Moving a data row between JTables

Hi,
I have two JTables with identical column setup and I'm trying to move/copy one or more rows from one to the other via drag and drop. I've tried several things that i've found in the various dnd examples i've come across, but none seem to work, so I'm hoping that somebody here can help out. I'm using jdk 1.4.0 and am aware that drag and drop operates differently under this version.
Thankyou in advance,
T.F.

I've actually looked at that, but I've not been able to figure out how exactly to use it in this case. Is there an example that is related to what I'm trying to do?
Thanks,
T.F.

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Can some please explain the difference between master, documents, document lines, master data row?
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Hi Juan,
Are you referring to the settings for a user-defined table? If so, these settings are for use with UDOs (User-defined objects). UDOs cannot currently be manipulated by the DI API so setting a user-defined table to anything other than 'No Object' will restrict how you can access this data.
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Calculation date deference between two rows in same column and in same table

mytable
accountno
tdate
1001
01/01/2014
1002
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1003
01/01/2014
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In SQL 2012/2014:
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FROM   tbl
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In SQL 2005/2008:
; WITH CTE AS (
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FROM   tbl
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Erland Sommarskog, SQL Server MVP, [email protected]

Moving a ResultSet into a JTable, cheaply and efficiently.

Hi,
This may be something interesting for the more advanced Java programmers.
I've recently run into an issue, with moving a ResultSet into a JTable. Now, this may seem simple, and believe me it is, but, all the ways I have seen it done, and tried, just don't suite my need.
DBSql dbsql = new DBSql(); // My database handler class
tableResults.setModel(new javax.swing.table.DefaultTableModel(dbsql.execute(script), dbsql.getColumns()));
* Queries the DataBase and populates
* the values into a two-dimensional object array
* @param SqlQry
* @return Object[][]
public Object[][] execute(String SqlQry) throws SQLException {
Object[][] obj = null;
select = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet rs = select.executeQuery(SqlQry);
rsmd = rs.getMetaData();
try {
if (rs.next()) {
boolean found = true;
rs.last();
recordCount = rs.getRow();
rs.first();
obj = new Object[recordCount][rsmd.getColumnCount()];
int i = 0;
while (found) {
for (int j = 0; j < rsmd.getColumnCount(); j++) {
obj[i][j] = rsmd.getColumnType(j + 1) != Constants.TYPE_INTEGER ? rs.getString(j + 1) : rs.getInt(j + 1);
i++;
found = rs.next();
} else {
recordCount = 0;
return null;
} catch(OutOfMemoryError oome) {
System.gc();
throw new SQLException("Out Of Memory");
if(rs != null) rs.close();
return obj;
The application I have created is used to connect to any database I want. I have tested it with JavaDB, Microsoft Access, and DB2. The problem is, most DB2's have tables with many records and columns, while most new Relational Databases, have small tables with few records. This code works fantastic with a couple thousand records, with very few columns. But, doesn't cut it when it comes to 50000 records or more. For, instance I queried a DB2 table that has 34000 records and 117 columns ("select * from table"), it doesn't take too long, but it uses way too much memory. If I run that query the application resources 298mb, then when I run it again, it uses a little more and throws an OutOfMemoryError.
The second issue I have is, I queried another table that has 147000 records and selected 4 columns. No OutOfMemoryError this time - 70mb resourcing - but, the application did take at least 20 minutes to collect those records.
I have tried using the Vector<Vector<String>> type into the JTable, but, frankly that's just asking for an OutOfMemoryError.
I have tried creating my own custom table model, with a created data object.
I have tried inserting rows into a table model in the method itself and returning the table model.
Eg.
while (found) {
Object[] obj = new Object[rsmd.getColumnCount()];
for (int j = 0; j < rsmd.getColumnCount(); j++) {
obj[j] = rsmd.getColumnType(j + 1) != Constants.TYPE_INTEGER ? rs.getString(j + 1) : rs.getInt(j + 1);
tablemodel.insertRow(obj);
found = rs.next();
^I think you can use a vector for this too.
So far, nothing has solved my problem.
One thing I have not tried however, is a different table component for this kind of thing.
I'm basically looking for, a method of doing this, with less overhead and quicker table population.
Any Ideas?
Regards,
That_Gui

