Refresh the content of the JTable with a xml file

Posted on 2010-01-11
Medium Priority
Last Modified: 2013-12-22
Hello Expert:
             I want to ask you a question about JTable with a xml file. I have written a program which can be used to load a xml file into a JTbale Swing GUI to show some informaiton about the xml file. Now I want to add a function. up till to now I can load the xml file and show the information in the JTable. It works well, no problem. But If I want to load a new xml file to dispaly the new information, I must run the programe again. It means the program can not remove the old content, and refresh to show the new infromation about the new xml file. Can you give a demo to know how to slove this problem. Thank!
Question by:tomatolei2009
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LVL 40

Expert Comment

by:Gurvinder Pal Singh
ID: 26282796
How are you rendering the data on JTable now?
Can you list down the steps?


Author Comment

ID: 26283928
Hello gurvinder372
         I have upload my source code. Run the  InitialStateTest.java. You can see the result. I have given two example file to show the result. If you have time, you can test it by yourself.  It is used to show the information about <InitialState> and use the label form <UserInterface>. My problem is when I have loaded one file in the gui contianer, and now I wan to load a new one. I must run the program again! How Can I remove the old one and refresh to show the new one. Thanks!

Author Comment

ID: 26291686
I think the solution perhaps is to change the constructor InitialStateContainer.java. And I have add the method initialStatePanel.removeAll();   initialStatePanel.revalidate(); initialStatePanel.repaint(); But it does not refresh the content if load a new file.   Can anyone tell me how to slove this problem?????  thanks!!
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LVL 37

Accepted Solution

zzynx earned 2000 total points
ID: 26303902
This is what I did:

I took the scenario.xml file and made a copy of it with in which I changed the id's of

            <PhysicalObject type="Checkpoint" id="1000" width="5" height="5" x="100" y="100"/>
            <PhysicalObject type="Checkpoint" id="1001" width="5" height="5" x="100" y="400"/>
            <PhysicalObject type="Checkpoint" id="1002" width="5" height="5" x="400" y="400"/>
            <PhysicalObject type="Checkpoint" id="1003" width="5" height="5" x="400" y="100"/>

into 2000, 2001, 2002 and 2003 (to be able to see the difference after the load)

1) I ran your program
2) Opened scenario.xml
3) Opened scenario2.xml => no visual changes

In InitialStateTest.java I added these lines:

                  if (isContainer!=null) {

right before

    isContainer = new InitialStateContainer(xmlText.toString(), file, frame);

When I redo the above test of loading scenario2.xml after having loaded scenario.xml I see the difference.
LVL 25

Expert Comment

by:Tomas Helgi Johannsson
ID: 26304253

Look at the fireTableChanged and fireTableStructureChanged() events which are derived from AbstractTableModel

and these examples

Also the tableModelListener and setTableModel method as seen in the following examples

Hope this helps.

   Tomas Helgi

Author Closing Comment

ID: 31675413
Thank you very much zzynx, It costs me much time to solve this problem. you are real an expert! Thank a lot.
Thanks www.experts-exchange.com!! 
Here is real a nice place
LVL 37

Expert Comment

ID: 26305142
>> Thank you very much zzynx
You're welcome.

Thanx 4 axxepting

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