was with a real application and then I did quickly this simple code to help others to understand the problem and give a fast reply...
Let me know if that works. (It was fine on my
machine.) - MODYes it works fine, thanks.... and Damn...Murphys law again, the only option I didn't tried is the solution to my problem... :)
Thanks again...

Classpath problem

i am here stuck..
my dir structure is
c:\my\xxx\yyy\zzz
i have a code ...
package xxx.yyy.zzz;
class A
// some code
}i have compiled sucessfully and put the clsss file into c:\my\xxx\yyy\zzz folder.
now i want to import it in another class
like...
package xxx.yyy; // note this
import xxx.yyy.zzz.*; // note this
class B
// some code
// creating instance of class A here
}question is how do i compile and run it ?
i am at c:\my---> what should be the command to compile and run the above code?
plz give me the explicit command so that i can test and verify . i have given the dir structure.
i have tried several ways but got class not found exception and errors . i know its a classpath problem but i could not figure out what should i type at the c:\my prompt.
can u give exact command to run and compile the above code in steps ?
thanx

question is how do i compile and run it ?You don't with that code. You've defined class A to have "package visibility," meaning it can't be used from outside its package. You should declare it with public visibility instead, like "public class A {...".
Once you change that, use these commands to compile and run:c:\my\>javac xxx/yyy/zzz/A.java
c:\my\>javac xxx/yyy/B.java
c:\my\>java xxx.yyy.B

Yes another user with problem with Apple Mobile Device Support, I am getting the error message: Service 'Apple Mobile Device'(Apple Mobile Device) failed to start. Vertify that you have sufficient privileges to start system service....

Yes another user with problem with Apple Mobile Device Support, I am getting the error message: Service 'Apple Mobile Device'(Apple Mobile Device) failed to start. Vertify that you have sufficient privileges to start system service....I hit retry and it came up again. I hit ignore and it prompted me to hit finish so Itunes can open. I looked thru alot of these posts on here to try and resolve this problem myself but it's not working too well...I downloaded Itunes to my desktop so I can right click it with the program i downloaded called WinRAR. I extracted it and then went into the folder called Itunes64setup. I saw the file called AppleMobileDeviceSupport64 in there so I began to try and download it on it's own. Well that didn't work as I planned and got this error message:
Apple Mobile Device Support wasn't installed on your computer. The installer encountered errors before Apple Mobile Device Support could be configured. Your system has not been modified. To retry these operations at a later time,please run the installer again.
Well I tried to run it again and came up with the same message...I see that some people got great support to help them so I am hoping someone can help me as well. I know "b nor" is very qualfied and hopefully can help me! Please advise what I can do. Thank you

Hi Iss9243,
Welcome to the Support Communities!
You've already tried some great troubleshooting steps, but the article below gives you quite a few more for this issue. Hope it helps ....
iTunes 11.1.4 for Windows: Unable to install or open
http://support.apple.com/kb/TS5376
Cheers,
- Judy

Classpath Problem (Using JSAPI)

Hi,
I using IBM Via Voice as a the implementation of the JSAPI on my system. I've downloaded the speech for java pack from IBM Alphaworks and put it in the directory of
c:\ibmjs
This gives you access to the speech packages for utilisation in your programs so I should be able to import javax.speech in my programs. However the system doesn't see these classes.
Heres my Autoexec...
path=%path%;c:\jdk1.3.1_01\bin;c:\ibmjs\lib;
CLASSPATH=%CLASSPATH%;c:\ibmjs\lib\ibmjs.jar;
I presume the whole thing is just a classpath problem, does anybody have any idea from the above paths where I am going wrong?

i guess you have to put some of ibm's dll files coming with speech for java in the path (not classpath). it's not sufficient to have the directories in the path.
anyway, there come's an installation manual with speech for java which explaines all that.

Fragment Bundle Classpath problems

Does anyone have any tips for solving classpath problems in fragment bundles? I'm getting a no-class-def that I can't explain.
I've used maven to create a fragment, hosted by com.day.crx.sling.server, to create a custom login. It needs to call a web service, so I've included httpclient-4.2.3.jar. I can see this jar listed on the deployed fragment's Bundle-ClassPath, via the osgi>bundle console. When I inspect the bundle that maven created, I can find this jar contained in the bundle jar, in the directory specified in the Bundle-ClassPath. I even oppened the httpclient jar to ensure that the offending class (org/apache/http/client/HttpClient) is there.
This is the first fragment that I've tried to build. Is there something I don't know about how they load classes?
Does anyone have any tips or tricks on solving osgi classpath problems? I read that felix has some tools, but I haven't found any documentation about them.