Thanks for the reply.
"1) Swing related questions should be posted in the Swing forum."
Apologies, I was caught between swing and essentials, as it seemed to me as, more of a "better ways to do things" kind of question.
"Also, the approach you are using requires two copies of the data, one in the ResultSet and one in the TableModel."
I understand that transferring a ResultSet into an Object Array may probably be resource intensive, my delphi colleague made mention of that to me, not too long ago. That is why I'm trying to transfer the ResultSet directly into the table. That is why I used the ListTableModel, which also uses a lot of memory, I have looked at that - I had forgotten to mention that.
"I have seen approaches where you try to only read a specific number of records. Then as you scroll additional records are read as needed. I can't point you to any specific solution though."
Using an approach of reading the data as you scroll, sounds great, but also sounds like unnecessary work for the program to do, just like this Object/Vector story. In RPG, if you are working with subfiles (like a JTable), you will display 10 records at a time, and if the user hits the Page Down button you will display the next 10, that is how I'm understanding it.
"I rarely use DefaultTableModel, creating your own model from AbstractTableModel is a lot more flexible when it comes to how you organise your storage, and it's pretty simple once you get the hang of it."
This is the dream, I just need to design one that works as I need it.
"You'd do a select count(*) on your query first to get the total rows expected. Of course one of the problems is that the databased table may change after you've retrieved the length or the items."
Unfortunately, this is not an option for me, it wont work for what I need.
I'm going to give the ResultSetTableModel a go - which I think it is actually similar to the ListTableModel - and I will get back to you.

Problem retrieving data from a JTable.

Hi All,
I've just searched to 45th page of this forum but I heven't found a topic containing infos that can help me.
Well, my problem is: I have to retrieve data from a JTable. I use getValue() method but it seems to work well on all cells of a row but the last cell. I use the TAB to move focus on the row and when it is on the last cell, using TAB, the focus jumps on the next row & 1st column.
Using TAB moving on system, I can retrieve all data but data on the last cell data.
I add another info hoping someone has a solution for my problem: If the focus goes back on the last cell of a row just edited, in this case the data retrieving work as well.
Thank you for your attention!
Bye.

I don't understand your question. I don't understand what using Tab and getValueAt(...) have to do with one another. If you want data from a cell then just use getValueAt(...).
If you want to know what cell currently has focus you use
getSelectedRow()
getSelectedColumn()

