Writing Equations in Connect

Does anyone know a good solution for writing equations and doing math on the Adobe Connect whiteboard?
Is the best solution just to use a wacom table and write them by hand?
Thanks in advance for your responses!
Peter

PeterBreis0807 wrote:
Richard
I have just set up a quick guide as to how you may achieve this and keep a good degree of flexibility:
http://www.freeforum101.com/iworktipsntrick/viewtopic.php?p=55&mforum=iworktipsn trick#55
Peter
Hi Peter:
Thanks for your inspired idea, rather clever.
For other readers I'll mention that I had to revamp your idea slightly, using two columns I accomplished a statement with 3 items in the D and 3 in the N
See For example [img]http://img.skitch.com/20090901-f55epqij6s75n4j72u7u8utmxi.preview.jpg[/img]
Click for full size - [color=#A7A7A7]Uploaded with plasq's Skitch[/color]
Thanks.

Similar Messages

Writing equations in words, how to accomplish

I want to express a number of equations on words, as opposed to symbols.
Since the word descriptions are often six words or more I'm looking for a solution in PAGES that allows me to create what are essentially text boxes side by side. Then of course this has to be done for numerator and denominator so that we get N/D.
I tried using text boxes inside text boxes but pages doesn't appear to support TBs inside TBs.
If anyone has solved this problem within PAGES I'd be grateful for suggestions.
My only other thought on how to do this is to create an image in Pixalmator or similar program and then insert the whole image into PAGES.
Thanks

PeterBreis0807 wrote:
Richard
I have just set up a quick guide as to how you may achieve this and keep a good degree of flexibility:
http://www.freeforum101.com/iworktipsntrick/viewtopic.php?p=55&mforum=iworktipsn trick#55
Peter
Hi Peter:
Thanks for your inspired idea, rather clever.
For other readers I'll mention that I had to revamp your idea slightly, using two columns I accomplished a statement with 3 items in the D and 3 in the N
See For example [img]http://img.skitch.com/20090901-f55epqij6s75n4j72u7u8utmxi.preview.jpg[/img]
Click for full size - [color=#A7A7A7]Uploaded with plasq's Skitch[/color]
Thanks.

Late 2010 MacBook Pro Cannot Connect to Internet

Hello, First time posting a question here.
I have a late 2010 Macbook Pro 15" i5, 2.4Ghz, currently running 10.6.8. At my apartment the provided wifi has been spotty for several months. In the past I have been able to turn off my airport using the dock at the top of my screen, wait a little while (30 seconds or so) and turn it back on. I would get wifi back and then be able to resume to use the Internet.
Recently, however, I have been having extreme issues with connectivity. I will see full bars on the airport display but my dropbox icon (what I use to test connectivity real quick) will keep indicating that I am not connected to the internet. For the past week I was able to get internet with an ethernet cable plugged into the router, ONLY if my airport was turned off.
Now I cannot even get internet through the ethernet cable.
Here are some things I have been able to eliminate.
Bad computer hardware - My computer instantly connects to the wifi at my family home, on campus and where ever I have ever been. I get reliable, un-interupted internet connectivity.
Bad Wifi signal - All other devices (including the ipad I am writing this on) connect immediately to the wifi with no problems with connectivity.
About my computer:
OS: 10.6.8
CPU: intel i5 2.4 GHz
Memory: 4Gb 1067 MHz DDR3
About my Router:
Ubee DWW365 Wireless Cable Modem
ISP: Charter
I have indeed rebooted my router, but not luck yet.

Hi Cyberviper42,
I understand that you are seeing some issues with your connection to the internet on your computer. I have an article for you that will help you troubleshoot this issue:
Wi-Fi: How to troubleshoot Wi-Fi connectivity - Apple Support
https://support.apple.com/en-us/HT202222
Thanks for coming to the Apple Support Communities!
Regards,
Braden

I cannot get my Macbook Pro retina to connect to my BT Home hub.

Hi,
I cannot get my Macbook Pro Retina to connect to my BT homehub either wirelessly or through ethernet using the thunderbolt adaptor. I know that this is a problem with my IP address as in Network Settings it tells me that
'Thunderbolt Ethernet has a self-assigned IP address and will not be able to connect to the Internet.'
I know that my internet connection is fine as I can plug the ethernet cable back into my PC and it works fine. Also, my phone and ipad connect wirelessly just fine.
Bt have told me to contact Apple, but I can't get hold of Apple till tomorrow.
Amyone know how to overcome this?
I did also find my IP address and enter it manually, at which point netwrok settings showed my ethernet connection as green and connected, but it still wasn't working.
Thanks

Same for wifi. I have put in my IP address manually for the wifi network and it has gone green and connects to the hub, but gives me an exclamation mark on the wifi bar and still doesnt connect to the internet.
I am writing this whilst connected to the internet on the same laptop but connected to BTFON which is a really slow public network I have access to as a BT customer.

