Classpath in LINUX????

Where and how to set classpath in linux??.
Is it the same way as we do it for windows???.
regards,
koel

I have set my classpath properly in my LINUX OS.When i run my class file it throws the following error.
[root@ compfetch]# java com.trytill.comp.analyse.SiteAnalysisFlow
java.lang.NoClassDefFoundError: java/util/ArrayList
I tried to see the contents of the src.jar.I'm getting the following error message
[root@ java]# jar tf src.jar
java.lang.NoClassDefFoundError: sun/tools/jar/Main
at java.lang.Throwable.<init>(Throwable.java:40)
at java.lang.Error.<init>(Error.java:21)
at java.lang.LinkageError.<init>(LinkageError.java:21)
at java.lang.NoClassDefFoundError.<init>(NoClassDefFoundError.java:21)
I want to know whether this error is becoz of the jdk kit i have.If so,which version of jdk is compatible with LINUX OS

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Setting Classpath in linux

Hi !! Can anyone help me in setting classpath in linux to run servlets/? I tried using this command..but didnt work
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Thanks
Nive

in ur autoexec.bat file write the following
set PATH=C:\jdk1.5.0_04\bin;%PATH%
set JAVA_HOME=C:\jdk1.5.0_04
set
CLASSPATH=.;C:\jakarta-tomcat-5.5.9\common\lib\servlet
-api.jar;C:\jakarta-tomcat-5.5.9\common\lib\jsp-api.ja
r;C:\Servlets+JSP;..;..\..;C:\jakarta-struts-1.2.4\lib
\struts.jarThis response is meaningless. Principally because the OP specifically mentioned the use of LINUX. Not Windows.
I've taken the advice of other forum users by avoiding a system level classpath variable. I define the classpath each time I compile and run. Working on Linux I tend to use command line argument files ( http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/javac.html#commandlineargfile ) which eliminates the need to redefine the classpath each time I compile or run my classes and apps. But others may do things differently.
Here is a website you might want to check out which pertains to setting the classpath on Solaris and Linux.
http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/classpath.html

Set classpath in linux

if u dont mind plz explain the steps of how to set java classpath in linux.?

The same way you do it in windows, except that you use ":" instead of ";" to seperate the paths.
Although you can set a environment variable (CLASSPATH), it is usually best to just provide the classpath explicitely in each command:
javac -cp <myclasspath> com/foo/Bar.java
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Setting Path and Classpath in Linux environnement

Hello,
I use to develop with JAVA under Windows platform,
now i am using j2sdk under Mandrake 8.0 , i dunno how to set my PATH end Classpath variables, could you show me how?
Thanks

Put this in your user's .bashrc file at the end of it.
JAVA_HOME=/path/to/java/install
PATH=$PATH:$JAVA_HOME/bin
export JAVA_HOME PATHAnd buy a book on Unix/Linux.

About path and classpath in linux

How to set classpath and path in Linux.
thank you very much!

The class path can be set using either the -classpath option when calling an SDK tool (the preferred method) or by setting the CLASSPATH environment variable. The -classpath option is preferred because you can set it individually for each application without affecting other applications and without other applications modifying its value.
% sdkTool -classpath path1:path2...
-or-
% setenv CLASSPATH path1:path2...
where:
sdkTool
A command-line tool, such as java, javac, or javadoc. For a listing, see SDK Tools.
path1:path2
Paths to the .jar, .zip or .class files. Each path should end with a filename or directory depending on what you are setting the class path to:
For a .jar or .zip file that contains .class files, the path ends with the name of the .zip or .jar file.
For .class files in an unnamed package, the path ends with the directory that contains the .class files.
For .class files in a named package, the path ends with the directory that contains the "root" package (the first package in the full package name).
Multiple path entries are separated by colons.
The default class path is the current directory. Setting the CLASSPATH variable or using the -classpath command-line option overrides that default, so if you want to include the current directory in the search path, you must include "." in the new settings.
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How i can setup CLASSPATH in Linux!!!

Help me plese how I can to modify PATH for JMF in Linux Red Hat 7.2

The syntax for setting your classpath is slightly dependent on which shell you are using. The default shell for RedHat 5.x and 6.x is the bash shell. Two other popular shells are tcsh and and csh called "t shell" and "c shell." Thus, these 3 shells are covered here. If you are using a different shell, you can read the man pages by typing man "shellname" to find out the exact syntax. To find out which shell you are running, type the command finger yourusername such as finger tfox and look at the argument for Shell.
For bash shell:
export CLASSPATH=$CLASSPATH:/java/myjar
export PATH=$PATH:/java/mybin
For tcsh or csh:
set CLASSPATH = $CLASSPATH /java/myjar
set PATH=$PATH:/java/mybin
These commands can either be typed at the terminal each time you login, or you can add it to your .bashrc for bash shell or .cshrc for csh or tcsh so that each time you login, the CLASSPATH is already set. The $CLASSPATH means to keep the existing CLASSPATH and then append it with the other directories listed. This is helpful if a directory is set in the CLASSPATH by the System Administrator for everyone.

