Error : class not found exception : com.mysql.jdbc.driver in Eclipse Tool

Hi
I have impoted project file in eclipse in new machine using option import from existing workbence . When i stat to debug this project ,
i am getting error as class not found exception : com.mysql.jdbc.driver . my project folder already consist of mysql .jar file in /web appls/web-inf folder.
Application is running successfully in other machine from where i took the application file. As this error appeared I also added jar file into project path as Project ---->properties-- build java path---libraries----add external jar file.
kindly hep me.

Sounds like an eclipse question - not a JDBC one.
But since eclipse is telling you it can't find it then it means it is not in the eclipse path. So you must add it. (The fact that it is somewhere is irrelevant - all that matters is it is not in the class path.)

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    try {
    ps.setString (1, username);
    ps.setString(2, password);
    ResultSet rset = ps.executeQuery ();
    if (!rset.next ())
    throw new RemoteException ("Invalid Password ");
    count = rset.getShort(1) ;
    return count ;
    } finally {
    ps.close();
    public String validateSearchAccess (String username, String
    password) throws SQLException, RemoteException
    String searchaccess = "" ;
    Connection conn =
    new oracle.jdbc.driver.OracleDriver().defaultConnection ();
    PreparedStatement ps =
    conn.prepareStatement ("select searchprofileaccess from
    useraccountinfo where username = ? and password = ?");
    try {
    ps.setString (1, username);
    ps.setString(2, password);
    ResultSet rset = ps.executeQuery ();
    if (!rset.next ())
    throw new RemoteException ("Access Denied for " +
    username );
    searchaccess = rset.getString(1) ;
    return searchaccess ;
    } finally {
    ps.close();
    Client program
    import mituser.MITUser;
    import mituser.MITUserHome;
    import oracle.aurora.jndi.sess_iiop.ServiceCtx;
    import javax.naming.Context;
    import javax.naming.InitialContext;
    import java.util.Hashtable;
    public class Client {
    public static void main (String [] args) throws Exception {
    int count = 0 ;
    String access = "" ;
    if (args.length != 4) {
    System.out.println("usage: Client serviceURL objectName
    user password");
    System.exit(1);
    String serviceURL = args [0];
    String objectName = args [1];
    String user = args [2];
    String password = args [3];
    Hashtable env = new Hashtable();
    env.put(Context.URL_PKG_PREFIXES, "oracle.aurora.jndi");
    env.put(Context.SECURITY_PRINCIPAL, user);
    env.put(Context.SECURITY_CREDENTIALS, password);
    env.put(Context.SECURITY_AUTHENTICATION,
    ServiceCtx.NON_SSL_LOGIN);
    Context ic = new InitialContext(env);
    MITUserHome home = (MITUserHome)ic.lookup (serviceURL +
    objectName);
    MITUser testBean = home.create ();
    count = testBean.validateUserName("MITA");
    if (count > 0 )
    System.out.println ("Valid User");
    else
    System.out.println ("Invalid User");
    count = testBean.validatePassword("MITA", "MITA");
    if (count > 0 )
    System.out.println ("Valid Password");
    else
    System.out.println ("Invalid Password");
    access = testBean.validateSearchAccess("MITA", "MITA");
    if ( access.equalsIgnoreCase("YES") )
    System.out.println ("Search Access Available");
    else
    System.out.println ("Search Access Denied");
    The Descriptor file
    // MIT UserBean EJB deployment descriptor
    SessionBean mituserServer.MITUserBean {
    BeanHomeName = "test/mitUserJDBCBean";
    RemoteInterfaceClassName = mituser.MITUser;
    HomeInterfaceClassName = mituser.MITUserHome;
    AllowedIdentities = {MIT};
    SessionTimeout = 20;
    StateManagementType = STATEFUL_SESSION;
    RunAsMode = CLIENT_IDENTITY;
    TransactionAttribute = TX_REQUIRED;
    Batch File for deploying the ejb
    @echo off
    if (%ORACLE_HOME%)==() goto usage
    if (%ORACLE_SERVICE%)==() goto usage
    if (%JDK_CLASSPATH%)==() goto usage
    @echo on
    set CLASSPATH=.;%ORACLE_HOME%\lib\aurora_client.jar;%ORACLE_HOME%
    \jdbc\lib\classes111.zip;%ORACLE_HOME%\sqlj\lib\translator.zip;%
    ORACLE_HOME%\lib\vbjorb.jar;%ORACLE_HOME%\lib\vbjapp.jar;%
    JDK_CLASSPATH%
    javac -g mituser\MITUser.java
    javac -g mituser\MITUserHome.java
    javac -g mituserServer\MITUserBean.java
    jar cf0 mituser.jar mituser\MITUser.class
    mituser\MITUserHome.class mituserServer\MITUserBean.class
    javac -g Client.java
    call deployejb -republish -temp temp -u mit -p mit -s %
    ORACLE_SERVICE% -descriptor mituser.ejb mituser.jar
    @echo off
    goto done
    :usage
    @echo -------------------------------------------------------