Deleting a row from JTable

I am trying to delete a row from a JTable whenever the button on the last column is pressed. I know to do this, I can use the removeRow(int) method of the tableModel. But the odd thing is when I try to get a handle to the TableModel from the JTable to use that function, i.e. table.getModel().removeRow(int) it doesn't work. But if I explicitly pass in the tableModel into my class it does work. Here's the code below:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.UIManager;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableCellEditor;
import javax.swing.AbstractCellEditor;
import javax.swing.table.DefaultTableModel;
public class tester4 extends JFrame
     protected final int BUTTON_COL = 2;
     private TableCellRenderer defaultRenderer;
     private TableCellEditor defaultEditor;
     private JTable workingTable;
     private String[] transactionCols = {"Qty", "Product", "Cancel"};
     private Object[][] data = {{5, "prod1", "Cancel"},
               {6, "prod2", "Cancel"},
               {7, "prod3", "Cancel"}};
    public tester4()
          workingTable = new JTable(tableModel);
          workingTable.setName("Working Table");
          defaultRenderer = workingTable.getDefaultRenderer(JButton.class);
          defaultEditor = workingTable.getDefaultEditor(Object.class);
          StatusTableRenderer testRenderer = new StatusTableRenderer(defaultRenderer, defaultEditor, workingTable, tableModel);
          workingTable.setDefaultRenderer(Object.class, testRenderer);
          workingTable.setDefaultEditor(Object.class, testRenderer);
        JScrollPane scrollPane = new JScrollPane( workingTable );
        getContentPane().add( scrollPane );
     private DefaultTableModel tableModel = new DefaultTableModel(data, transactionCols){
          // Only allow button column to be editable, if there is an actual
          // button in that row
          public boolean isCellEditable(int row, int col){
               return (col == BUTTON_COL && data[row][col] != "") ? true : false;
          // Overriden getColumnClass method that will return the object
          // class type of the first instance of the data type otherwise
          // returns the Object.class
          public Class getColumnClass(int column){
            for (int row = 0; row < getRowCount(); row++){
                Object o = getValueAt(row, column);
                if (o != null){ return o.getClass(); }
            return Object.class;
    public static void main(String[] args)
        tester4 frame = new tester4();
        frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
        frame.pack();
        frame.setVisible(true);
    public class StatusTableRenderer extends AbstractCellEditor
                                            implements TableCellRenderer,
                                                           TableCellEditor,
                                                           ActionListener{
         private TableCellRenderer defaultRenderer;
         private TableCellEditor defaultEditor;
         private JButton cancelButton;
         private JButton editButton;
         private String text;
         private int buttonColumn;
         private int selectedRow;
         private JTable table;
         private DefaultTableModel tableModel;
         public StatusTableRenderer(TableCellRenderer renderer,
                                       TableCellEditor editor,
                                       JTable table,
                                       DefaultTableModel tableModel){
              defaultRenderer = renderer;
              defaultEditor = editor;
              this.table = table;
              this.tableModel = tableModel;
              buttonColumn = table.getColumnCount() - 1;
            cancelButton = new JButton();
            editButton = new JButton();
            editButton.setFocusPainted(true);
            editButton.addActionListener(this);
         public StatusTableRenderer(TableCellRenderer renderer,
                                            TableCellEditor editor,
                                            JTable table,
                                            DefaultTableModel tableModel,
                                            int _buttonColumn){
              this(renderer, editor, table, tableModel);
              buttonColumn = _buttonColumn;
         public Component getTableCellRendererComponent(JTable table, Object value,
                   boolean isSelected, boolean hasFocus, int row, int column) {
              if (column == buttonColumn){
                   if (hasFocus){
                        cancelButton.setForeground(table.getForeground());
                        cancelButton.setBackground(UIManager.getColor("Button.background"));
                   else if (isSelected){
                        cancelButton.setForeground(table.getSelectionForeground());
                        cancelButton.setBackground(table.getSelectionBackground());
                   else{
                        cancelButton.setForeground(table.getForeground());
                        cancelButton.setBackground(UIManager.getColor("Button.background"));
                   cancelButton.setText( (value == null) ? "" : value.toString() );
                   return cancelButton;
            return defaultRenderer.getTableCellRendererComponent(
                        table, value, isSelected, hasFocus, row, column);
         public Component getTableCellEditorComponent(JTable table, Object value,
                   boolean isSelected, int row, int column){
              if (column == buttonColumn){
                   text = ((value == null) ? "": value.toString());
                   editButton.setText(text);
                   selectedRow = row;
                   return editButton;
              return defaultEditor.getTableCellEditorComponent(
                        table, value, isSelected, row, column);
        public Object getCellEditorValue()
            return text;
        public void actionPerformed(ActionEvent e)
            fireEditingStopped();
            // This works
            tableModel.removeRow(selectedRow);
           // This does not work
          // table.getModel().removeRow(selectedRow);
}Take a look at the actionPerfformed method. One way of doing it works, one doesn't. Just trying to understand why me getting a handle to the tableModel through the table doesn't work.
Message was edited by:
deadseasquirrels

It gives me a run-time error Well then your question should be "why do I get this run-time error" and then you would quote the error. Be more descriptive. "It doesn't work" is not descriptive.
table.getModel().removeRow(selectedRow);I don't use JDK1.5 either. But if you are saying that the above line compiles cleanly with JDK1.5 (because of the auto-boxing feature, or whatever its called), then I see no reason why the code wouldn't work since it recognizes the class as a DefaultTableModel.
Presumably you commented out the other line so you don't try to delete the row twice. Otherwise you might be getting a indexing error.

