Can't get by Exception in thread "main" java.lang.NoClassDefFoundError:

With the help of someone on the Forum, I resolved the class reference that was giving me fits. But I'm still getting
Exception in thread "main" java.lang.NoClassDefFoundError: jform_example
This is all the information that I get. It compiles and runs from SunOne IDE, but not from command line. What Class reference or whatever am I missing? I don't know that my environment variables are correct. I've tried to find a comprehensive list of steps to do so, but without success. So I've been winging it.
What information should I provide that will help you help me. I'm spending WAY to much time on this issue.
Help!
Gary

This error occurs when the java.exe program can not find the class whose name was specified on the command line. Note that the argument to java.exe is the class name not a file name. java.exe tried to find a file whose name is jform_example.class. It searched the directories that were in your system's Classpath environment variable at the time of command execution. It didn't find the file.
So the file jform_example.class must exist, must be named exactly as specified (java is case sensitive so Jform_Example won't work), the source code must not start with a package statement (a package statement means the class name is package_name.jform_example), and the jform_example.class must be in a directory that's in your Classpath.
Try to CD to the directory where jform_example.class is located and use the command "java -classpath . jform_example" This uses the current directory as the Classpath during execution.

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On starting WebLogic getting Error : Listening for transport dt_socket at address: 8453 Exception in thread "main" java.lang.NoClassDefFoundError: vXmx512m

Hi,
system i am using for Oracle SOA is :
Windows 64 Bit
i5 Processor
6 GB RAM
29 GB on C Drive is already free after installation of all SOA related products.
I have installed wlserver_10.3 for SOA 11g Development purpose and followed exact installation sequence and procedure as mention in oracle documentation
i created domain also and every thing look correct but after installation procedure there are "Additional actions required just after every thing installed" :
setting memory limit
starting weblogic server (Admin Server)
starting weblogic managed server
and so on
now Problem is when i execute C:\Oracle\Middleware\user_projects\domains\soa_div_domain\bin startWebLogic.cmd
as mention in oracle documentation i am getting following error message : (i have only included last error lines instead of complete console log)
oConsole= -Dweblogic.ext.dirs=C:\Oracle\MIDDLE~1\patch_wls1036\profiles\default\
sysext_manifest_classpath;C:\Oracle\MIDDLE~1\patch_oepe180\profiles\default\syse
xt_manifest_classpath;C:\Oracle\MIDDLE~1\patch_ocp371\profiles\default\sysext_ma
nifest_classpath;C:\Oracle\MIDDLE~1\patch_adfr1111\profiles\default\sysext_manif
est_classpath weblogic.Server
Listening for transport dt_socket at address: 8453
Exception in thread "main" java.lang.NoClassDefFoundError: vXmx512m
Caused by: java.lang.ClassNotFoundException: vXmx512m
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        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: ++Xmx512m. Program will exit.
Now to resolve this what i already tried are :
I change JAVA_HOME and PATH to jdk6 which came with web logic installer
Location is at :
JAVA_HOME : C:\Oracle\Middleware\jdk160_29
PATH : C:\Oracle\Middleware\jdk160_29\bin
The above dose not include any space between path
I ran the startWebLogic.cmd and got same error
After that I also added
CLASSPATH : C:\Oracle\Middleware\jdk160_29\lib\tool.jar;C:\Oracle\Middleware\wlserver_10.3\server\lib\weblogic.jar;C:\Oracle\Middleware\jdk160_29\bin
WL_HOME: C:\Oracle\Middleware\wlserver_10.3
I ran the startWebLogic.cmd and got same error
I also used earlier path which I used with eclipse when I was working on other java development.
JAVA_HOME : C:\Program Files\Java\jdk1.7.0_21
PATH : C:\Program Files\Java\jdk1.7.0_21\bin
I ran the startWebLogic.cmd and got same error
Then I also gave PATH: C:\Oracle\Middleware\wlserver_10.3\server\lib      (including the existing one using ; )
I ran the startWebLogic.cmd and got same error
Now may be there is a file called setSOADomainEnv.cmd in
< C:\Oracle\Middleware\user_projects\domains\soa_div_domain\bin\ setSOADomainEnv.cmd>
That include some values for memory set :
set JAVA_OPTIONS=%JAVA_OPTIONS%
set DEFAULT_MEM_ARGS=-Xms512m –Xmx512m
set PORT_MEM_ARGS=-Xms512m –Xmx768m
if "%JAVA_VENDOR%" == "Oracle" goto OracleJVM
set DEFAULT_MEM_ARGS=%DEFAULT_MEM_ARGS% -XX:PermSize=128m -XX:MaxPermSize=768m
set PORT_MEM_ARGS=%PORT_MEM_ARGS% -XX:PermSize=256m -XX:MaxPermSize=768m
now as I change the red highlighted value to 512 value because I have less memory resource and I checked in installation documentation to change the above red highlighted value to 512 original is 1024 which is too high and it was crating problem and showing memory space problem so I change it to 512 and now I am not getting that memory space problem error but may be the above error is related with change value in setSOADomainEnv.cmd file or not
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WebLogic :
C:\Oracle\Middleware\wlserver_10.3
C:\Oracle\Middleware\coherence_3.7
C:\Oracle\Middleware\oepe_11.1.1.8.0
SOA Oracle Home Directory :
C:\Oracle\Middleware\Oracle_SOA1
OSB Home Location :
C:\Oracle\Middleware\Oracle_OSB1
Domain name : soa_div_domain
Domain Location :       C:\Oracle\Middleware\user_projects\domains
Application Location : C:\Oracle\Middleware\user_projects\applications
Domain Location:        C:\Oracle\Middleware\user_projects\domains\soa_div_domain
form here i am trying to start weblogic : C:\Oracle\Middleware\user_projects\domains\soa_div_domain\bin\startWebLogic.cmd
Please tell me any body want more details.
Thanks.