    @echo Following are the requirements to run this script
    @echo set ORACLE_HOME to installed Oracle home
    @echo set ORACLE_SERVICE to the CORBA service name of
    your databae
    @echo for example sess_iiop://localhost:2481:ORCL
    @echo set JDK_CLASSPATH to the full path of your JDK
    classes.zip
    @echo -------------------------------------------------------
    :done
    Batch file for running the cleint program
    @echo off
    if (%ORACLE_HOME%)==() goto usage
    if (%ORACLE_SERVICE%)==() goto usage
    if (%JDK_CLASSPATH%)==() goto usage
    @echo on
    set CLASSPATH=.;%ORACLE_HOME%\lib\aurora_client.jar;%ORACLE_HOME%
    \jdbc\lib\classes111.zip;%ORACLE_HOME%\sqlj\lib\translator.zip;%
    ORACLE_HOME%\lib\vbjorb.jar;%ORACLE_HOME%\lib\vbjapp.jar;%
    JDK_CLASSPATH%;server_generated.jar
    java Client %ORACLE_SERVICE% /test/mitUserJDBCBean mit mit
    @echo off
    goto done
    :usage
    @echo -------------------------------------------------------
    @echo Following are the requirements to run this script
    @echo set ORACLE_HOME to installed Oracle home
    @echo set ORACLE_SERVICE to the CORBA service name of
    your databae
    @echo for example sess_iiop://localhost:2481:ORCL
    @echo set JDK_CLASSPATH to the full path of your JDK
    classes.zip
    @echo -------------------------------------------------------
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    I know this is not strictly to do with JDBC but there appears to
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    I have created and published a EJB in Oracle 8i (in a particular
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    Home Interface
    package mituser ;
    import javax.ejb.*;
    import java.rmi.RemoteException;
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    public MITUser create()
    throws CreateException, RemoteException;
    Remote Interface
    package mituser ;
    import javax.ejb.EJBObject;
    import java.rmi.RemoteException;
    public interface MITUser extends EJBObject {
    public int validateUserName (String username)
    throws java.sql.SQLException, RemoteException;
    public int validatePassword (String username, String password)
    throws java.sql.SQLException, RemoteException;
    public String validateSearchAccess (String username, String
    password)
    throws java.sql.SQLException, RemoteException;
    Bean
    package mituserServer ;
    import java.sql.*;
    import java.rmi.RemoteException;
    import javax.ejb.*;
    public class MITUserBean implements SessionBean {
    SessionContext ctx;
    public void ejbCreate() throws CreateException,
    RemoteException {
    public void ejbActivate() {
    public void ejbPassivate() {
    public void ejbRemove() {
    public void setSessionContext(SessionContext ctx) {
    this.ctx = ctx;
    public int validateUserName (String username) throws
    SQLException, RemoteException
    int count = 0 ;
    Connection conn =
    new oracle.jdbc.driver.OracleDriver().defaultConnection ();
    PreparedStatement ps =
    conn.prepareStatement ("select count(username) from
    useraccountinfo where username = ?");
    try {
    ps.setString (1, username);
    ResultSet rset = ps.executeQuery ();
    if (!rset.next ())
    throw new RemoteException ("no registered user with User
    Name " + username);
    count = rset.getShort(1) ;
    return count ;
    } finally {
    ps.close();
    public int validatePassword (String username, String password)
    throws SQLException, RemoteException
    int count = 0 ;
    Connection conn =
    new oracle.jdbc.driver.OracleDriver().defaultConnection ();
    PreparedStatement ps =
    conn.prepareStatement ("select count(username) from
    useraccountinfo where username = ? and password = ?");
    try {
    ps.setString (1, username);
    ps.setString(2, password);
    ResultSet rset = ps.executeQuery ();
    if (!rset.next ())
    throw new RemoteException ("Invalid Password ");
    count = rset.getShort(1) ;
    return count ;
    } finally {
    ps.close();
    public String validateSearchAccess (String username, String
    password) throws SQLException, RemoteException
    String searchaccess = "" ;
    Connection conn =
    new oracle.jdbc.driver.OracleDriver().defaultConnection ();
    PreparedStatement ps =
    conn.prepareStatement ("select searchprofileaccess from
    useraccountinfo where username = ? and password = ?");
    try {
    ps.setString (1, username);
    ps.setString(2, password);
    ResultSet rset = ps.executeQuery ();
    if (!rset.next ())
    throw new RemoteException ("Access Denied for " +
    username );
    searchaccess = rset.getString(1) ;
    return searchaccess ;
    } finally {
    ps.close();
    Client program
    import mituser.MITUser;