How to retrieve Data in a JTable, When you click on the specified line?

I Have a JTable. When I click on a line, I want to retrieve the value of the last column of the selected line.
I do that:
int selectedRow = lsm.getMinSelectionIndex();
int selecRow = lsm.getMaxSelectionIndex();
String res="";
if (selectedRow == selecRow)
System.out.println("number of colomns="+nbCol);
indiceDoc=(String)(data[selectedRow][1]);
res = " Row "+selectedRow + " selected"+"Indice =:"+indiceDoc;
else res = " Rows "+selectedRow + " to "+selecRow + " selected";
When the table is not sorted, it's ok, but when I sort one or more colomns, it don't return the correct value. It returns the value of an other line.
"Data" is my original table, but I think that it don't change when sorting.There is the Problem I thinK.
I think its because the index of the lines is reinitialize after each sorting.
Do you have an Idea?

The problem seems to be the sorter. You will have to ask the sorter for the sorted row number.
I have modified my TableSorter with a new method:
public int getJTableRowToModelRow(int index) {
return indexes[index];
So in my class which holds the tablemodel, table & sorter if I want to get hold of an row I write:
int selectedRow = table.getSelectedRow();
int sorterRow = sorter.getJTableRowToModelRow(selectedRow);
Object data = tableModel.getData(sorterRow);
tableModel.getData(int row) is an added method to the tablemodel. It only, in your case, returns data[row][1];
I hope this wasn't to messy for you... ;-)
//David

Inserting row in JTable (runtime)

i need to inserting row in JTable in runtime so tell me what it do

dear farhanaj ,
try this code:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.table.*;
/* <applet code=tableadd.class width=200 height=200>
</applet>
public class tableadd extends JApplet implements ActionListener
Object[] data = new Object[5];
DefaultTableModel defaulttablemodel = new DefaultTableModel();
JTable jtable=new JTable(defaulttablemodel);
JPanel jpanel= new JPanel();
private     JPanel          topPanel,jpPanel;
public     JTable          table;
JButton jbutton1 = new JButton("create new row");
JButton jbutton2 = new JButton("create new col");
//JButton jbutton1=new Jbutton("r"),jbutton2=new Jbutton("c");
public tableadd()
for(int column=0 ; column<5 ; column++)
defaulttablemodel.addColumn("column" + column);
for(int row=0 ; row<5;row++)
for(int column=0 ;column<5;column++)
data[column]="cell" row "," + column;
defaulttablemodel.addRow(data);
//getContentPane().add(new JScrollPane(jtable) ,BorderLayout.CENTER);
//getContentPane().add(new JPanel() ,BorderLayout.SOUTH);
int v=ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
int h=ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED;
JScrollPane jsp = new JScrollPane(jtable , v, h);
getContentPane().add(jsp, BorderLayout.CENTER);
topPanel = new JPanel();
jpPanel=new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add(topPanel,BorderLayout.NORTH);
getContentPane().add(jpPanel,BorderLayout.SOUTH);
jpPanel.add(jbutton1);
jpPanel.add(jbutton2);
jbutton1.addActionListener(this);
jbutton2.addActionListener(this);
public void actionPerformed(ActionEvent e)
if (e.getSource() == jbutton1)
int numberrows = defaulttablemodel.getRowCount();
int numbercolumns=defaulttablemodel.getColumnCount();
Object[] data = new Object[numbercolumns];
for(int column=0 ; column<numbercolumns;column++)
data[column]="cell" numberrows "," +column;
defaulttablemodel.addRow(data);
else
if (e.getSource() ==jbutton2)
int numberrows=defaulttablemodel.getRowCount();
int numbercolumns=defaulttablemodel.getColumnCount();
defaulttablemodel.addColumn("column" + numbercolumns);
for(int row=0; row<numberrows ; row++)
defaulttablemodel.setValueAt("cell" row "," +numbercolumns ,row , numbercolumns);
               System.out.println(row);
//jtable.sizeColumnsToFit(0);