Using javac and classpath with Linux

My classpath is
/usr/java/jdk1.3.1_02/bin (that's the path to jdk1.3.1)
but I get a
/usr/java/jdk1.3.1_02/bin/i386/native_threads/javac: error while loading shared libraries: libstdc++-libc6.1-1.so.2: cannot open shared object file: No such file or directory
error when I try to compile a java file with javac. tried to set the classpath to
/usr/java/jdk1.3.1_02/bin/i386/native_threads/
and I get another error with that
Any help is appreciated, thanks

<http://developer.java.sun.com/developer/bugParade/bugs/4405489.html>
Assuming you are using RedHat, if other search at rpmfind.net for your distro (if it's a RPM-based distro):
You need either:
For RedHat 7.1: <http://www.rpmfind.net//linux/RPM/redhat/7.1/i386/compat-libstdc++-6.2-2.9.0.14.i386.html>
For RedHat 7.2:
<http://www.rpmfind.net//linux/RPM/redhat/7.2/i386/compat-libstdc++-6.2-2.9.0.16.i386.html>
The CLASSPATH values have already been specified in many other posts.
Bhav

Pakages & how to added them to your CLASSPATH under Linux OS

Yesterday i posted a question how to setup a CLASSPATH under
win2000. Finally with some help i got to work perfectly.
here is the link for that thread if any one interested in it.
http://forum.java.sun.com/thread.jsp?forum=31&thread=277111
Now my question how to do the same thing under Linux OS. I'm using
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archives/mo
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archives/mo/io
archives/mo/fileutil
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Hi,
Ok edit .cshrc file in your root dir, and add a line
set CLASSPATH=( pkg_a pkg_b pkg_c . )
this should work, if not try a few different configurations on the command line like infact try this first then edit your .cshrc file
[ option 1 ]
home> set CLASSPATH=(pkg_a pkg_b .)
home> echo $CLASSPATH
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home> { then try a sample java program }
[ option 2 ]
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regards,
gearoid

Compiling packages in linux

Hi I have been struggling with this for the last three days. I have tried multiple searches in the forums but cannot make head nor tail of setting the classpath in linux when compiling a package.
in the following directory "/home/tamtam/Java/Course/Unit4/act4_1"
I have two classes Greeting.java and Main.java
Greeting.java compiles successfully and creates Greeting.class
I cannot compile Main.java which uses the class Greeting.
Both have package act4_1 as the first line in the code.
I know I need to set the classpath but have been unable to do so. Where is the starting directory.
I havenot got a clue where to start.
I get error message
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location: class act4_1.Main
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tamtam

I am completely new to Linux and just started with Java.
Does anyone know a link to a step by step guide.
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In Java I have two files, Greeting.java and Main.java. Both have package act4_1 at the top of the file.
Main.java
package act4_1;
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import java.io.*;
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package act4_1;
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     Greeter.java.
import java.io.*;
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     public void Run() throws IOException
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The path is as above.

Javac problem due to a wrong classpath - WHY?

Hi,
this is the initial part of my classpath:
luca@linux:~> echo $classpath
:/java/jdk/jre/lib/rt.jar:/java/jikes/rvm/2.3.0.1/rvm.classes:
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With this (wrong) classpath, when I try to compile an application, the compiler stops due to problems compiling java.lang.Thread under rvm.classes. I've solved the problem inserting the right classpath in the second entry, but I'd like to know why the compiler asks me to compile Thread since it should be already available from rt.jar (which is the first entry).
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You don't need to put rt.jar in the classpath, the compiler will automatically look there for classes. So perhaps you are confusing the compiler by putting it there. Take it out.

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Thanks.

Your CLASSPATH is not getting set correctly for the application you are running.
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http://java.sun.com/j2se/1.3/docs/tooldocs/win32/classpath.html
-Scott
http://www.swiftradius.com

Jar files as application Error under linux

I created a jar file with the following jar command
jar cmf mainclass Asdi2GuiJar.jar *.class
Main-Class: ASDIGUI
It did work without any problem : java -jar Asdi2GuiJar.jar
when I added to the CLASSPATH under linux "Redhat 7.2" C-shell, it give me an error:
Exception in the thread main java.util.zip.ZipException: No Such file or directory
even im not using any zip file class in my java application. Any idea why im getting such an error even before addding the jar file to the CLASSPATH it did work without any problem?

ah young grasshopper you are using zip files :) rename your .jar file a .zip and use unzip on it :)
and that error means that the jvm's classloader couldn't load it's zip component so it's likely that your jvm can't find it's standard lib's
make sure your class path points to the /lib directory of your java install..... which version of the jdk are you using?
are you setting the classpath globally? since the way you said CLASSPATH I guess you are... ....are you keeping the old classpath when you set it? like CLASSPATH=$CLASSPATH:/myNewSource
or something like that...
maybe something in that will help

Set java classpath.

hai,
how to export- set classpath on linux platform.where is jdk located on fedora linux.

hai,
i got all u had told,but classpath is set compiles and run only one java class.
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Set classpath for java in fedora core 1?

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Ok, there is two ways to achieve this. Either by setting it globally for all the user, or only for your self. If you are working on your own station and have super user access, you can set it up for all th eusers, if not, just set it for your self. How ??
for all the users, modify the file /etc/profile and include this:
PATH=$PATH:/path/to/jdk/bin:.
CLASSPATH=$CLASSPATH:/path/to/jdk/lib/tools.jar:/path/to/jdk/lib/rt.jar
export PATH CLASSPATH
If you want to add it only for ur self then, modify the lsame line in ~/.bash_profile
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I am new to Java technology.I need to connect a MySQL database with Java.
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As far as I know, the classpath can be set in the .bashrc file for each user. Locate your user folder and open or create the .bashrc file. Inside this file add the following:
CLASSPATH = ${CLASSPATH} :ADD_YOUR_JAR_HERE:ADD_YOUR_CLASSDIR_HERE:ETC.
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If you want a quick way of adding all jars inside a folder to the classpath, you can do this:
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addJar /opt/java/jars
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Classpath in LINUX????

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