Problem in using connection pool in netbeans

Hi,
I am using Net Beans and Sun java application server and Derby as database.
I have created data connnection and also configure JDBC resources (ie. DataResource and connectionPool).
Now i want to use this connection pool in my class, I have create one DataConnection class and put this code
private javax.sql.DataSource getMyDatabase () throws javax.naming.NamingException {
        javax.naming.Context c = new javax.naming.InitialContext();
        return (javax.sql.DataSource) c.lookup("java:comp/env/jdbc/myDatabase");
    }I got this code by right click and selecting Enterprise Resources->Use Data, But while running i got the exception
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
Plz tell me How can we overcome this exception and is there any other way do use connection pool.
Thanks.

Thanks bamkin-ov-lesta,
DbConnectionBroker is good for servlet or other java application. If i use this class, it is like i am writing code for connection pool. I am using NetBeans and sun java application server which provide its default connection pool configuration and i want to use that only.
And I am not getting which class name to be set in environment variable under what name in the following exception.
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
Help me plz.

DB connection between Two servlets

Hi,
I have Two servlets, servlet1,servlet2.
In servlet1, I have written Connection Pooling using java class and In the INIT method I'm writing the database connection,
My Question is, How to use the same DB connection in servlet2 ?
here is my code (some portion) :
public class abc_internal extends HttpServlet
{ private ConnectionPool pool;
Statement stmt = null;
Statement stmt1 = null;
Statement stmt2 = null;
ResultSet abc = null;
ResultSet Name_Header = null;
private static final String CONTENT_TYPE = "text/html; charset=windows-1252";
public void init(ServletConfig config) throws ServletException
try
pool = new ConnectionPool("oracle.jdbc.driver.OracleDriver","jdbc:oracle:thin:@IPADDRESS:1526:DB NAME","USERNAME","PASSWORD",5);
}catch(Exception e)
throw new UnavailableException("Couldn't create Connection Pool.....");
PLEASE Help me...
Thanks in advance.

Thanks for the reply... I'm new to Java...I would appreciate, if you can show me as a example for the above code...
Thanks.

DB2 Connection pooling

Hi friends :
I am writing a DB2 Connection pooling class.In oracle we set the mininmum connections like
ocacheimpl = new OracleConnectionCacheImpl(DataSource );
ocacheimpl.setMinLimit(minConnections)
ocacheimpl.setMaxLimit()
Like this is there any methods to set the min connections in the DB2.
Please help me in this.
Thanks
Mandava

Hi,
i´ve got the same problem as Stephen.
can anybody check my start-script, in my eyes it seems
to be correct concerning the paths.
thanks for urgent help
Andreas Koch
NetFidelity Consulting GmbH
[email protected]
Stephen Davies <[email protected]> wrote:
Scott,
is SQLLIB\bin on the path?
Joseph Weinstein wrote:
Hi. For 5.1, you need to edit your startWebLogic script,
and add the DB2 driver classes to the weblogic.classpath.
Also any native libraries needed for this driver should be
available to the WLS process.
Can you run a simple DB2 JDBC example program (no WebLogic code)
in this environment?
Joe
scott rogan wrote:
i'm having difficulty setting up a DB2 connection pool in WL 5.1.
Getting this error on server startup: <E> <JDBC Pool> Failed to create
connection pool "db2Pool"weblogic.common.ResourceException: Could not
load 'COM.ibm.db2.jdbc.app.DB2Driver' because System.loadLibrary threw
java.lang.UnsatisfiedLinkError with the message '[IBM][JDBC Driver]
CLI0647E Error allocating DB2 environment handle, rc=db2jdbc.'.any
ideas?thanks
Stephen Davies
Davies Consulting Pty. Ltd.
Sydney, Australia
Ph. +61 2 9527 4274
[startWebLogic.sh]

WRT54G, looses connection to internet..

Hello, i have a problem wich i dont know if it is because of my router or my modem. I got ADSL. So i need your help how i can figure out what this depends on, what happens is that i loose connection quite often in like 30 seconds, then it works again.

Disconnect your router out of the equation and connect a computer straight to your modem, see if you loose the internet connection from your modem as well...
Do you loose the internet connection just on one computer or multiple computer's ?
Do you loose the Internet Connection on wired computer's or wireless computer's or both ?

Having trouble keeping the printer connected to eprint server.

