Challenging question about JTable rowSelection

Hi,
I got to highlight/change foreground color of certain rows based on given criteria.I could
hightlight rows but if use up/down arrow keys selection/highlight disappears.How to make it
remain highligted?
Thanx in advance
mo

Hi,
Let me explain the problem clearly.My JTable has more than 3000 records.So I let the user enter
some values and highlight records which meets that values.so i may have to highlight multiple rows which are not contiguous.I could highlight rows but my problem is if i press UP/DOWN arrow keys
to move backward/forward my highlight diappears and new row get selected.
Hope u can understand my problem.Any help would be appreciated.
mo

Similar Messages

Question about JTable...

Hi people,
I have a question about class JTable of Java and how can i add dynamic content to it. More specific i would like
to create a table which has a dynamic content at its rows and columns (etc i will use a method which will generate
dates of 1/02/05 to 1/03/05 format and i will add them as titles in the row section of my table and in the column
section i will add times of the day divided in quarters like 00.00 00.15 00.30 00.45..... just like a calendar) Any ideas????

Use the DefaultTableModel. It has addRow and addColumn methods.

A question about JTable .setValueAt(...)

hi, I write some code which use the Table to represent the data fetched from MS-ACCESS.
the problem is about the UpdateObject(...) method which is in the implement of the AbstractTableModel method setAtValue(). when transfered OBJECT TYPE is java.lang.String, I can't get the correct result in the JTable view.
by the way, I use java2SE 6 Beta version
my code is as below, could somebody point me out my problem
public class MyTableModel extends AbstractTableModel {
    private ResultSet rs ;
    private ResultSetMetaData rsmd;
    /** Creates a new instance of MyTableModel */
    public MyTableModel() {
        try {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        String url = "jdbc:odbc:CoffeeBreak";
        try {
            Connection con = DriverManager.getConnection(url,"","");
            String strSQL = "SELECT * FROM COFFEES";
            Statement pSt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
            rs = pSt.executeQuery(strSQL);
            rsmd = rs.getMetaData();
        } catch (SQLException ex) {
            ex.printStackTrace();
/* table model retrieve the Class type of a column method here*/
public Class getColumnClass(int c){
        try {
            return Class.forName(rsmd.getColumnClassName(c+1));
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        return String.class;
//method of update database and JTable after user edited a table cell
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
        try {
            int concurrency = rs.getConcurrency();
            if(concurrency == 1008){
                rs.absolute(rowIndex+1);    //the JTable row index is start from 0,so plus 1
                rs.updateObject(columnIndex+1, aValue);//the JTable column index is start from 0, so plus 1
                rs.updateRow();
        } catch (SQLException ex) {
            ex.printStackTrace();
    } when the column type is about java.lang.String, the cell's result is incorrect, it looks like "[B@1f8f72f" and database can't update.

Yes, I have implemented them all.
I paste them all now. thank all here, first.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
* @author qhj
public class MyTableModel extends AbstractTableModel {
    /** Creates a new instance of MyTableModel */
    private ResultSet rs ;
    private ResultSetMetaData rsmd;
    public MyTableModel() {
        try {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        String url = "jdbc:odbc:CoffeeBreak";
        try {
            Connection con = DriverManager.getConnection(url,"","");
            String strSQL = "SELECT * FROM COFFEES";
            Statement pSt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
            rs = pSt.executeQuery(strSQL);
            rsmd = rs.getMetaData();
        } catch (SQLException ex) {
            ex.printStackTrace();
    public int getRowCount() {
        try {
            rs.last();
            return rs.getRow();
        } catch (SQLException ex) {
            ex.printStackTrace();
        return 0;
    public int getColumnCount() {
        try {
            return rsmd.getColumnCount();
        } catch (SQLException ex) {
            ex.printStackTrace();
        return 0;
    public Object getValueAt(int rowIndex, int columnIndex) {
        try {
            rs.absolute(rowIndex+1);
            return rs.getObject(columnIndex+1);
        } catch (SQLException ex) {
            ex.printStackTrace();
        return null;
    public String getColumnName(int column){
        try {
            return rsmd.getColumnName(column+1);
        } catch (SQLException ex) {
            ex.printStackTrace();
        return "N/A";
    public Class getColumnClass(int c){
        try {
            return Class.forName(rsmd.getColumnClassName(c+1));
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        return String.class;
    public boolean isCellEditable(int row, int col) {
        //Note that the data/cell address is constant,
        //no matter where the cell appears onscreen.
        return true;
    public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
        try {
            int concurrency = rs.getConcurrency();
            if(concurrency == 1008){
                rs.absolute(rowIndex+1);
                rs.updateObject(columnIndex+1, aValue);
                rs.updateRow();
        } catch (SQLException ex) {
            ex.printStackTrace();
        fireTableDataChanged();
}