I think you are missing a character '-'
USER_MEM_ARGS="Xms512m -Xmx512m -XX:MaxPermSize=128m"Add this character like follows
"-Xms512m -Xmx512m -XX:MaxPermSize=128m"

Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/stream

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===== error=========================================
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at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
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at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
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I'm assuming you're using JWSDP 1.6 as I see Fastinfoset.jar in your list. You are missing some jar files in your classpath there. The best way to know what you need is to look at the release notes for JWSDP 1.6. Since you're building a web serivce start with the table in there and lookup JAX-RPC. It'll show you what jar files are needed and what other libraries are needed. Now depending on what you're doing you don't really need all those.
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at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java, Compiled Code)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java, Compiled Code)
at java.sql.DriverManager.getConnection(DriverManager.java, Compiled Code)
at java.sql.DriverManager.getConnection(DriverManager.java, Compiled Code)
at source.UserCompileASLFromPatch.getConnection(UserCompileASLFromPatch.java, Compiled Code)
at source.UserCompileASLFromPatch.initialize(UserCompileASLFromPatch.java, Compiled Code)
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hello debdatta
The JVM is unable to find the class. Just check ur driver class whether its included in the class path.
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Exception in thread "main" java.lang.NoClassDefFoundError: connect (wrong n

Please Help, I am giving up...
My PATH: %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;c:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Java\jdk1.6.0_11\bin;C:\Program Files\MySQL\MySQL Server 5.1\bin;C:\JAVA DOCUMENTATION\BasicJava1\Code;C:\Program Files\Mysql Connector J\mysql-connector-java-5.1.7\mysql-connector-java-5.1.7-bin.jar
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Before I set the ABOVE Path's I received the "com.mysql.jdbc.Driver" error. After adding the CLASS PATH as above I got the following Error
"com.mysql.jdbc.Driver"
After the ABOVE mentione PATH's Iam getting the following error:
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Exception in thread "main" java.lang.NoClassDefFoundError: connect (wrong name:
Connect)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
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THIS IS MY CODE.....
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Connect
public static void main (String[] args)
Connection conn = null;
try
String userName = "sampadm";
String password = "secret";
String url = "jdbc:mysql://localhost/sampdb";
Class.forName ("com.mysql.jdbc.Driver").newInstance ();
conn = DriverManager.getConnection (url, userName, password);
System.out.println ("Database connection established");
catch (Exception e)
System.err.println ("Cannot connect to database server");
System.err.println("Exception: " + e.getMessage());
finally
if (conn != null)
try
conn.close ();
System.out.println ("Database connection terminated");
catch (Exception e) { /* ignore close errors */ }
PLEASE PLEASE HELP, AS I NEED TO GET PASSED THIS ERROR NOW. I NEED TO PROGRESS !!
THANKS TO ANYBODY THAT CAN ASSIST
FYI
JUDY

Java is case sensitive. Connect != connect

Exception in thread "main" java.lang.NoClassDefFoundError: trial

hi!
i am trying to run a simple java program.
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Exception in thread "main" java.lang.NoClassDefFoundError: trial
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Hi,
This is propably a CLASSPATH problem.
Make sure the location of your program is in the classpath.
