Solved

Setting classpath and java.lang.ClassNotFoundException

Posted on 2006-06-24
7
772 Views
Last Modified: 2013-11-23
Hi,

I am trying to use cloudscape db and after setting classpath, I still get this error.

java.lang.ClassNotFoundException: COM.cloudscape.core.JDBCDriver
      at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
      at java.lang.Class.forName0(Native Method)
      at java.lang.Class.forName(Class.java:164)
      at StudentInfo.getConnect(StudentInfo.java:86)
      at StudentInfo.main(StudentInfo.java:109)

++++++++++++++
This is my classpath:

>echo %classpath%
.;C:\jakarta-tomcat-5.5.4\common\lib\servlet-api.jar; C:\jakarta-tomcat-5.5.4\co
mmon\lib\jsp-api.jar; C:\Sun\AppServer\lib\j2ee.jar; C:\jakarta-tomcat-5.5.4\web
apps\~dkim18\WEB-INF\classes.;C:\proj5\xerces.jar;C:\bea81\weblogic81\server\lib
\weblogic.jar;C:\cloudscape36\lib\cloudscape.jar;C:\cloudscape36\lib\client.jar
+++++++++++++
This is my code:

try {
                     
          String jdbcDriver = "COM.cloudscape.core.JDBCDriver";
                String dbURL = "jdbc:cloudscape:TextDB";
                String username = "username";
                      String passwd = "password";
      
                Class.forName(jdbcDriver).newInstance();      
           
                 conn = DriverManager.getConnection(dbURL, username, passwd);
               }
++++++++++++
Any clue?

thanks!
0
Comment
Question by:dkim18
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 16976343
Make sure

COM.cloudscape.core.JDBCDriver

is prefectly correct (case too)
0
 

Author Comment

by:dkim18
ID: 16976450
I believe it is correct.

try {
                   
         String jdbcDriver = "COM.cloudscape.core.JDBCDriver";
...
...
...
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 16976453
Can you post the output of

