NoClassDefFoundError----- please help me

really i am appreciating your feedback soon
Why is it happening ?
i got exception in my application
Exception is
javax.servlet.ServletException: Error allocating a servlet instance
Root Cause
java.lang.NoClassDefFoundError: LoginAction (wrong name: CallMonitor/LoginAction)

i got a null pointer exception in my code...
I found by it . Its all getting connection object .....
In jsp code
ServletContext context = null;
          Object contextGet = context.getAttribute("connection");
          InsertBean ib = new InsertBean();
          ArrayList al = ib.sendQuestion(contextGet);
          Iterator itr = al.iterator();
               while (itr.hasNext())
                    Object element = itr.next();
}Object contextGet = context.getAttribute("connection");
Here connection i set as attribute in Listener class
context is an implicit object in jsp ....
directly i accessing through connection object . i got error is that cannot find the symbol (context)
Message was edited by:
kannankalli
Message was edited by:
kannankalli

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Please Help! Can't get my applet to work!!

PLEASE HELP
I have been trying to get an applet to work which when viewed in an applet viewer works fine.
HOWEVER, when I try to view it through the browser it will not be viewed. The html code I've used is very simple and you can see that below . I've downloaded the JAVA plugin but that doesn't work either!
The errors that come up say --- java.lang.ClassFormatError.Class already loaded
Then if the window is expanded says --- java.lang.NoClassDefFoundError:javax/swing/JApplet
I haven't a clue what's wrong!!
HTML CODE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<HTML>
<HEAD><TITLE>Chess Game
</TITLE>
</HEAD>
<BODY>
<applet Code ="ChessClient20.class" Width =450 Height =555>
</applet>
</BODY>
</html>
Thanks for any help!!

Thanks, have now found original mail. I think I've lost the plot. will check out those suggestions.

What is wrong with this!! please help

Hello friends,
I'm a learner and I have done lot of JDBC connectivity with Acess database, and now I want to connect java program with oracle database, but the problem is I have downloaded the oracle driver, set the classpath, and I have created the DataSource Name with MS-ODBC, I could able to compile but I'm getting run time exception, please help me with this. regards, shabeer.
the program is
import java.sql.*;
public class ShabeerJdbc {
public static void main(String args[]) {
// String url = "jdbc:oracle:thin:@imran:3339:shabeerjdbc";
Connection con;
String createString;
createString = "create table COFFEES " +
"(COF_NAME VARCHAR(32), " +
"SUP_ID INTEGER, " +
"PRICE FLOAT, " +
"SALES INTEGER, " +
"TOTAL INTEGER)";
Statement stmt;
try {
System.out.println("shabeer1");
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
System.out.println("shabeer2");
} catch(java.lang.Exception e) {
System.out.println("shabeer3");
System.err.print("ClassNotFoundException: ");
System.out.println("shabeer4");
System.err.println(e.getMessage());
try {
System.out.println("shabeer55");
con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:shabeerjdbc", "system", "mehar");
System.out.println("shabeer6");
stmt = con.createStatement();
System.out.println("shabeer7");
stmt.executeUpdate(createString);
stmt.close();
con.close();
} catch(SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
the run time error is ......
C:\JavaPractice>java ShabeerJdbc
shabeer1
shabeer2
shabeer55
Exception in thread "main" java.lang.NoClassDefFoundError: java/sql/Savepoint
at java.lang.ClassLoader.defineClass0(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$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)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:468)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ShabeerJdbc.main(ShabeerJdbc.java:38)
****************************************

HI Deriderj, thanks for your response, well I have changed the Datasourse name to SID which is "Imran" and still it is not working....do I need to download anymore driver or whether they be bundled with the ojdbc.jar, please advice me. What if I want to use another driver as you mentioned...not to use thin: what other drivers will be available for the Oracle9.2.0.1.0 please advice me, thanks a lot
My SID name is "Imran"
listening port is is 1521
odbc datasource name is "shabeerjdbc"
I'm a very biginner and I'm facing too much problem, please help me. Well I have got Oracle9.2.0.1.0 loaded as the database and soon after I intstalled it I have copied ojdbc14.jar into my java classpath and I'm trying to connect to this data base. I dont know what driver I should use, neither I downloaded any. I'm just mentioning thin: in my URL. But It is giving error, can u please tell me what driver should I mention in the URL, and why I'm getting this error, Here is the code that is compiling without errors.
import java.sql.*;
public class ShabeerJdbc {
public static void main(String args[]) {
Connection con;
String createString;
createString = "create table COFFEES " +
"(COF_NAME VARCHAR(32), " +
"SUP_ID INTEGER, " +
"PRICE FLOAT, " +
"SALES INTEGER, " +
"TOTAL INTEGER)";
Statement stmt;
try {
     System.out.println("shabeer1");
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
     System.out.println("shabeer2");
} catch(java.lang.Exception e) {
     System.out.println("shabeer3");
System.err.print("ClassNotFoundException: ");
     System.out.println("shabeer4");
System.err.println(e.getMessage());
try {
     System.out.println("shabeer55");
con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:Imran", "system", "mehar");
     System.out.println("shabeer6");
     stmt = con.createStatement();
     System.out.println("shabeer7");
     stmt.executeUpdate(createString);
stmt.close();
con.close();
} catch(SQLException ex) {
System.err.println("Sql Exception" + ex.getMessage());
************The runtime Error it is giving is *********************
C:\JavaPractice>java ShabeerJdbc
shabeer1
shabeer2
shabeer55
Exception in thread "main" java.lang.NoClassDefFoundError: java/sql/Savepoint
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:468)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ShabeerJdbc.main(ShabeerJdbc.java:38)
***************************** please help me....

NoClassDefFoundError----- please help me

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