How to remove a row from JTable

Hi!
I'm used to remove rows from JTables getting the model and doing a removeRow(num) like this:
((DefaultTableModel)jTable1.getModel()).removeRow(0);
But with ADF and JDeveloper the model says it's a JUTableBinding.JUTableModel but its not accessible.
How to remove a row in Jdeveloper 10.1.3.4.0?

Or maybe is just better to refresh data in the jTable but I do not know either like doing it.

How to get each row between ranges

Hi,
How can i get the each row between range.
e.g
I have date range, 01012005 to 01012007.
I want to get all month and year in internal table between this range.
helpfull answers will be rewarded.
Thanks,
Message was edited by:
        Sal Khan

data : begin of itab occurs 0,
         month(2),
         year(4),
        end of itab.
data : lv_start type sy-datum,
         lv_end type sy-datum.
lv_start = '20050101'.
lv_end = '20070101'.
while lv_start le lv_end.
itab-month = lv_start+4(2).
itab-year = lv_start+0(4).
append itab.
lv_start4(2) = lv_start4(2) + 1.
endwhile.

Should cancelled mailbox moves result in any moved mail data removed from target server?

I was moving mailboxes from 1 DB to another. 3 out of 120 were left running for 12 hours; they were the biggest ones and it was very slow to process the items. There were also reports of slowness on the server so I had no choice but to cancel the moves.
My question is should cancelled mailbox moves result in any moved mail data being removed from the target database? It doesn't appear that my disk as increased in space again so I'm wondering if it's there as whitespace maybe? There is an event logged to say
the mailbox has been deleted from the target.
Would appreciate if someone can clear this up and possibly explain exactly what occurs during this type of scenario.
Thanks.

Hi,
Thank you for your kindly remind.
In Exchange 2000, 2003 and 2007 mailboxes become unavailable during movement, when a mailbox move takes place, the mailbox isn't actually moved, it's just copied to the destination location. Once that copy has finished, AD is updated to point to the new location
and the old mailbox is deleted from the source EDB file.
The most different between Exchange 2010 and legacy version in move mailbox is that allows end-users to be online in their email accounts. On completing the move users just needs to reopen their Outlook clients.
Mailbox Move Requests are a new feature set of Exchange 2010 and requires running a series of Cmdlets to perform asynchronous online mailbox moves with the help of a service agent called Mailbox Replication Service (MRS). MRS is available on all Exchange 2010
Client Access Servers.
Best Regards,
Allen Wang

Delete row in JTable

Hello I am new To JAVA SWING
I have 2 questions related to JTable
1) How do i remove selected row in JTable ...for instance, I click on the row to delete (It is selected) , later I press the delete button, and then row is removed .... any hints ?
2) If I would like to save the rows in a JTable into a database , .... How can iterate through the rows in the JTable..each row .... the rows are saved in a List object...and a List Object is what I pass as a parameter in a class method in order to be saved into Database.
Thanks,
deibys

1) use the removeRow(...) method of the DefaultTableModel
20 use table.getModel().getValueAt(...) to get the data from the model and create your list Object.

Share Data Source between multiple report projects in Microsoft SQL Server 2012 Reporting Services