If you run the program from within the directory where the program resides (and the program doesn't belong to a package), try adding a dot to your classpath like this:
set CLASSPATH=%CLASSPATH%;.
java trial
Also note that the parameter you pass to java is case sensitive. In this case the file should be named "trial.class".
If the program is in a .jar file, add that .jar file to your classpath.
Hope this helps,
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TZupdater: Exception in thread "main" java.lang.NoClassDefFoundError:

Hello,
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Getting the following messages:
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Exception in thread "main" java.lang.NoClassDefFoundError: /marksman/packages/tzupdater2006p/tzupdater/jar
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/usr/j2se/jre/bin/sparcv9/java
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/usr/j2se/opt/javahelp/doc/api/com/sun/java
/usr/java
/usr/iplanet/console5.1/java
/usr/iplanet/ds5/java
/usr/iplanet/admserv5.1/java
/usr/apache/jserv/docs/api/org/apache/java
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/usr/appserver/samples/rmi-iiop/cpp/src/client/java
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/usr/dlc91d/jre/bin/java
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/usr/dlc91d/jre/bin/sparc/native_threads/java
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Hi,
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Exception in thread "main" java.lang.NoClassDefFoundError: weblogic/Server

Dear Sir/Madam
I downloaded the Weblogic610 server five times, and when I install it on my Linux
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Some packeage is very strange, after my downloaded, and install, there are only
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Thank you
Cidy

Hi Raj,
Could you provide more information from the log; is there a full
traceback. A first step may be to use the latest service pack [1].
Also you might try your question in the management newsgroup [2] or
contact our outsanding support group [3].
Hope this is of some value,
Bruce
[1]
http://commerce.bea.com/showproduct.jsp?family=WLS&major=8.1&minor=2
[2]
http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=xover&group=weblogic.developer.interest.management
[3]
http://[email protected]
Raj wrote:
>
Hello All,
I have installed wls 8.1 and created domain. I have manged server running at other location.I am getting the following Log,When i tried to start managed server from admin server
java.lang.NoClassDefFoundError: weblogic/Server Exception in thread "main"
and on admin side
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Exception in thread "main" java.lang.NoClassDefFoundError: oracle/jdbc/pool

I have the following configuration:
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Eisele@brezn:~/FH-Weihenstephan/Winter_Semester_200809/Uebungen>
The Program JDBCVersion.java which I copied out of the Oracle-Documentation looks like:
import java.sql.*;
import oracle.jdbc.*;
import oracle.jdbc.pool.OracleDataSource;
class JDBCVersion
public static void main (String args[]) throws SQLException
System.out.println("Java.Version = " + System.getProperty("java.version")) ;
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ods.setURL("jdbc:oracle:thin:scott/tiger@host:port:service");
Connection conn = ods.getConnection();
// Create Oracle DatabaseMetaData object
DatabaseMetaData meta = conn.getMetaData();
// gets driver info:
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I get the following error
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Java.Version = 1.4.2_11
Exception in thread "main" java.lang.NoClassDefFoundError: oracle/jdbc/pool/OracleDataSource
at JDBCVersion.main(JDBCVersion.java:10)
Eisele@brezn:~/FH-Weihenstephan/Winter_Semester_200809/Uebungen>
Can anyone help me out here and tell me, what I did wrong ?
Thanks in advance !
Rüdiger