Printer has no problem connecting to Verizon FIOS router. However the Eprint server does not always think it is connected to the internet. Sometime cyclying router power works, sometime not. While writing this a connection to the ePrint server was made and the job printed. It is an HP Officejet 6500A Plus.

follow this iOS: Troubleshooting Wi-Fi networks and connections

Unable to connect to hotel wifi

I have one hotel that I visit on occasion, and always have problems with the internet wifi connection. It is a major brand name hotel, and my phone and iPad (which im writing this on),connect up just fine. I have deleted the network and restarted it but still have no connection. My MacBook pro shows strong signal strength. Any ideas what I can do on my end as I'm not sure it's the hotels issue. My fellow traveler has no problem connecting with his oc

Go to settings, general, about, and you will see "version." That will indicate what your operating system is such as 5.0.1 which is the most recent upgrade.
As for the wifi, you might try going to settings, then general, then at the bottom reset, then click on reset network settings. Back out of everything and then when you log back onto your wifi it will ask you for your local password (assuming you gave it one when your router was set up). Enter it and you should be good for go. At least this worked for me.
Good luck.

In desperate need for help - Lag spikes through a wired connection

Hello. I've recently started experiencing random lag spikes. I have no idea what the cause of these could be. I've used this router for almost 2 yrs now and never ran into a problem. I've done extensive searches and updated my old firmware to the new one following the strict intructions. I've also been trying to figure out how to log my network to provide more information on my situation. I've downloaded kiwisyslogd but have no idea how to use it... Any help with that would also be greatly appreciated.
-Tesm
EXTRA INFO - I called my isp (cox) and they told me everything on their line is fine. I'm running on a 15mb line. Internet connection works and everything else is fine except for periodic lag spikes that really interupt my gaming and web browsing severly.
router: wrt54g v2
Firmware: DD-WRT v23 SP2 (09/15/06) std then reverted back to linksys latest firmware... still no solution.
Tried isolating the router out of the equation. Connected pc directly to the modem and had no problems. Connected the router back in and lag spikes came back. Pc is connected through ethernet wire.
Tried disabling windows wireless zero service - no help
Pinging a game server i tested the lag at. No problems when I pinged the server with the router. But when I joined the server with the game. I experience the lag spikes. Could this mean its not my router? When I plug the modem directly to my pc this problem doesn't happen.
PING 75.126.174.198 (75.126.174.198): 56 data bytes
64 bytes from 75.126.174.198: icmp_seq=2 ttl=119 time=44.9 ms
64 bytes from 75.126.174.198: icmp_seq=3 ttl=119 time=46.8 ms
64 bytes from 75.126.174.198: icmp_seq=4 ttl=119 time=44.1 ms
64 bytes from 75.126.174.198: icmp_seq=5 ttl=119 time=45.9 ms
64 bytes from 75.126.174.198: icmp_seq=6 ttl=119 time=47.6 ms
64 bytes from 75.126.174.198: icmp_seq=7 ttl=119 time=44.3 ms
64 bytes from 75.126.174.198: icmp_seq=8 ttl=119 time=41.5 ms
64 bytes from 75.126.174.198: icmp_seq=9 ttl=119 time=45.0 ms
64 bytes from 75.126.174.198: icmp_seq=10 ttl=119 time=42.7 ms
64 bytes from 75.126.174.198: icmp_seq=11 ttl=119 time=45.2 ms
64 bytes from 75.126.174.198: icmp_seq=12 ttl=119 time=48.5 ms
64 bytes from 75.126.174.198: icmp_seq=13 ttl=119 time=47.0 ms
64 bytes from 75.126.174.198: icmp_seq=23 ttl=119 time=45.9 ms
64 bytes from 75.126.174.198: icmp_seq=24 ttl=119 time=42.2 ms
64 bytes from 75.126.174.198: icmp_seq=25 ttl=119 time=44.0 ms
64 bytes from 75.126.174.198: icmp_seq=26 ttl=119 time=43.2 ms
64 bytes from 75.126.174.198: icmp_seq=27 ttl=119 time=47.1 ms
64 bytes from 75.126.174.198: icmp_seq=28 ttl=119 time=42.8 ms
64 bytes from 75.126.174.198: icmp_seq=29 ttl=119 time=43.3 ms
64 bytes from 75.126.174.198: icmp_seq=30 ttl=119 time=44.9 ms
64 bytes from 75.126.174.198: icmp_seq=41 ttl=119 time=44.7 ms
64 bytes from 75.126.174.198: icmp_seq=42 ttl=119 time=44.1 ms
64 bytes from 75.126.174.198: icmp_seq=43 ttl=119 time=44.8 ms
64 bytes from 75.126.174.198: icmp_seq=44 ttl=119 time=46.1 ms
64 bytes from 75.126.174.198: icmp_seq=45 ttl=119 time=47.7 ms
64 bytes from 75.126.174.198: icmp_seq=46 ttl=119 time=44.8 ms
64 bytes from 75.126.174.198: icmp_seq=47 ttl=119 time=46.1 ms
64 bytes from 75.126.174.198: icmp_seq=59 ttl=119 time=44.7 ms
64 bytes from 75.126.174.198: icmp_seq=60 ttl=119 time=42.2 ms
64 bytes from 75.126.174.198: icmp_seq=61 ttl=119 time=41.9 ms
64 bytes from 75.126.174.198: icmp_seq=62 ttl=119 time=45.0 ms
64 bytes from 75.126.174.198: icmp_seq=63 ttl=119 time=44.3 ms
64 bytes from 75.126.174.198: icmp_seq=64 ttl=119 time=45.5 ms
64 bytes from 75.126.174.198: icmp_seq=65 ttl=119 time=45.1 ms
64 bytes from 75.126.174.198: icmp_seq=77 ttl=119 time=47.1 ms
64 bytes from 75.126.174.198: icmp_seq=78 ttl=119 time=48.7 ms
64 bytes from 75.126.174.198: icmp_seq=79 ttl=119 time=45.9 ms
64 bytes from 75.126.174.198: icmp_seq=80 ttl=119 time=45.5 ms
64 bytes from 75.126.174.198: icmp_seq=81 ttl=119 time=48.7 ms
64 bytes from 75.126.174.198: icmp_seq=82 ttl=119 time=44.1 ms
64 bytes from 75.126.174.198: icmp_seq=83 ttl=119 time=43.5 ms
64 bytes from 75.126.174.198: icmp_seq=92 ttl=119 time=46.7 ms
64 bytes from 75.126.174.198: icmp_seq=93 ttl=119 time=44.8 ms
64 bytes from 75.126.174.198: icmp_seq=94 ttl=119 time=45.8 ms
64 bytes from 75.126.174.198: icmp_seq=95 ttl=119 time=47.0 ms
64 bytes from 75.126.174.198: icmp_seq=96 ttl=119 time=42.3 ms
64 bytes from 75.126.174.198: icmp_seq=97 ttl=119 time=45.6 ms
64 bytes from 75.126.174.198: icmp_seq=98 ttl=119 time=42.6 ms
64 bytes from 75.126.174.198: icmp_seq=99 ttl=119 time=42.3 ms
64 bytes from 75.126.174.198: icmp_seq=107 ttl=119 time=43.6 ms"
system:
Thermaltake Amor Case
AMD Opteron 165 Dual Core CPU
EVGA nforce4 SLI Motherboard
Hitachi 250GB SATA2 Hard Drive
OCZ EL Platinum 1GB CAS 2 RAM
EVGA 7800GTX Graphics Card
Sunbeam NUUO 550Watt Power Supply

