Display data in JTable

I am trying to display data from database into the JTable swing component. I can see the table and the heading coming from the vector. I cannot see why the data from the databse table is not loaded on to the Jtable. I just get a table with 6 rows blank.
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.sql.*;
import java.util.*;
public class dataTable extends JApplet
String dbdriver="jdbc:oracle:thin:@ds1.ctateu.edu:1521:wpac";
String dbuser="system";
String dbpass="pass";
Container c;
JScrollPane jsp;
JTable table;
int v,h;
Connection connection;
Statement stmt;
ResultSet rs;
String param_start,param_end, param_disp_start, param_disp_end,param_shortdesc, param_longdesc;
public void init()
c= getContentPane();
c.setLayout (new BorderLayout());
v=ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;
h=ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS;
Vector heading = new Vector();
heading.addElement("Event Start Date");
heading.addElement("Event End Date");
heading.addElement("Display Start Date");
heading.addElement("Display End Date");
heading.addElement("Short Description");
heading.addElement("Long Description");
Vector data = new Vector();
try
Class.forName("oracle.jdbc.driver.OracleDriver");
connection=DriverManager.getConnection(dbdriver,dbuser,dbpass);
stmt=connection.createStatement();
rs= stmt.executeQuery("select * from univevents");
while(rs.next())
param_start = rs.getString("start_date");
param_end = rs.getString("end_date");
param_disp_start = rs.getString("display_start");
param_disp_end =rs.getString("display_end");
param_shortdesc = rs.getString("short_desc");
param_longdesc = rs.getString("long_desc");
catch (Exception e)
//JOptionPane.showMessageDialogue("Exception: "+e.getMessage());
data.addElement(param_start);
data.addElement(param_end);
data.addElement(param_disp_start);
data.addElement(param_disp_end);
data.addElement(param_shortdesc);
data.addElement(param_longdesc);
table = new JTable(data, heading);
jsp = new JScrollPane(table,v,h);
//Add scrollpane to container
c.add("Center",jsp);
}//init
}//JApplet

Your data vector should be a Vector of Vectors.
I think you need to change your loop to look something like this:
while(rs.next())
    Vector row = new Vector();
    row.addElement( rs.getString("start_date") );
    row.addElement( rs.getString("end_date") );
    row.addElement( rs.getString("display_start") );
    row.addElement( rs.getString("display_end") );
    row.addElement( rs.getString("short_desc") );
    row.addElement( rs.getString("long_desc") );
    data.addElement( row );
} Then remove your data.addElement() statements found outside the loop.

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by the way, my program is as follows
* Damn Java ..
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Database data into JTables

Hi All,
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http://search.java.sun.com/search/java/index.jsp?and=database+jtable&phr=&qt=&not=&field=title&since=&nh=10&col=javaforums&rf=0&Search.x=22&Search.y=13

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# An EXCEPTION_STACK_OVERFLOW exception has been detected in native code outside the VM.
# Program counter=0x77e94aa0
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tx for help.

I had a problem similar to this. I was writing my own table model which would work sometimes and at other times fail similar to what you describe. I ended up printing out the source code to the DefaultTableModel and taking a look at it and then deciding to subclass that class and add my additional functionality as opposed to writing a completely new model and trying to duplicate the DefaultTableModel. My needs were relatively simple and the subclassing fixed the problem. I can change data with no problem in the displayed table. If you're not already subclassing and trying to write your own table model you may want to give this a try. I'd struggled with the problem for several days thinking I'd fixed it and having it come up again. I invested 2 hours doing the subclassing and the problem has never appeared since then. I know I just missed doing something in the table model I was trying to write but my schedule was tight and the subclassing offered a quick fix. Hope this helps!

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import javax.swing.JPanel;
import javax.swing.JScrollPane;
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import java.awt.GridLayout;
import java.util.ArrayList;
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Medication object = medList.get(rowIndex);
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        case 1:
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        default:
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This line will create an ArrayList which will be used to store the output data of the sql query with the type is Medication class
NO! Read what TPD ask again carefully -
Please explain (as explicit as you can) what these two lines do.
Did you notice that TWO in there?
Did you notice that your reply said 'This line' when it should have said 'These TWO lines .'?
You are creating a new ArrayList EVERY TIME thru the loop; you are NOT creating ONE ArrayList and adding things to it.
The problem is how to show the ArrayList in the jtable defined in another class.
And the answer is: use one of the THOUSANDS of examples on the internet.
See the trail 'How to Use Tables' in The Java Tutorials
http://docs.oracle.com/javase/tutorial/uiswing/components/table.html
Read the trail - try the example. You learn by doing and using code that already works.