I have a reports solution in 2012 which contains multiple report projects one each for target deployment folder and we use TFS 2012 for report deployment.
We have a template project which has a bunch of template reports and all the datasources used in different reports.
When I develop a report, I cannot "Preview" in TFS but, for deploy this used to work fine util the reports solution was in TFS 2010 & Visual Studio 2008 R2. Since we moved to TFS 2012 & SSRS 2012 not being able to deploy till I create all
the necessary datasources for each project and now all the developers complaining that they cannot develop reports in TFS itself as they cannot preview (this problem was existing previously) and now not being able to deploy as it errors for each report "Could
not find specified rds file". I tried messing around with the .rptproj file DataSources tag that did not help either by modifying it like below.
<DataSources>
<ProjectItem>
<Name>DB.rds</Name>
<FullPath>Template\Data Source\DB.rds</FullPath>
</ProjectItem>
</DataSources>
Is there a way I could share a Data Source between multiple projects in Microsoft SQL Server 2012 Reporting Services?
Thanks in advance.............
Ione

Hi ione721,
According to your description, you want to create a shared data source which works for multiple projects. Right?
In Reporting Services, A shared data source is a set of data source connection properties that can be referenced by multiple reports, models, and data-driven subscriptions that run on a Reporting Services report server. It must be within one project.
We can't specify one data source working for multple projects. In this scenario, we suggest you put those reports into one project. Otherwise you can only create one data source for each project.
If you have any question, please feel free to ask.
Best Regards,
Simon Hou

Query regarding updating rows in JTable

Query regarding updating rows in JTable
Hello,
I have a JTable with 6 columns and 1000s of rows (which are data read from flat files)
I can select 1 or more rows and change the values of the
columns. each time I do this I need to update the values
in the flat file.
Currently I assign the updated Jtable values to a vector
Vector rowVector = (Vector)defaultModel.getDataVector();
then I iterate over the vector and compare the values with the (old) data
in the JTable.
            for(int rowCount = 0; rowCount<rowVector.size(); rowCount++){
                Vector v = (Vector)rowVector.elementAt(rowCount);
                    //smsList is the Vector that contains the old JTable values
                    for(int i=0; i<smsList.size(); i++){
                            //If colums values have been changed; add that
                            //vector value to another vector
                            selectedsmsList.add(smsList.get(i));
            for(int i=0; i<selectedsmsList.size(); i++){
                     //Update the values in the flat file
            }This works fine except that it takes ages to iterate over the updated vecor and un-updated,old vector; is there any way to directly get the list of rows that were updated in the jtable; so that I can directly do an I/O operation to update the jtablke values?

Just a suggestion.
You could add a listener and use a vector of booleans to keep track of the rows that have been changed. You could then iterate through this boolean vector and update the changed rows.
See
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#modelchange
Don't know whether this will be helpful.
Regards, Darryl

ROWS BETWEEN 12 PRECEDING AND CURRENT ROW

I have a report with the last 12 months and for each month, I have to show the sales sum of the last 12 months. For example, for 01/2001, I have to show the sales sum from 01/2000 to 12/2000.
I have tried this:
SUM(sales)
OVER (PARTITION BY product, channel
ORDER BY month ASC
ROWS BETWEEN 12 PRECEDING AND CURRENT ROW)
The problem is: this calculation only considers the data that are in the report.
For example, if my report shows the data from jan/2001 to dec/2001, then for the first month the calculation result only returns the result of jan/2001, for feb/2001, the result is feb/2001 + jan/2001.
How can I include the data of the last year in my calculation???

Hi,
I couldn't solve my problem using Discoverer Plus functions yet...
I used this function to return the amount sold last year:
SUM("Amount Sold SUM 1") OVER(PARTITION BY Products.Prod Name ORDER BY TO_DATE(Times."Calendar Year",'YYYY') RANGE BETWEEN INTERVAL '1' YEAR PRECEDING AND INTERVAL '1' YEAR PRECEDING )
The result was: it worked perfectly well when I had no condition; so it showed three months (1998, 1999, 2000) and two data points (Amount Sold, Amount Sold Last Year). The "Amount Sold Last Year" was null for 1998, as there aren't data for 1997.
Then I created a condition to filter the year (Times."Calendar Year" = 1999), because I must show only one year in my report. Then I got the "Amount Sold" with the correct result and the "Amount Sold Last Year" with null values. As I do have data for 1998, the result didn't return the result I expected.
Am I doing something wrong??

Moving a data row between JTables

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