which game server are you trying to connect to ?? did u try forwarding ports for that game server ?? do u have any firewall running on the computer??

Connecting to remote server slows down computer

We've been connecting to a remote server for years, and only recently have this problem:
When connected to a remote server, the entire system runs sluggish. This only happens with one remote server -- other connections don't cause this problem. The system is slow even if we are not reading or writing -- just the connection seems to cause the slowdown.
What could be causing this?

You need to enable WinRM on your system. Open powershell on the system you want to connect to remotely and enable it by typing:
C:>enable-psremoting -force
WinRM already is set up to receive requests on this machine.
WinRM has been updated for remote management.
Created a WinRM listener on HTTP://* to accept WS-Man requests to any IP on this machine.
This will configure WinRM for you. Check out this technet powershell training session.
http://technet.microsoft.com/en-au/events/ee676904.aspx
ref: http://social.technet.microsoft.com/Forums/en/ITCG/thread/54417b48-68ae-40ac-a303-74aed4e7e81a
Satyam MCITP, MCPD

Network connection issues

Good evening,
i have a BB Z10 with which i am having some networking issues...................the device shows that it is connected to WIFI and data services are on etc, but it seem as thought device is not connected. Internet is not working and my email addresses are also kaput. A message in the email settings said in red writing 'device not connected to network' even though the Network Connection settings showed it should be. i can also still make calls and BBM. Any ideas/suggestion please?
Solved!
Go to Solution.