2 questions about JTable

Hello everyone.
I have one easy question :
- How can I rename a column name ?
And I have one less easier :
- How can I save my JTable datas in a excel file ?

A JTable gets the names of the column from the TableModel. So you need to either modify the model that the table is using or make a custom model to have different column names. If you change the column names while the table is displaying you also have to fire the correct event so that the table will redraw itself with the new column name. You could also try getting the TableColumn from the TableColumnModel, and changing the identifier of the column.
As for writing out in .xls format
http://forum.java.sun.com/thread.jsp?forum=31&thread=247192

Some questions about JTable formatting

Hi everybody, I am currently developing a project using JTable. I found difficulty on modifying JTable cell width and setting style of JTableHeader?
Does anybody have idea on that? Thanks.

[url http://java.sun.com/docs/books/tutorial/uiswing/components/table.html]How to Use Tables

About the challenge questions of OIM

Regarding the users who come from the trusted source, how to deal with their challenge questions? Because we can not Recon the password from trusted source,so the user can not login to OIM to set the answers. Any suggestions?
Thanks.

Let the oim user record be created with the default password (same as user id).
Write an event handler that updates the password with the new password (randomly generated password that meets your password complexity rules (if one exists in your scemario).
After the trusted recon cycle completes, write a scheduler that will send a mail to the user's manager with the user's oim user id and password. you will need to iterate through all the users in the system and for each record fetch the manager id, fetch the manager's mail address and then send a mail to that email address with the current recor's user login and password.
Makes sense?

I need to reset my challenge questions

I need to reset my challenge questions.

Reset Security Questions
Frequently asked questions about Apple ID
Manage My Apple ID
Or you can email iTunes Support at iTunes Store Support.
If all else fails:
1. Go to: Apple Express Lane;
2. Under Product Categories choose iTunes;
3. Then choose iTunes Store;
4. Then choose Account Management;
5. Now choose iTunes Store Security and answer the bullet questions, then click
      Continue;
6. Sign in with your Apple ID and press Continue;
7. Under Contact Options fill out the information and advise iTunes that you would
      like your security/challenge questions reset;
8. Click Send/Continue.
You should get a response within 24 hours by email.
In the event you are unsuccessful then contact AppleCare - Contacting Apple for support and service.
Another user had success doing the following:
I got some help from an apple assistant on the phone. It is kind of round about way to get in.
Here is what he said to do and it is working for me...
a. on the device that is asking you for the security questions go to "settings", > "store" >
      tap the Apple ID and choose view"Apple ID" and sign in.
b. Tap on payment information and add a credit/debit card of your preference then select
      "done", in the upper right corner
c. sign out and back into iTunes on the device by going to "settings"> "store" > tap the
      Apple ID and choose "sign-out" > Tap "sign -in" > "use existing Apple ID" and you
      should be asked to verify your security code for the credit /debit card and NOT the
      security questions.
d. At this time you can remove the card by going back in to edit the payment info and
      selecting "none" as the card type then saving the changes by selecting "done". You
      should now be able to use your iTunes store credit without answering the security
      questions.
It's working for me ...I just have to put in my 3 digit security pin from the credit card I am using.
Good Luck friends!

Best practices about JTables.