Two thoughts.
The first is that 10.2.0.1 is unpatched. Why? It has been two years since its release and no one has applied 10.2.0.2, 10.2.0.3 or 10.2.0.4.
The second is that your question is not a database question but a Java question is you are more likely to get an answer that will help you if you post in a group where it is on-topic.

Exception in thread main java.lang.NoClassDefFoundError when Install 11g 2

Exception in thread main java.lang.NoClassDefFoundError when Install Oracle database 11g release 2 on redhat linux enterprise 5
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准备从以下地址启动 Oracle Universal Installer /tmp/OraInstall2009-12-01_11-25-58AM. 请稍候...[oracle@redhatlinux ~]$ Exception in thread "main" java.lang.NoClassDefFoundError
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I am getting the same exception. I tried using xhost_+ but it's still not working for me.
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Exception in thread "main" java.lang.NoClassDefFoundError
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at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1783)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:480)
at oracle.install.commons.util.Application.startup(Application.java:758)
at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:164)
at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:181)
at oracle.install.commons.base.driver.common.Installer.startup(Installer.java:265)
at oracle.install.ivw.db.driver.DBInstaller.startup(DBInstaller.java:114)
at oracle.install.ivw.db.driver.DBInstaller.main(DBInstaller.java:132)
Thanks in advance for the help!!
Also, this is all very new to me. So if you could provide a step-by-step answer I would really appreciate it.
Edited by: user9014123 on Jan 25, 2010 1:40 PM

Java.exe error - Exception in thread "main" java.lang.NoClassDefFoundError:

I've just started to take on java, and some examples from my learning source
show the
javac.exe fileincluded.java
to
java.exe fileincluded
method. Although I can compile fine, when I go to run I get a java.exe error - Exception in thread "main" java.lang.NoClassDefFoundError:.
I thought it was an environment variable problem as I'm running win xp.
I've gotten the bin directory included, and I've previously had visual studio .net installed
so the INCLUDE and LIB variables are set to those directories. I've tried to attach the java /lib and /bin directories by ";C:\PROGRAM FILES\JAVA\JDK1.5.0_02\LIB" etc,
and that didn't work. What can I do to fix this problem?

I get the I/O exception while reading: D:\Java\HelloApplet (The system cannot find the file specified). I have previously compiled HelloApplet.java into HelloApplet.class using javac.exe
the two include statements in the sample HelloApplet I'm using are
import java.applet.*;
import java.awt.*;
I also have a ComponentEventTest.java file which I've made into a class with these two
include statements:
import java.awt.*;
import java.awt.event.*;
I can however compile .java files which have no include statements.
I take it that my classpath is not set correctly. Like I said earlier, I'm using winxp
and trying to set the classpath variable under system. I have tried under user too. The path names I've tried setting are C:\Program Files\Java\jdk1.5.0_02\, C:\Program Files\Java\jdk1.5.0_02\lib, C:\Program Files\Java\jdk1.5.0_02\include, and C:\Program Files\Java\jdk1.5.0_02\;C:\Program Files\Java\jdk1.5.0_02\lib;C:\Program Files\Java\jdk1.5.0_02\include.
How can I correct this? If it's possible, I would like to set a variable in windows
versus having to type extra commands at the command prompt everytime I try
to run a java class with java.exe. Any help would be much appreciated