I'm still not sure why the classes didn't load, but I have a solution to my problem - don't try to include the jars in the fragment bundle. I tracked down osgi-ready versions of the libraries that I needed and and installed them.

Classpath problems in EAR packaging?

I try to access an EJB from a JSP. The JSP resides in web.war and the bean is in ejb.jar, and both of these are packaged together in an ear.
I get a compile error when I try opening a JSP. I've had this problem in all my attempts to use my bean classes from JSP.
My browser reports that the compiler cannot find the beans package. I have servlets within the war-file that are able to find the beans package, but the JSPs aren't.
My ear-file contains 3 files
ejb.jar
web.war
META-INF\MANIFEST.MF
The manifest classpath points to ejb.jar and web.war
My guess is that this has something to do with the way this is deployed by GlassFish.
The application is deployed in the
domains\mydomain\applications\j2ee-apps\myear\
This directory contains the expanded files:
ejb_jar\
web_war\
META-INF
So the Java classes under web_war\ are able to see the Java classes under ejb_jar\ (i.e. my servlets)
However; when GlassFish creates Java files from the JSPs and then tries to compile them, these files are placed under
domains\mydomain\generated\jsp\j2ee-apps\myear\web_war\org\apache\jsp\jsp
This might be correct for all I know, but apparently the compiler is unable to find the Java classes located under the mydomain\applications\.. directory when compiling classes located under the mydomain\generated\.. directory. There are no other files from my ear anywhere in the "generated" directory.
So to me this seems to be some kind of classpath problem, as the compiler cannot find the needed files.
Does this make any sense to anyone?
PS
In my ear, the JSPs are placed in the web.war. The war file looks like this:
jsp\
   myjsp.jsp
META-INF
   MANIFEST.MF
WEB-INF
   web.xml
   lib\
      mylib.jarThanks
\\Marius

Marius,
If you want communicate the bean you have to do following things.
. Create a factory for the correct protocol
. Obtain a Home
. Use the Home to create stubs to the remote object
So you want to call the Home and Remote interfaces to access the bean. When you run the client program, it will create the remote object that time it has to search the Home and Remote interfaces. So you have included those files for references in following location
WEB-INF/classes
     -- <Home Interface File Name>.class
     -- <Remote Interface File Name>.class
Or
WEB-INF/lib
     -- <Bean Jar file name>.jar
I think you will understand.
-Mani

Again classpath problem

again classpath problem.... i have tried to solve it in many ways but all failed. here is one
instance of my effort which did not give me success.
i have a FOLDER > c:/com/abc/def/ijk
and files......
MyClass.java
==============
package com.abc.def.ijk
class MyClass
// blah
// blah
}c:\com\abc\def\ijk>javac MyClass.java ===>compiled fine and created a class file.
and also one more file.....
OneMoreClass.java
=================
import com.abc.def.ijk.MyClass
class OneMoreClass
// blah
// blah
}c:\com\abc\def\ijk>javac OneMoreClass.java ===> Error!!! package com.abc.def.ijk does not exist !!!!
how can i solve it ?

yea, this works....eariler i also usued to do this
way. but this time i forgot.
by the way, why individually it did not work !!!.Because you were in the package directory itself, and the classpath was set to the cwd, so java was looking for package directories at this level.
and also when i specify directly by
c:\com\abc\def\ijk
javac -classpath c:\com\abc\def\ijk\MyClass
OneMoreClass.java ...it does not work!!.
STRANGE! why ?Because by stating the package directory as classpath, you do the same as explained above. Stay out of package directories, stay one level above them, don't regard them as common directories. When declaring classpaths, don't mention package directories but the directories that contain them.