Hi and Welcome to the Community!
With a strong carrier network signal (e.g., not merely WiFi), I suggest the following steps, in order, even if they seem redundant to what you have already tried (step 1 should result in a message coming to your BB...please wait for that before proceeding to the next step):
1) Register HRT
KB00510 How to register a BlackBerry smartphone with the wireless network
Please wait for one "registration" message to arrive
2) Reboot
Pre-BB10 Devices ONLY. With power ON, remove the back cover and pull out the battery. Wait about a minute then replace the battery and cover. Power up and wait patiently through the long reboot -- ~5 minutes.
BB10 Devices. Hold the top button down until the counter reaches zero. Wait for the device to be fully shut down (e.g., nothing at all displayed on the screen, no LED lights, etc.). Hold the top button until the red LED is lit. Wait through the full boot-up process. IF this fails, you can attempt the battery-pull method above, but it is normally NOT recommended unless nothing else works.
See if things have returned to good operation. Like all computing devices, BB's suffer from memory leaks and such...with a hard reboot being the best cure.
Hopefully that will get things going again for you! If not, then you should contact your mobile service provider for formal support.
Good luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
Join our BBM Channels
BSCF General Channel
PIN: C0001B7B4 Display/Scan Bar Code
Knowledge Base Updates
PIN: C0005A9AA Display/Scan Bar Code

Server/Client Socket Connection

Hi, I am trying to program a simple server/client socket connection program, the main function is to send and receive objects between them. I somehow went wrong and the connection between them keeps terminating right after establishing connection. Is there anything I can do to resolve this?
This is gonnna be kinda long post.. sorry. These are the code that starts and ends the socket connection. I'm kinda desperate for this to work.. so thanks in advance.
appinterface.java:
//Set up server to receive communications; process connections. 1x.
     public void runServer () {
          try {
               //Create a ServerSocket
               server = new ServerSocket(12345, 100);
               try {
                         waitForSockConnection();     //Wait for a connection.
                         getSockStreams();               //Get input & output streams.
                         establishDbConnection();     //Open up connection to DB.
               finally {
                         closeSockConnection(); //Close connection.
          //Process problems with I/O
          catch(IOException ioException) {
               displayMessage("I/O Error: " + ioException);
               runServer();
     //Wait for connection to arrive, then display connection info
     private void waitForSockConnection() throws IOException {
          displayMessage("Waiting for connection");
          connection = server.accept(); //Allow server to accept connection.
          displayMessage("Connection received from: " + connection.getInetAddress().getHostName());
     //Get streams to send and receive data.
     private void getSockStreams() throws IOException {
          //Set up output streams for objects
          ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());
          output.flush(); //Flush output buffer to send header information.
          //Set up input stream for objects.
          ObjectInputStream input = new ObjectInputStream(connection.getInputStream());
          try {
          classHolderServer holderObj = new classHolderServer();
          holderObj = (classHolderServer)input.readObject();
          processSockConnection(holderObj);
          displayMessage("Got I/O Streams");
          //Catch problems reading from client
          catch (ClassNotFoundException classNotFoundException) {
                         displayMessage("Unknown object type received");
     //Process connection with client.
     private void processSockConnection(classHolderServer holderObj) throws IOException {
          //sendMessage("Connection Successful");
                    //True is query, and false is auth.
                    if(holderObj.type1==true)
                         processDbStatement(holderObj.type2, holderObj.sqlquery);
                    else {
                         authCheck(holderObj.userName, holderObj.passWord);
                         if(!authCheck)
                         closeDbConnection();
     //Send messages to client.
     private void sendMessage(String message) {
          // Send message to client
          try {
               ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());
               output.flush();
               output.writeObject(message);
               output.flush();
               displayMessage("Message Sent:" + message);
          catch (IOException ioException) {
               displayMessage("\nError Sending Message: " + message);
     //Send object to client
     private void sendObject(Object holderObj) {
               // Send object to client
               try {
                    ObjectOutputStream output = new ObjectOutputStream(connection.getOutputStream());
                    output.writeObject(holderObj);
                    output.flush();
                    displayMessage("\nObject sent");
               //Process problems sending object
               catch (IOException ioException) {
                    displayMessage("\nError writing object");
     //Close streams and socket.
     private void closeSockConnection() {
               displayMessage("Terminating connection");
               try {
                    //output.close();
                    //input.close();
                    connection.close();
                    closeDbConnection();
                    this.userName = null;
                    this.passWord = null;
                    this.receiverId = 0;
                    this.authCheck = false;
               catch (IOException ioException) {
                    displayMessage("I/O Error: " + ioException);
          }Client:
private void runClient() {
          //Connect to sever and process messages from server.
          try{
               connectToServer();
               getStreams();
               processConnection();
          //Server closed connection.
          catch(EOFException eofException) {
               //displayMessage"Client Terminated Connection");
          //Process problems communicating with server.
          catch (IOException ioException) {
               //displayMessage"Communication Problem");
          finally {
               closeConnection();
     //Connect to server
     private void connectToServer() throws IOException {
          //displayMessage("Attempting connection\n");
          //Create Socket to make connection to sever.
          client = new Socket(InetAddress.getByName(chatServer), 12345);
          //Display connection information
          //displayMessage("Connected to: " + client.getInetAddress().getHostName());
     //Get streams to send and receive data.
     private void getStreams() throws IOException {
          //Set up output stream for objects.
          ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());
          output.flush(); //Flush outout buffer to send header information.
          //Set up input stream for objects.
          ObjectInputStream input = new ObjectInputStream(client.getInputStream());
          //displayMessage("\nGot I/O streams\n");
     //Close socket connection.
     private void closeConnection() {
          //displayMessage("\nClosing connection");
          try {
               ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());
               output.close();
               ObjectInputStream input = new ObjectInputStream(client.getInputStream());
               input.close();
               client.close();
               authCheck=false;
          catch(IOException ioException) {
               ioException.printStackTrace();
     //Send data to server.
     private void sendObject(classHolderClient queryObj) {
          try {
               output.writeObject(queryObj);
               output.flush();
               //displayMessage("Please wait..");
          //Process problems sending object.
          catch (IOException ioException) {
               //displayMessage("\nError writing object");
     //Process connection with server.
     private void processConnection() throws IOException {
          try{
               classHolderClient holderObj = new classHolderClient();
               holderObj = (classHolderClient)input.readObject();
               if(holderObj.type2==2) {
                         this.authCheck=holderObj.authCheck;
                         this.userName=holderObj.userName;
                         this.passWord=holderObj.passWord;
          catch(ClassNotFoundException classNotFoundException) {
               //displayMessage(classNotFoundException);
          }

private ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());Like this? But this will cause an error asking me to catch an exception:
C:\Documents and Settings\Moon\My Documents\Navi Projects\School\OOPJ Project\Prototype\GPS-Lite v2 Alpha Debugger\client.java:41: unreported exception java.io.IOException; must be caught or declared to be thrown
        private ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());
                                                                                         ^
C:\Documents and Settings\Moon\My Documents\Navi Projects\School\OOPJ Project\Prototype\GPS-Lite v2 Alpha Debugger\client.java:41: unreported exception java.io.IOException; must be caught or declared to be thrown
        private ObjectOutputStream output = new ObjectOutputStream(client.getOutputStream());
                                            ^
2 errors

NullPointerException was thrown while extracting a value from an instance

Dear all,
We have got a null point exception during commit call. According to the stack trace shown below, it seems that it is a problem due to instance variable accessor. As we know toplink use reflection to access the instance variable value. I am curious whether the exception we got is related to any class-loader setting. Thanks a lot.
=================
Stack Trace:
Exception [TOPLINK-69] (OracleAS TopLink - 10g (9.0.4.5) (Build 040930)): oracle
.toplink.exceptions.DescriptorException
Exception Description: A NullPointerException was thrown while extracting a valu
e from the instance variable [versionID] in the object [com.oocl.csc.frm.pom.tes
t.model.Company].
Internal Exception: java.lang.NullPointerException
Mapping: oracle.toplink.mappings.DirectToFieldMapping[versionID-->COMPANY.VERSIO
NID]
Descriptor: Descriptor(com.oocl.csc.frm.pom.test.model.Company --> [DatabaseTabl
e(COMPANY)])
at oracle.toplink.exceptions.DescriptorException.nullPointerWhileGetting
ValueThruInstanceVariableAccessor(DescriptorException.java:1022)
at oracle.toplink.internal.descriptors.InstanceVariableAttributeAccessor
.getAttributeValueFromObject(InstanceVariableAttributeAccessor.java:68)
at oracle.toplink.mappings.DatabaseMapping.getAttributeValueFromObject(D
atabaseMapping.java:304)
at oracle.toplink.mappings.DirectToFieldMapping.iterate(DirectToFieldMap
ping.java:355)
at oracle.toplink.internal.descriptors.ObjectBuilder.iterate(ObjectBuild
er.java:1438)
at oracle.toplink.internal.descriptors.DescriptorIterator.iterateReferen
ceObjects(DescriptorIterator.java:258)
at oracle.toplink.internal.descriptors.DescriptorIterator.startIteration
On(DescriptorIterator.java:407)
at oracle.toplink.publicinterface.UnitOfWork.discoverUnregisteredNewObje
cts(UnitOfWork.java:1368)
at oracle.toplink.publicinterface.UnitOfWork.discoverAllUnregisteredNewO
bjects(UnitOfWork.java:1290)
at oracle.toplink.publicinterface.UnitOfWork.assignSequenceNumbers(UnitO
fWork.java:326)
at oracle.toplink.publicinterface.UnitOfWork.collectAndPrepareObjectsFor
Commit(UnitOfWork.java:664)
at oracle.toplink.publicinterface.UnitOfWork.commitToDatabaseWithChangeS
et(UnitOfWork.java:1130)
at oracle.toplink.publicinterface.UnitOfWork.commitRootUnitOfWork(UnitOf
Work.java:956)
at oracle.toplink.publicinterface.UnitOfWork.commit(UnitOfWork.java:771)
====================
====================
Mapping Description:
<?xml version = '1.0' encoding = 'UTF-8'?>
<project>
<project-name>POM-TEST</project-name>
<login>
<database-login>
<platform>oracle.toplink.oraclespecific.Oracle9Platform</platform>
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
<connection-url>jdbc:oracle:thin:@sjcngdb2:1521:cdrfrmdv</connection-ur
l>
<user-name>pomowner</user-name>
<password>BB742416276274A47F360CCDD2711570</password>
<uses-native-sequencing>false</uses-native-sequencing>
<sequence-preallocation-size>50</sequence-preallocation-size>
<sequence-table>SEQUENCE</sequence-table>
<sequence-name-field>SEQ_NAME</sequence-name-field>
<sequence-counter-field>SEQ_COUNT</sequence-counter-field>
<should-bind-all-parameters>false</should-bind-all-parameters>
<should-cache-all-statements>false</should-cache-all-statements>
<uses-byte-array-binding>true</uses-byte-array-binding>