Exception in thread "main" java.lang.NoClassDefFoundError: JDBCVersion

I using the example in the online jdbc docs shown below:
+++++++
import java.sql.*;
import oracle.jdbc.*;
import oracle.jdbc.pool.OracleDataSource;
class JDBCVersion
public static void main (String args[]) throws SQLException
OracleDataSource ods = new OracleDataSource();
//ods.setURL("jdbc:oracle:thin:scott/tiger@host:port:service");
ods.setURL("jdbc:oracle:thin:scott/tiger@testdb:1521:xe");
Connection conn = ods.getConnection();
// Create Oracle DatabaseMetaData object
DatabaseMetaData meta = conn.getMetaData();
// gets driver info:
System.out.println("JDBC driver version is " + meta.getDriverVersion());
I compiles without a problem:
C:\temp>javac JDBCVersion.java -classpath c:\instantclient\ojdbc6.jar
+++
I keep getting the following error when attempting to run the
C:\temp>java JDBCVersion -classpath c:\instantclient\ojdbc6.jar
Exception in thread "main" java.lang.NoClassDefFoundError: JDBCVersion
Caused by: java.lang.ClassNotFoundException: JDBCVersion
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: JDBCVersion. Program will exit.
I attempted to set my classpath using the parameter -classpath
and setting the environment variable in the ontrol panel, system, adv, env. vars.
I still get the error.
Can someone provide some specific idea why this is occuring?
Thanks in advance,
Larry

Thanks for the response. I also found a solution by setting the classpath using the environment variable in xp. I tried to set the environmental variable before, but I did it incorrectly(unknown to me); I set it up in the system variable portion. I was surfing around for solutions and found the proper way to set the value with this link. I hope it saves some else several days of work that it cost me :)
http://faculty.ed.umuc.edu/~arnoldyl/NetBeansTutorials/Setting-Classpath.html

Exception in thread "main" java.lang.NoClassDefFoundError: server Caused by

I get this error when running a batch file
Exception in thread "main" java.lang.NoClassDefFoundError: serverCaused by: java.lang.ClassNotFoundException: server
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Press any key to continue . . .
I need to get this fixed because i can't run or compile

Hi,
It quite simple.
It is missing with weblogic.jar with in classpath.
Try to set weblogic.jar with in pre-classpath in setdomainEnv.sh file and restart the server
You will find the weblogic.jar with in %WLS_Home% / server / lib
Hope this should help you.
Regards,
Kal

Exception in thread "main" java.lang.NoClassDefFoundError: BlueCheese

I'm writing a simple swing application. It compiles, but I can't get it to run... I always get this error:
Exception in thread "main" java.lang.NoClassDefFoundError: BlueCheese
Caused by: java.lang.ClassNotFoundException: BlueCheese
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
I tried running another app, and it works just fine. Here is the source code:
package zing.blueCheese;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class BlueCheese
     private JFrame frame;
     private static void createGUI()
          JFrame frame = new JFrame("FileSmasher");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          ImageIcon icon = new ImageIcon("Mac.gif");
          JTabbedPane tabbedPane = new JTabbedPane();
          JLabel label = new JLabel("<html><font size=6>1:</font></html>");
          JPanel panel = new JPanel();
          tabbedPane.addTab("Parse", icon, panel, "Smash a file");
          panel = new JPanel();
          tabbedPane.addTab("Concatenate", icon, panel, "Assemble the smashed pieces of a file");
          frame.pack();
          frame.setVisible(true);
     public static void main(String[] args)
          SwingUtilities.invokeLater(new Runnable()
               public void run()
                    createGUI();
Any suggestions?

yawmark wrote:
java -cp . zing.blueCheese.BlueCheeseExecuted in the directory containing the "zing" subdirectory (which itself should contain "blueCheese/BlueCheese.class"). Note the "dot" and spaces, which mean "add the current directory to the classpath". Alternately, you could add the full path to the directory containing "zing" to the classpath. Example:java -cp . path/to/dir zing.blueCheese.BlueCheese~Shouldn't that be (with appropriate path separator)
java -cp.:path/to/dir zing.blueCheese.BlueCheese?

Can't get by Exception in thread "main" java.lang.NoClassDefFoundError:

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