jar tf C:\cloudscape36\lib\cloudscape.jar

?
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:dkim18
ID: 16976463
COM/cloudscape/aggregates/AggregateDefinition.class
COM/cloudscape/aggregates/Aggregator.class
COM/cloudscape/authentication/Interface/AuthenticationException.clas
COM/cloudscape/authentication/Interface/AuthenticationScheme.class
COM/cloudscape/authentication/util/SimpleAuthenticationScheme.class
COM/cloudscape/core/AbstractDataSource.class
COM/cloudscape/core/BaseConnectionHandle.class
COM/cloudscape/core/BasicDataSource.class
COM/cloudscape/core/BootStrap.class
COM/cloudscape/core/CloudscapeServer.class
COM/cloudscape/core/CloudscapeServerTie.class
COM/cloudscape/core/DataSourceFactory.class
COM/cloudscape/core/GetUniqueIDInterface.class
COM/cloudscape/core/JDBCBoot.class
COM/cloudscape/core/JDBCDriver.class
COM/cloudscape/core/LocalConnectionPoolDataSource.class
COM/cloudscape/core/LocalPooledConnection.class
COM/cloudscape/core/modules.properties
COM/cloudscape/core/MonitorBoot.class
COM/cloudscape/core/MonitorLog.class
COM/cloudscape/core/PrintStreamMonitorLog.class
COM/cloudscape/core/RemoteXaDataSource.class
COM/cloudscape/core/RmiJdbcDriver.class
COM/cloudscape/core/WebLogicCloudscapeServerTie.class
COM/cloudscape/core/XaDataSource.class
COM/cloudscape/database/ConnectionInfo.class
COM/cloudscape/database/ConsistencyChecker.class
COM/cloudscape/database/Database.class
COM/cloudscape/database/Factory.class
COM/cloudscape/database/JavaSQLException.class
COM/cloudscape/database/JBMSException.class
COM/cloudscape/database/OptimizerTrace.class
COM/cloudscape/database/PropertyInfo.class
COM/cloudscape/database/TriggerExecutionContext.class
COM/cloudscape/database/UserUtility.class
COM/cloudscape/info/DBMS.properties
COM/cloudscape/info/license.properties
COM/cloudscape/info/LocaleNames.class
COM/cloudscape/info/ProductGenusNames.class
COM/cloudscape/info/ProductVersionHolder.class
COM/cloudscape/info/ProductVersionHolderJava2.class
COM/cloudscape/info/PropertyNames.class
COM/cloudscape/info/sysinfo.properties
COM/cloudscape/system/System.class
COM/cloudscape/system/UUIDFactory.class
COM/cloudscape/tools/dbclasses.class
COM/cloudscape/tools/FileExport.class
COM/cloudscape/tools/FileImport.class
COM/cloudscape/tools/ImportExportSQLException.class
COM/cloudscape/tools/sysinfo.class
COM/cloudscape/types/AliasInfo.class
COM/cloudscape/types/DatabaseInstant.class
COM/cloudscape/types/DefaultInfo.class
COM/cloudscape/types/DependableFinder.class
COM/cloudscape/types/ErrorInfo.class
COM/cloudscape/types/IndexDescriptor.class
COM/cloudscape/types/Inspectable.class
COM/cloudscape/types/JBMSExceptionSeverity.class
COM/cloudscape/types/ReferencedColumnsDescriptor.clas
COM/cloudscape/types/RunTimeStatistics.class
COM/cloudscape/types/TypeDescriptor.class
COM/cloudscape/types/TypeFactory.class
COM/cloudscape/types/UUID.class
COM/cloudscape/util/BitUtil.class
COM/cloudscape/util/DBClassLoad.class
COM/cloudscape/util/DriverUtil.class
COM/cloudscape/util/KeyGen.class
COM/cloudscape/vti/CloudscapeLogReader.class
COM/cloudscape/vti/ConglomerateNumToContainerId.class
COM/cloudscape/vti/ConglomerateNumToContainerIdHelper
COM/cloudscape/vti/ConglomerateNumToContainerIdMetaDa
COM/cloudscape/vti/ConglomInfo.class
COM/cloudscape/vti/ContainerIdToConglomerateNum.class
COM/cloudscape/vti/ContainerIdToConglomerateNumHelper
COM/cloudscape/vti/ContainerIdToConglomerateNumMetaDa
COM/cloudscape/vti/ErrorMessages.class
COM/cloudscape/vti/ErrorMessagesMetaData.class
COM/cloudscape/vti/ExternalQuery.class
COM/cloudscape/vti/GetProcColsMetaData.class
COM/cloudscape/vti/GetProcedureColumns.class
COM/cloudscape/vti/LockTable.class
COM/cloudscape/vti/LockTableMetaData.class
COM/cloudscape/vti/LogReaderMetaData.class
COM/cloudscape/vti/SpaceTable.class
COM/cloudscape/vti/SpaceTableMetaData.class
COM/cloudscape/vti/StatementDuration.class
COM/cloudscape/vti/StatementDurationMetaData.class
COM/cloudscape/vti/TransactionTable.class
COM/cloudscape/vti/TransactionTableMetaData.class
COM/cloudscape/vti/TriggerNewTransitionRows.class
COM/cloudscape/vti/TriggerOldTransitionRows.class
COM/cloudscape/vti/UpdatableVTITemplate.class
COM/cloudscape/vti/VTICosting.class
COM/cloudscape/vti/VTIEnvironment.class
COM/cloudscape/vti/VTIException.class
COM/cloudscape/vti/VTIMetaDataTemplate.class
COM/cloudscape/vti/VTITemplate.class
COM/cloudscape/vti20/UpdatableVTITemplate.class
COM/cloudscape/vti20/VTIMetaDataTemplate.class
COM/cloudscape/vti20/VTITemplate.class
COM/objectspace/jgl/Allocator.class
COM/objectspace/jgl/ArrayAdapter.class
COM/objectspace/jgl/BidirectionalIterator.class
COM/objectspace/jgl/BinaryFunction.class
COM/objectspace/jgl/BinaryPredicate.class
COM/objectspace/jgl/ArrayAdapter.class
COM/objectspace/jgl/BidirectionalIterator.class
COM/objectspace/jgl/BinaryFunction.class
COM/objectspace/jgl/BinaryPredicate.class
COM/objectspace/jgl/Comparing.class
COM/objectspace/jgl/Container.class
COM/objectspace/jgl/Counting.class
COM/objectspace/jgl/DList$DListNode.class
COM/objectspace/jgl/DList.class
COM/objectspace/jgl/DListIterator.class
COM/objectspace/jgl/EqualTo.class
COM/objectspace/jgl/Finding.class
COM/objectspace/jgl/ForwardIterator.class
COM/objectspace/jgl/HashComparator.class
COM/objectspace/jgl/Hashing.class
COM/objectspace/jgl/InputIterator.class
COM/objectspace/jgl/InsertIterator.class
COM/objectspace/jgl/IntArray.class
COM/objectspace/jgl/IntIterator.class
COM/objectspace/jgl/InvalidOperationException.class
COM/objectspace/jgl/MinusNumber.class
COM/objectspace/jgl/NumberHelper.class
COM/objectspace/jgl/OutputIterator.class
COM/objectspace/jgl/Pair.class
COM/objectspace/jgl/PlusNumber.class
COM/objectspace/jgl/Printing.class
COM/objectspace/jgl/Queue.class
COM/objectspace/jgl/RandomAccessIterator.class
COM/objectspace/jgl/Replacing.class
COM/objectspace/jgl/Sequence.class
COM/objectspace/jgl/SList$SListNode.class
COM/objectspace/jgl/SList.class
COM/objectspace/jgl/SListIterator.class
COM/objectspace/jgl/Sorting.class
COM/objectspace/jgl/UnaryPredicate.class
c8e/a/b.class
c8e/a/c.class
c8e/a/d.class
c8e/aa/a.class
c8e/aa/b.class
c8e/aa/c.class
c8e/ab/a.class
c8e/ab/b.class
c8e/ab/c.class
c8e/ab/d.class
c8e/ab/e.class
c8e/ab/f.class
c8e/ab/g.class
c8e/ab/h.class
c8e/ab/i.class
c8e/ab/j.class
c8e/ab/k.class
..
...
...
c8e/z/metadata.properties
c8e/z/n.class
c8e/z/o.class
c8e/z/p.class
c8e/z/q.class
c8e/z/r.class
c8e/z/s.class
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 300 total points
ID: 16976465
That's in order. Please post the command you're using to run
0
 

Author Comment

by:dkim18
ID: 16976502
the problem has been solved. i was running this app by using eclipse and didn't set classpath. my bad...
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 16976507
:-)
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Maven Project: Hibernate Dependencies Conflict 10 49
arguments to jar 5 39
Delete Android all or certain applications data programmatically 9 107
Coding for the first time 9 62
INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question