JDBC and Classpath problems on OpenVMS

Hello,
I'm working on an OpenVMS server and I got a simpler Java application that needs to establish a connection to an Oracle database, the application works perfectly well on Windows but when I moved to OpenVMS I got some problems with the oracle driver.
I believe I�m using the correct driver, I already checked on the oracle site according to my java version (1.4.2) and my database version (oracle 9i 9.2.0.7.0)
This is the error:
$java -jar miss.jar "DnBProcess"
About to start loading parameters for the MISS Proxy.
Successfully load parameters for the MISS Proxy.
About to load interface settings for DnBProcess
Settings for DnBProcess succesffully loaded.
About to load interface DnBProcess
About to start loading parameters for DnB Interface.
Successfully load parameters for DnB Interface.
Interface DnBProcess succesffully loaded.
About to execute interface DnBProcess
Connecting to the database...
java.lang.NoClassDefFoundError: oracle/jdbc/OracleDriver
at miss.DnBProcess.ExecuteQueryToFile(DnBProcess.java:85)
at miss.DnBProcess.Execute(DnBProcess.java:178)
at miss.Proxy.ExecuteInterface(Proxy.java:160)
at miss.Proxy.main(Proxy.java:207)
I know is a classpath problem, and my classpath on VMS looks like this:
define JAVA$CLASSPATH .,SYS$COMMON:[JAVA$142.LIB]TOOLS.JAR,SYS$COMMON:[JAVA$142.LIB]DT.JAR,SYS$COMMON:[JAVA$142.JRE.LIB]RT.JAR, USER1:[MONTEALEGRE.TEST.LIBS]OJDBC14.JAR,USER1:[MONTEALEGRE.TEST.MISS.LIBS]OJDBC14.JAR,[]
As you can see I added the �ojdbc14.jar� in different folders but my application seems not to find it.
Does anyone know how to set the classpath properly on VMS? Or maybe give me some tips that could lead me to find a solution to this problem.
Thanks.
Ileana.

I would try googling for OpenVMS classpath. Unfortunatley the first result is this thread but there are a bunch of resources from IBM and HP listed and maybe they can help you.

Help classpath problem j2sdk1.4.2_04

help classpath problem j2sdk1.4.2_04
how can i run the java program with specify the file location
such as :
-----this one is fine ok and return HelloWorld.class-----
[root@localhost root]javac /serverData/studentAC/s001/HelloWorld.java
-----but this one cause exception-----
[root@localhost root]java /serverData/studentAC/s001/HelloWorld
-----result-----
Exception in thred "main" java.lang.NoClassDefFoundError: /serverData/studentAC/s001/HelloWorld
[root@localhost root]
I have tried a lot of classpath setting:
I just want to compile and run the java program without specify the classpath only !! please help !!! and give suggest !! if you have this exp!!
# ---1
#PATH=/usr/java/j2sdk1.4.2_04/bin:$PATH:$HOME/bin:./
#export PATH
#export JAVA_HOME=/usr/java/j2sdk1.4.2_04/
#export #CLASSPATH=/usr/java/j2sdk1.4.2_04/lib/tools.jar:/usr/java/j2sdk1.4.2_04/jre/lib/rt.jar:./
# ---2
#set java environment
# Java Setup Section START
export JAVA_HOME="/usr/java/j2sdk1.4.2_04"
export JRE="$JAVA_HOME/jre"
export CLASSPATH="$JAVA_HOME/lib:$JRE/lib:$JAVA_HOME/lib/tools.jar:."
export PATH="$PATH:$JAVA_HOME/bin"
# Java Setup Section END
# ---3
#PATH=$PATH:/usr/java/j2sdk1.4.2_04/bin
#JAVA_HOME=/usr/java/j2sdk1.4.2_04/
#export PATH
# ---4
# Java Setup Section START
#JAVA_HOME=/usr/java/j2sdk1.4.2_04
#export JAVA_HOME
#CLASSPATH=$CLASSPATH:/usr/java/j2sdk1.4.2_04/lib:/usr/java/j2sdk1.4.2_04/jre/lib:./
#export CLASSPATH
#PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin
#export PATH
# Java Setup Section END
# ---5
#export PATH=$PATH:/usr/java/j2sdk1.4.2_04/bin
#export JAVA_HOME=/usr/java/j2sdk1.4.2_04
#export CLASSPATH=/usr/java/j2sdk1.4.2_04/lib:$CLASSPATH:.
# ---6
#====================================================
#export JAVA_HOME=/usr/java/j2sdk1.4.2_04
#export PATH=$JAVA_HOME/bin:$PATH
#export CLASSPATH=/usr/java/j2sdk1.4.2_04/lib:$CLASSPATH
#====================================================

I think this will work. java -classpath /serverData/studentAC/s001 HelloWorld

Servicegen classpath problem

I'm trying to find out the status of the servicegen classloading problem
(specifying a classpath in a servicegen task causes class cast exceptions).
We are currently using the workaround described in this group which is
putting the weblogic jars in the system classpath. This workaround is very
unwieldy in our build environment. Is there any estimate on when the
problem will be fixed?