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refdt----------refbr----refamt----refcat
10-aug-09---10-----34234-----101a
10-aug-009--11----23245-----102a
1-AUG-09----10----455.98----104A
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09-aug-09-11-----550000-------B
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Br10
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10-aug-09---10-----34234-----101a-------11-aug09--10-----454000-------A
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Hi jytohi,
Please lean back for a moment and study your question. Ask yourself, is this a reasonable way to ask a question?
Jopefully you'll reach the answer, "No it isn't, I need to.."
1. Turn these
1)
refdt----------refbr----refamt----refcat
2) brdet
trdt---------brn-----brtot-----------brcatinto CREATE TABLE statements.
2. Turn these
10-aug-09---10-----34234-----101a
10-aug-009--11----23245-----102a
1-AUG-09----10----455.98----104A
19-aug-09-12-----10000-------103B
11-aug09--10-----454000-------A
09-aug-09-12-----550000-------B
30-sep-09--10-----430000------A
09-aug-09-11-----550000-------Binto INSERT INTO statements
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refdet
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refdt----------refbr----refamt----refcat-----trdt---------brn-----brtot-----------brcat
10-aug-09---10-----34234-----101a-------11-aug09--10-----454000-------A
1-AUG-09----10----455.98----104A------30-sep-09--10-----430000------A
Br 11
10-aug-009--11----23245-----102a -------09-aug-09-11-----550000-------B
Br12
19-aug-09-12-----10000-------103B------09-aug-09----12-----550000-------Binto properly formatted expected output, along with a reasonable explanation of why
4. Turn this
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from brdet a,refdet b
where a.refbr (+) = b.brn
union all
select distinct a.refdt,a.refbr,a.refamt,a.refcat,null as trdt,null as brn,null as brtot,null as brcat
from brdet a,refdet b
where a.refbr = b.brn (+)into a properly formatted query
And last, put everything in into curly brackets {noformat}{noformat} to preserve formatting and blank space.
Best regards
Peter

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Create table script with data:
CREATE TABLE SALE
EMPNO NUMBER,
SALE_AMT NUMBER,
SALE_DATE DATE
SET DEFINE OFF;
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(100, 1000, TO_DATE('12/01/2009 10:20:10', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(100, 1000, TO_DATE('11/30/2009 10:21:04', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(100, 1000, TO_DATE('11/29/2009 10:21:05', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(100, 1000, TO_DATE('11/26/2009 10:21:06', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(100, 1000, TO_DATE('11/25/2009 10:21:07', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(200, 5000, TO_DATE('11/27/2009 10:23:06', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(200, 4000, TO_DATE('11/29/2009 10:23:08', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(200, 3000, TO_DATE('11/24/2009 10:23:09', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(200, 2000, TO_DATE('11/30/2009 10:23:10', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(300, 7000, TO_DATE('11/24/2009 10:24:19', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(300, 5000, TO_DATE('11/25/2009 10:24:20', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(300, 3000, TO_DATE('11/27/2009 10:24:21', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(300, 2000, TO_DATE('11/29/2009 10:24:22', 'MM/DD/YYYY HH24:MI:SS'));
Insert into SALE
(EMPNO, SALE_AMT, SALE_DATE)
Values
(300, 1000, TO_DATE('11/30/2009 10:24:22', 'MM/DD/YYYY HH24:MI:SS'));
COMMIT;
Any help will be needful for me
Regards,

select sale_date,sum(sale_amt) total_sale
from
select empno,0 sale_amt,(sale_date + ao.rn) sale_date
from
select empno,sale_amt,sale_date ,(t.nxt_dt - t.sale_date) diff
from
select empno
,sale_amt,trunc(sale_date) sale_date
,trunc(nvl(lead(sale_date) over (partition by 1 order by sale_date),sale_date)) nxt_dt
from sale
) t
where (t.nxt_dt - t.sale_date) >1
) rec,(select rownum rn from user_objects where rownum<=200) ao
where ao.rn <=(rec.diff-1)
union all
select empno,sale_amt,trunc(sale_date) sale_date
from sale
group by sale_date
order by 1;
~~~~Guess this will serve the purpose...
Cheers Arpan

Display data in JTable

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