Hi,
I'm programming in Java since 5 months ago. Now I'm developing an application that uses tables to present information from a database. This is my first time handling tables in Java. I've read Sun's Swing tutorial about JTable, and several information on other websites, but they limit to table's syntax and not in best practices.
So I decided what I think is a proper way to handle data from a table, but I'm not sure that is the best way.Let me tell you the general steps I'm going through:
1) I query employee data from Java DB (using EclipseLink JPA), and load it in an ArrayList.
2) I use this list to create the JTable, prior transformation to an Object[][] and feeding this into a custom TableModel.
3) From now on, if I need to search an object on the table, I search it on the list and then with the resulting index, I get it from the table. This is possible because I keep the same row order on the table and on the list.
4) If I need to insert an item on the table, I do it also on the list, and so forth if I'd need to remove or modify an element.
Is the technique I'm using a best practice? I'm not sure that having to keep synchronized the table with the list is the better way to handle this, but I don't know how I'd deal just with the table, for instance to efficiently search an item or to sort the table, without doing that first on a list.
Are there any best practices in dealing with tables?
Thank you!
Francisco.

Hi Joachim,
What I'm doing now is extending DefaultTableModel instead of implementing AbstractTableModel. This is to save implementing methods I don't need and because I inherit methods like addRow from DefaultTableModel. Let me paste the private class:
protected class MyTableModel extends DefaultTableModel {
        private Object[][] datos;
        public MyTableModel(Object[][] datos, Object[] nombreColumnas) {
            super(datos, nombreColumnas);
            this.datos = datos;
        @Override
        public boolean isCellEditable(int fila, int columna) {
            return false;
        @Override
        public Class getColumnClass(int col) {
            return getValueAt(0, col).getClass();
    }What you are suggesting me, if I well understood, is to register MyTableModel as a ListSelectionListener, so changes on the List will be observed by the table? In that case, if I add, change or remove an element from the list, I could add, change or remove that element from the table.
Another question: is it possible to only use the list to create the table, but then managing everything just with the table, without using a list?
Thanks.
Francisco.

A Question about LV Database Connectivity Toolkit

Hello everyone!
I have a question about using LabVIEW DataBase Connectivity Toolkit 1.0.2 that eagerly needs your help. I don't know how to programmaticlly create a new Microsoft Access(.mdb)file (Not a new table in a existing Database)using LabVIEW Database Connectivity Toolkit1.0.2. As you know, usually we can set up the connection by creating a Universal Data Link (.udl) file and inputting the path to the DB Tools Open Connec VI in the LabVIEW DataBase Connectivity Toolkit. However, searching a table within an existing database containing a great many tables is a toilfulif job. If I want to use a new DataBase file with the date and time string as its name to log my acquisition data in each measurement process, how to do? I am sure someone of you must can resolve my question, and thanks very much for your help.

I don't know what your real design considerations are here but, from I understand from your post, this is a really bad way to go about the process of logging data -- IF you want to be able to do significant ad hoc or stored procedures analyses after it has been collected. Using separate MDB files for data that ONLY differs by one field (namely that date) is not the most efficient way to organize it. What would be much more efficient would a joined table including the date and a reference ID of some sort for the various measurements that were done. That way your stored procedures for looking at ALL measurements of type X would be very simple going across ALL dates. Making such a comparison across multiple MDB files is a much more challenging process AND doing the original data collection in that way doesn't really gain you anything.
Generally, if something is difficult to do in the DCT (Database Connectivity Toolkit) it's because it's a "not good thing" to do within MDBs. I know that others probably disagree with that but I've worked with Access since it's initial release and other RDBMs prior to that both through compiled tools, Unix scripts, etc. You may, of course, still choose to proceed in the way you've described and that may work excellently for you.