    import mituser.MITUserHome;
    import oracle.aurora.jndi.sess_iiop.ServiceCtx;
    import javax.naming.Context;
    import javax.naming.InitialContext;
    import java.util.Hashtable;
    public class Client {
    public static void main (String [] args) throws Exception {
    int count = 0 ;
    String access = "" ;
    if (args.length != 4) {
    System.out.println("usage: Client serviceURL objectName
    user password");
    System.exit(1);
    String serviceURL = args [0];
    String objectName = args [1];
    String user = args [2];
    String password = args [3];
    Hashtable env = new Hashtable();
    env.put(Context.URL_PKG_PREFIXES, "oracle.aurora.jndi");
    env.put(Context.SECURITY_PRINCIPAL, user);
    env.put(Context.SECURITY_CREDENTIALS, password);
    env.put(Context.SECURITY_AUTHENTICATION,
    ServiceCtx.NON_SSL_LOGIN);
    Context ic = new InitialContext(env);
    MITUserHome home = (MITUserHome)ic.lookup (serviceURL +
    objectName);
    MITUser testBean = home.create ();
    count = testBean.validateUserName("MITA");
    if (count > 0 )
    System.out.println ("Valid User");
    else
    System.out.println ("Invalid User");
    count = testBean.validatePassword("MITA", "MITA");
    if (count > 0 )
    System.out.println ("Valid Password");
    else
    System.out.println ("Invalid Password");
    access = testBean.validateSearchAccess("MITA", "MITA");
    if ( access.equalsIgnoreCase("YES") )
    System.out.println ("Search Access Available");
    else
    System.out.println ("Search Access Denied");
    The Descriptor file
    // MIT UserBean EJB deployment descriptor
    SessionBean mituserServer.MITUserBean {
    BeanHomeName = "test/mitUserJDBCBean";
    RemoteInterfaceClassName = mituser.MITUser;
    HomeInterfaceClassName = mituser.MITUserHome;
    AllowedIdentities = {MIT};
    SessionTimeout = 20;
    StateManagementType = STATEFUL_SESSION;
    RunAsMode = CLIENT_IDENTITY;
    TransactionAttribute = TX_REQUIRED;
    Batch File for deploying the ejb
    @echo off
    if (%ORACLE_HOME%)==() goto usage
    if (%ORACLE_SERVICE%)==() goto usage
    if (%JDK_CLASSPATH%)==() goto usage
    @echo on
    set CLASSPATH=.;%ORACLE_HOME%\lib\aurora_client.jar;%ORACLE_HOME%
    \jdbc\lib\classes111.zip;%ORACLE_HOME%\sqlj\lib\translator.zip;%
    ORACLE_HOME%\lib\vbjorb.jar;%ORACLE_HOME%\lib\vbjapp.jar;%
    JDK_CLASSPATH%
    javac -g mituser\MITUser.java
    javac -g mituser\MITUserHome.java
    javac -g mituserServer\MITUserBean.java
    jar cf0 mituser.jar mituser\MITUser.class
    mituser\MITUserHome.class mituserServer\MITUserBean.class
    javac -g Client.java
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    ORACLE_SERVICE% -descriptor mituser.ejb mituser.jar
    @echo off
    goto done
    :usage
    @echo -------------------------------------------------------
    @echo Following are the requirements to run this script
    @echo set ORACLE_HOME to installed Oracle home
    @echo set ORACLE_SERVICE to the CORBA service name of
    your databae
    @echo for example sess_iiop://localhost:2481:ORCL
    @echo set JDK_CLASSPATH to the full path of your JDK
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    @echo -------------------------------------------------------
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    Batch file for running the cleint program
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    if (%ORACLE_SERVICE%)==() goto usage
    if (%JDK_CLASSPATH%)==() goto usage
    @echo on
    set CLASSPATH=.;%ORACLE_HOME%\lib\aurora_client.jar;%ORACLE_HOME%
    \jdbc\lib\classes111.zip;%ORACLE_HOME%\sqlj\lib\translator.zip;%
    ORACLE_HOME%\lib\vbjorb.jar;%ORACLE_HOME%\lib\vbjapp.jar;%
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    goto done
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    @echo -------------------------------------------------------
    @echo Following are the requirements to run this script
    @echo set ORACLE_HOME to installed Oracle home
    @echo set ORACLE_SERVICE to the CORBA service name of
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    @echo for example sess_iiop://localhost:2481:ORCL
    @echo set JDK_CLASSPATH to the full path of your JDK
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    import java.rmi.RemoteException;
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    try {
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    MyRemoteInterface obj = new MyServerImplementation();
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    Naming.rebind("rmi://localhost:1985/GetNames", obj);
    System.out.println("GetNames bound in registry");
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    public class MyRMIClient {
    *@param args*
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