<uses-string-binding>false</uses-string-binding>
<uses-streams-for-binding>false</uses-streams-for-binding>
<should-force-field-names-to-upper-case>false</should-force-field-names
-to-upper-case>
<should-optimize-data-conversion>true</should-optimize-data-conversion>
<should-trim-strings>true</should-trim-strings>
<uses-batch-writing>false</uses-batch-writing>
<uses-jdbc-batch-writing>true</uses-jdbc-batch-writing>
<uses-external-connection-pooling>false</uses-external-connection-pooli
ng>
<uses-external-transaction-controller>false</uses-external-transaction-
controller>
<type>oracle.toplink.sessions.DatabaseLogin</type>
</database-login>
</login>
<java-class>com.oocl.csc.frm.pom.test.model.Company</java-class>
<tables>
<table>COMPANY</table>
</tables>
<primary-key-fields>
<field>COMPANY.COMPANY_KEY</field>
</primary-key-fields>
<descriptor-type-value>Normal</descriptor-type-value>
<identity-map-class>oracle.toplink.internal.identitymaps.SoftCacheWeakI
dentityMap</identity-map-class>
<remote-identity-map-class>oracle.toplink.internal.identitymaps.SoftCac
heWeakIdentityMap</remote-identity-map-class>
<identity-map-size>100</identity-map-size>
<remote-identity-map-size>100</remote-identity-map-size>
<should-always-refresh-cache>false</should-always-refresh-cache>
<should-always-refresh-cache-on-remote>false</should-always-refresh-cac
he-on-remote>
<should-only-refresh-cache-if-newer-version>false</should-only-refresh-
cache-if-newer-version>
<should-disable-cache-hits>false</should-disable-cache-hits>
<should-disable-cache-hits-on-remote>false</should-disable-cache-hits-o
n-remote>
<alias>Company</alias>
<copy-policy>
<descriptor-copy-policy>
<type>oracle.toplink.internal.descriptors.CopyPolicy</type>
</descriptor-copy-policy>
</copy-policy>
<instantiation-policy>
<descriptor-instantiation-policy>
<type>oracle.toplink.internal.descriptors.InstantiationPolicy</ty
pe>
</descriptor-instantiation-policy>
</instantiation-policy>
<query-manager>
<descriptor-query-manager>
<existence-check>Check cache</existence-check>
</descriptor-query-manager>
</query-manager>
<event-manager>
<descriptor-event-manager empty-aggregate="true"/>
</event-manager>
<mappings>
<database-mapping>
<attribute-name>companyKey</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.COMPANY_KEY</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>contact</attribute-name>
<read-only>false</read-only>
<reference-class>com.oocl.csc.frm.pom.test.model.Contact</referen
ce-class>
<is-private-owned>false</is-private-owned>
<uses-batch-reading>false</uses-batch-reading>
<indirection-policy>
<mapping-indirection-policy>
<type>oracle.toplink.internal.indirection.NoIndirectionPoli
cy</type>
</mapping-indirection-policy>
</indirection-policy>
<uses-joining>false</uses-joining>
<foreign-key-fields>
<field>COMPANY.CONTACT_OID</field>
</foreign-key-fields>
<source-to-target-key-field-associations>
<association>
<association-key>COMPANY.CONTACT_OID</association-key>
<association-value>CONTACT.POID</association-value>
</association>
</source-to-target-key-field-associations>
<type>oracle.toplink.mappings.OneToOneMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>createdBy</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.CREATED_BY</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>creationClientID</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.CREATION_CLIENTID</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>creationTime</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.CREATION_TIME</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>employeeList</attribute-name>
<read-only>false</read-only>
<reference-class>com.oocl.csc.frm.pom.test.model.Person</referenc
e-class>
<is-private-owned>false</is-private-owned>
<uses-batch-reading>false</uses-batch-reading>
<indirection-policy>
<mapping-indirection-policy>
<type>oracle.toplink.internal.indirection.NoIndirectionPoli
cy</type>
</mapping-indirection-policy>
</indirection-policy>
<container-policy>
<mapping-container-policy>
<container-class>com.oocl.csc.frm.pom.impl.FWPersistentArra
yList</container-class>
<type>oracle.toplink.internal.queryframework.ListContainerP
olicy</type>
</mapping-container-policy>