Challenge Question Max Length

Hi,
We're running into an issue with one of the challenge questions that we've defined. The length of the question is about 74 characters long, and we're able to save it in the 'Lookup.WebClient.Questions' lookup def successfully. The problem occurs when a user tries to answer this particular question, the page just refreshes there's no error on the screen but the logs show an error while trying to save the answers:
ERROR,28 Jan 2010 13:14:47,573,[XELLERATE.ACCOUNTMANAGEMENT],Class/Method: tcUserOperationsBean/setChallengeValuesForSelfData encounter some problems: maoErrors:Insert failed.
ERROR,28 Jan 2010 13:14:47,573,[XELLERATE.ACCOUNTMANAGEMENT],Class/Method: tcUserOperationsBean/setChallengeValuesForSelfData encounter some problems: Insert failed.
Thor.API.Exceptions.tcAPIException: Insert failed.
     at com.thortech.xl.ejb.beansimpl.tcUserOperationsBean.setChallengeValuesForSelfData(Unknown Source)
     at com.thortech.xl.ejb.beansimpl.tcUserOperationsBean.setChallengeValuesForSelf(Unknown Source)
     at com.thortech.xl.ejb.beans.tcUserOperationsSession.setChallengeValuesForSelf(Unknown Source)
     at com.thortech.xl.ejb.beans.tcUserOperations_voj9p2_EOImpl.setChallengeValuesForSelf(tcUserOperations_voj9p2_EOImpl.java:2128)
     at Thor.API.Operations.tcUserOperationsClient.setChallengeValuesForSelf(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at Thor.API.Base.SecurityInvocationHandler$1.run(Unknown Source)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.security.Security.runAs(Security.java:41)
     at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(Unknown Source)
     at Thor.API.Base.SecurityInvocationHandler.invoke(Unknown Source)
     at $Proxy61.setChallengeValuesForSelf(Unknown Source)
     at com.thortech.xl.webclient.actions.tcChangeChallengeQuestionsAction.saveChallengeAnswersConfirm(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:280)
     at com.thortech.xl.webclient.actions.tcLookupDispatchAction.execute(Unknown Source)
     at com.thortech.xl.webclient.actions.tcActionBase.execute(Unknown Source)
     at com.thortech.xl.webclient.actions.tcAction.execute(Unknown Source)
     at com.thortech.xl.webclient.actions.tcChangeChallengeQuestionsAction.execute(Unknown Source)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
I did some investigating and found that if a questions's 'Code Key' (which is the part that's displayed on the form) happens to be longer than 63 characters this issue occurs.....does anyone know of any workarounds to this....maybe some configuration somewhere???....Thanks in advance for your help!

I am able to see error on the console.
Try this command on database of OIM:
ALTER TABLE PCQ MODIFY PCQ_QUESTION VARCHAR(200);
And then try.
Let me know the results.

OIM challenge question complete customisation

Hi,
I have two requirements.
1. My requirement is that instead of 3 Challenge questions for Forgot password feature in OIM, I need a text field which will ask for email id of the user. As soon as user gives the emailid and clicks on submit,the emailid should be validated with the userid provided and his lost password should be retrieved and mailed to his email id.
2. Instead of 3 Challenge questions for Forgot password feature in OIM, I need a text field which will ask for email id of the user. As soon as user gives the emailid and clicks on submit,the emailid should be validated with the userid provided. Then a new password should be set for that userid and a mail should be triggered with that new set password.
Please let me know which one of the above is possible and how to implement it??

If you talk about customization then you can implement both cases but I can't give you estimation like how much time will it take to implement.
2nd way will be easier than this.
If we think OOTB, if you go to lookup and make the question : Enter your email address
You can set Users' Email address as the answer for this question (May ways - sch task).
So whenever user want the new password then he will be asked a question "Enter your Email Address"
He has to provide email address and it will be authenticated against OIM and you can just create an entity adapter which will send the email to user with new password. No UI customization. Just little bit coding.
Even you don't need email. So no need to create entity adapter. So just go to Desogn console and do sm changes in System Configuration for questions like no of questions from 3 to 1 and do changes in lookup.