And was it? I am using 7.0sp4 and am getting classpath problems in servicegen.
The problem I am having is that the type generation fails to find any of the weblogic
utility classes, sug as weblogic.xml.schema.binding.util.runtime.PropertyInfo
(and many many others)
"Neal Yin" <[email protected]> wrote:
This will be fixed in 7.0sp3 and 8.1sp1.
Thanks,
-Neal
"John Horner" <[email protected]> wrote in message
news:[email protected]..
I'm trying to find out the status of the servicegen classloading problem
(specifying a classpath in a servicegen task causes class castexceptions).
We are currently using the workaround described in this group whichis
putting the weblogic jars in the system classpath. This workaroundis
very
unwieldy in our build environment. Is there any estimate on when the
problem will be fixed?

Not another classpath problem...

I'm trying to use the TableExample demo from jdk1.3.1. I'm using cloudscape as the database for this from the j2sdkee1.3.1.
The database starts no problem (rmi mode).
So I run the example and provide the database driver in the popup window, only to get the exception:
java.lang.ClassNotFoundException: COM.cloudscape.core.RmiJdbcDriver
So it can't find the class at all. So to try things out I attempt to run this class (knowing that it won't have a main method, but just to see if it is found):
C:\jdk1.3.1\demo\jfc\TableExample>java -classpath %CLASSPATH% COM.cloudscape.core.RmiJdbcDriver
Exception in thread "main" java.lang.NoSuchMethodError: main
So my system can find the class but not the main method in it. So why can't the demo application also find this class?
I must have read lots of tracks on classpath and though I knew what I was doing (adding all paths/jars to the classpath environment variable). Obviously I don't!
ps Both running the application and trying to run the class were from the same shell using the same value of classpath.

I work under NT 4.0 and am new to java. I have this batch file which I run in a command window before starting to work:
PATH=.;D:\Java\jdk1.3.1_02\bin;D:\Java\jdk1.3.1_02\jre\bin;C:\WINNT\system32;C:\WINNT;
SET CLASSPATH=D:\Java\jdk1.3.1_02\jre\lib;.
Notice the ".", that tells Windows NT to look in the current directory.
I do it this way because I have other development tools installed which also use Java and I did not want to interfere with them as I was learning.
Good luck
Bill

Another t3-client/classpath problem

Hi
This is a wl6.0 problem.
I am trying to load a t3 client as a startup class.
The t3 client looks up the home interface of a
deployed ejb bean.
The startup of the client fails because it cant find the home interface
in the
classpath. This is strange since the ejb bean is deployed before the
startup
of the client.
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Info> <WebLogicServer> <Invoking
startup class: com.caput.modules.listserv.client.T3Client.startup(null)>
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Info> <WebLogicServer>
<com.caput.modules.listserv.client.T3Client reports: Poller / $Revision:
1.4 $ with weblogic name Poller has been started in daemon thread by the
name: Poller-thread>
java.lang.NoClassDefFoundError:
com.caput.modules.core.ejb.DomainFinderHome
at
com.caput.modules.listserv.client.Poller.class$(Poller.java:41)
at
com.caput.modules.listserv.client.Poller.getDomains(Poller.java:560)
at
com.caput.modules.listserv.client.Poller.initDomainSetup(Poller.java:480)
at com.caput.modules.listserv.client.Poller.run(Poller.java:271)
at java.lang.Thread.run(Thread.java:484)
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Notice> <WebLogicServer>
<ListenThread listening on port 7051>
Evidently the interfaces of the deployed bean are not automatically put
in the classpath.
Does anyone know why?
The setup worked in well in wl5.1. But wl6.0 only operates with a java
classpath
and no weblogic classpath.
Putting the interfaces in the java classpath (in the startup script)
corrupts the
deployment of the ejb bean.
Any help on this problem would be a great help.
Thanks.
Michael Krogh
Developer
Michael Bundgaard Krogh
Caput A/S
Nygade 6
1164 Copenhagen
Denmark
Tel: +45 70 12 24 42
Fax: +45 70 11 24 42
mailto:[email protected]
http://www.caput.com