</container-policy>
<relation-table>EMPLOYEMENT</relation-table>
<source-key-fields>
<field>COMPANY.COMPANY_KEY</field>
</source-key-fields>
<source-relation-key-fields>
<field>EMPLOYEMENT.EMPLOYER_KEY</field>
</source-relation-key-fields>
<target-key-fields>
<field>PERSON.POID</field>
</target-key-fields>
<target-relation-key-fields>
<field>EMPLOYEMENT.EMPLOYEE_ID</field>
</target-relation-key-fields>
<type>oracle.toplink.mappings.ManyToManyMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>lastUpdateClientID</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.LAST_UPDATE_CLIENTID</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>lastUpdatedBy</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.LAST_UPDATED_BY</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>lastUpdateTime</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.LAST_UPDATE_TIME</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>name</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.NAME</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>partner</attribute-name>
<read-only>false</read-only>
<reference-class>com.oocl.csc.frm.pom.test.model.Company</referen
ce-class>
<is-private-owned>false</is-private-owned>
<uses-batch-reading>false</uses-batch-reading>
<indirection-policy>
<mapping-indirection-policy>
<type>oracle.toplink.internal.indirection.NoIndirectionPoli
cy</type>
</mapping-indirection-policy>
</indirection-policy>
<uses-joining>false</uses-joining>
<foreign-key-fields>
<field>COMPANY.PARTNER</field>
</foreign-key-fields>
<source-to-target-key-field-associations>
<association>
<association-key>COMPANY.PARTNER</association-key>
<association-value>COMPANY.COMPANY_KEY</association-value>
</association>
</source-to-target-key-field-associations>
<type>oracle.toplink.mappings.OneToOneMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>persistentCtxt</attribute-name>
<read-only>false</read-only>
<reference-class>com.oocl.csc.frm.pom.impl.FWPOMPersistentContext
</reference-class>
<is-null-allowed>false</is-null-allowed>
<aggregate-to-source-field-name-associations>
<association>
<association-key>OWNERID</association-key>
<association-value>COMPANY.OWNERID</association-value>
</association>
<association>
<association-key>ROOTID</association-key>
<association-value>COMPANY.ROOTID</association-value>
</association>
</aggregate-to-source-field-name-associations>
<type>oracle.toplink.mappings.AggregateObjectMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>poid</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.POID</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>version</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.VERSION</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
<database-mapping>
<attribute-name>versionID</attribute-name>
<read-only>false</read-only>
<field-name>COMPANY.VERSIONID</field-name>
<type>oracle.toplink.mappings.DirectToFieldMapping</type>
</database-mapping>
</mappings>
<type>oracle.toplink.publicinterface.Descriptor</type>
</descriptor>
</descriptors>
</project>
====================
====================
Session Creation Method:
SessionBroker broker = (SessionBroker) manager.getSession(brokerName, Thread.currentThread().getContextClassLoader());
broker.getLogin().getPlatform().getConversionManager().setLoader(Thread.currentThread().getContextClassLoader());
====================
===================
Class Hierarchy:
Object extends> ..xxx.. extends> FWObject extends> Company
The problematic attribute -- versionID -- is defined at "FWObject" level.
===================
===================
Environment Configuration:
Application Server version: 10.1.2
TopLink version : 9.0.4.5
TopLink classpath: specified at container level
FWObject classpath: specified at container level
Company classpath: specified at application level
===================
Thanks and regards,
William

Dear All,
We have loaded the toplink.jar to container level instead of application level. Don't know whether it is a possible source of error. Moreover, what is the purpose of loading antlr.jar? What is this jar for?
Thanks and regards,
William

Writing Equations in Connect

Similar Messages

Maybe you are looking for