Questions about your new HP Products? HP Expert Day: January 14th, 2015

Thank you for coming to Expert Day! The event has now concluded.
To find out about future events, please visit this page.
On behalf of the Experts, I would like to thank you for coming to the Forum to connect with us. We hope you will return to the boards to share your experiences, both good and bad.
We will be holding more of these Expert Days on different topics in the months to come. We hope to see you then!
If you still have questions to ask, feel free to post them on the Forum – we always have experts online to help you out.
So, what is HP Expert Day?
Expert Day is an online event when HP employees join our Support Forums to answer questions about your HP products. And it’s FREE.
Ok, how do I get started?
It’s easy. Come out to the HP Support Forums, post your question, and wait for a response! We’ll have experts online covering our Notebook boards, Desktop boards, Tablet boards, and Printer and all-in-one boards.
We’ll also be covering the commercial products on the HP Enterprise Business Community. We’ll have experts online covering select boards on the Printing and Digital Imaging and Desktops and Workstations categories.
What if I need more information?
For more information and a complete schedule of previous events, check out this post on the forums.
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No. This time we’ll have experts and volunteers online across the globe, answering questions on the English, Simplified Chinese, and Korean forums. Here’s the information:
Enterprise Business Forum: January 14th 7:00am to 12:00pm and 6:00pm to 11:00pm Pacific Time
Korean Forum: January 15th 10am to 6pm Korea Time
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Looking forward to seeing you on January 14th!
I am an HP employee.

My HP, purchased in June 2012, died on Saturday. I was working in recently installed Photoshop, walked away from my computer to answer the phone and when I came back the screen was blank. When I turned it on, I got a Windows Error Recovery message. The computer was locked and wouldn't let me move the arrow keys up or down and hitting f8 didn't do anything.
I'm not happy with HP. Any suggestions?

Have questions about your Creative Cloud or Subscription Membership?

You can find answers to several questions regarding membership to our subscription services. Please see Membership troubleshooting | Creative Cloud - http://helpx.adobe.com/x-productkb/policy-pricing/membership-subscription-troubleshooting- creative-cloud.html for additional information. You can find information on such topics as:
I need help completeing my new purchase or upgrade.
I want to change the credit card on my account.
I have a question about my membership price or statement charges.
I want to change my membership: upgrade, renew, or restart.
I want to cancel my membership.
How do I access my account information or change update notifications?

Branching to new discussion.
Christym16625842 you are welcome to utilize the process listed in Creative Cloud Help | Install, update, or uninstall apps to install and evaluate the applications included with a Creative Cloud Membership. The software is fully supported on recent Mac computers. You can find the system requirements for the Creative Cloud at System requirements | Creative Cloud.

Questions about using the Voice Memos app

I'm currently an Android user, but will be getting an iPhone 6 soon. My most used app is the voice memos app on my Android phone. I have a couple questions about the iPhone's built-in voice memos app.
-Am I able to transfer my voice memos from my Android phone to my iPhone, so my recordings from my Android app will show up in the iPhone's voice memos app?
-When exporting voice memos from the iPhone to computer, are recordings in MP3 format? If not, what format are they in?
-In your opinion, how is the recording quality of the voice memos app?

You cannot import your Android voice memos to your iPhone's voice memo app. You might be able to play the Android memos and have the iPhone pick up the audio and record it.
Here is the writeup about sending voice memos from the iPhone to your computer (from the iPhone User Guide):
App quality is excellent.

Re: Question about the Satellite P300-18Z

Hello everyone,
I have a couple of questions about the Satellite P300-18Z.
What "video out" does this laptop have? (DVI, s-video or d-sub)
Can I link the laptop up to a LCD-TV and watch movies on a resolution of 1080p? (full-HD)
What is the warranty on this laptop?

Hello
According the notebook specification Satellite P300-18Z has follow interfaces:
DVI - No DVI port available
HDMI - HDMI-out (HDMI out port available)
Headphone Jack - External Headphone Jack (Stereo) available
.link - iLink (Firewire) port available
Line in Jack - No Line in Jack port available
Line out Jack - No Line Out Jack available
Microphone Jack - External Micrphone Jack
TV-out - port available (S-Video port)
VGA - VGA (External monitor port RGB port)
Also you can connect it to your LCD TV using HDMI cable.
Warranty is country specific and clarifies this with your local dealer but I know that all Toshiba products have 1 year standard warranty and also 1 year international warranty. you can of course expand it.

Challenging question about JTable rowSelection

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