See http://e-docs.bea.com/wls/docs60/programming/topics.html#1037589
Handling EJB References in Startup Classes
If a startup class references enterprise beans, you will have to add the
EJB interfaces to the Java System classpath, because startup classes
execute before applications are deployed. This means that you cannot
change the EJB interfaces without restarting WebLogic Server.
When the deployment order will be fixed (sp1) you can use load-on-startup
servlet instead of startup class.
Michael B .Krogh <[email protected]> wrote:
Hi
This is a wl6.0 problem.
I am trying to load a t3 client as a startup class.
The t3 client looks up the home interface of a
deployed ejb bean.
The startup of the client fails because it cant find the home interface
in the
classpath. This is strange since the ejb bean is deployed before the
startup
of the client.
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Info> <WebLogicServer> <Invoking
startup class: com.caput.modules.listserv.client.T3Client.startup(null)>
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Info> <WebLogicServer>
<com.caput.modules.listserv.client.T3Client reports: Poller / $Revision:
1.4 $ with weblogic name Poller has been started in daemon thread by the
name: Poller-thread>
java.lang.NoClassDefFoundError:
com.caput.modules.core.ejb.DomainFinderHome
at
com.caput.modules.listserv.client.Poller.class$(Poller.java:41)
at
com.caput.modules.listserv.client.Poller.getDomains(Poller.java:560)
at
com.caput.modules.listserv.client.Poller.initDomainSetup(Poller.java:480)
at com.caput.modules.listserv.client.Poller.run(Poller.java:271)
at java.lang.Thread.run(Thread.java:484)
<Feb 15, 2001 11:07:32 AM GMT+00:00> <Notice> <WebLogicServer>
<ListenThread listening on port 7051>
Evidently the interfaces of the deployed bean are not automatically put
in the classpath.
Does anyone know why?
The setup worked in well in wl5.1. But wl6.0 only operates with a java
classpath
and no weblogic classpath.
Putting the interfaces in the java classpath (in the startup script)
corrupts the
deployment of the ejb bean.
Any help on this problem would be a great help.
Thanks.
Michael Krogh
Developer
Michael Bundgaard Krogh
Caput A/S
Nygade 6
1164 Copenhagen
Denmark
Tel: +45 70 12 24 42
Fax: +45 70 11 24 42
mailto:[email protected]
http://www.caput.com
Dimitri

Another classpath problem

im using ubuntu. i wrote a program called FlickrScreensaver in eclipse and got a .class file.
now when i navigate to the .class file's directory and type java FlickrScreensaver
i get this
Exception in thread "main" java.lang.NoClassDefFoundError: FlickrScreensaver (wrong name: screensaver/FlickrScreensaver)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
same if i try this: java -classpath . FlickrScreensaver
any ideas?
Thanks!

Because your class isn't in the default package. It's in a package named screensaver.
So you would go into the directory below screensaver and run
java screensaver.FlickrScreensaver

I think another ClassPath problem

I have a java application (class) called MainClass in package MP1. I want to use an external class in
it. the class is called kl1.java and here it is.
package pak1;
public class kl1 {
public int k;
I tried to import that class using JBuilder, Netbeans with no success. I don't want to put that class in my MP1 package (because it is not actually one but many classes, and they are all defined to be part of the pak1.something.something packages). If i put them in my MP1 package i will have to change every class to be part of the MP1.pak1.something.something package which obviously i can't do.
So the classes i want to use are located at C:\pak1 and my project is located at C:\myProject. How to use those classes. I added the classes with JBuilder somehow and it recognized them i.e. when i started writing import pak.k... it poped up the autofinish dialog with kl1 class showing. so it found the class. but when i compiled it it said couldn't find class.
the line kl1 k = new kl1(); was an error, it couldn't find kl1.
Please help. Thanks!

in the older versions of NetBeans you had to tell your project which folders to include; you used to be able to do it with a right click on resources and browse, but i've not looked how to do the same thing in the new version yet.

Another idiotic CLASSPATH problem

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