How to add row in a JTable at runtime.

Hi,
How to add a row in JTable at runtime? I am using my own TableModel object extended from AbstractTableModel.
Thanks in advance.

try this link... i have answered this forum.
http://forum.java.sun.com/thread.jspa?threadID=5242581

Similar Messages

How to add rows using DefaultTableModel?

I'm trying to figure out the ins-and-outs of creating a dynamic table.
I looked for a tutorial, but none of the example programs I found dealt with my particular issue, nor did they explain anything.
For instance, most of the examples looked like this:
        table = new JTable();
        defaultModel = new DefaultTableModel(10,5);
        setModel(defaultModel);But that doesn't work for me -- I'm creating a class that EXTENDS DefaultTableModel, and so if I want to send in parameters, I have a problem.
          public MyTableModel() {
                        super(data, columnNames);
                ...The above code complains that "you can't access data or columnNames until you call super()!"
But I've seen plenty of example code that DOES send in parameters to super(). How do they get away with that? Is it because they are parameters to the constructor, whereas private/public members of the class are somehow different?
I thought a variable is a variable -- why is one allowed but not the other?
Lastly, I'm trying to figure out, practically speaking, how to load a database with X items, and be able to add rows later. Does that mean I need to use a vector for my data instead of Object[][]?
I've seen BOTH AbstractDataModel and DefaultTableModel used with dynamic tables -- is there any difference between them as far as dynamic tables are concerned?
I was under the impression that I needed to "switch" from ADM to DTM if I wanted to be able to add rows to my table at runtime.
Here are some references to previous discussions I found/participated in on this topic:
http://forum.java.sun.com/thread.jspa?threadID=5224966
http://forum.java.sun.com/thread.jspa?threadID=439141&start=0&tstart=0
Thanks in advance for any help,
Matthew

-> I'm creating a class that EXTENDS DefaultTableModel, and so if I want to send in parameters, I have a problem
Well, you would pass in the data and columnNames as parameter when you create your table model.
-> Lastly, I'm trying to figure out, practically speaking, how to load a
-> database with X items, and be able to add rows later. Does that
-> mean I need to use a vector for my data instead of Object[][]?
You just said you extended DefaultTableModel. Well you don't need to do anything it already manages the data for you. You just use the methods provided to update and change the data.
-> I've seen BOTH AbstractDataModel and DefaultTableModel used with dynamic tables
No you haven't. You really don't understand what an AbstractDataModel is do you? Its nothing. You can't use it. It doesn't have any storage for the data, and since there is no data storage you can't access the data or change it. You can't even create an AbstractTableModel. Read your Java text on what an Abstract class it.
The DefaultTableModel extends the AbstractTableModel to provide data storage and ways to get the data and change the data. It notifies the table when any change is made to the data so the table can repaint itself.
-> How to add rows using DefaultTableModel?
Finally, the DTM provides methods that make the model dynamic. Methods for adding and removing rows or adding and removing columns. Read the API for more information.
If you still don't understand how how the methods work then search the forum for examples that use the methods you don't understand. I've posted an example the uses the methods required to add rows or columns.

How to add rows in tableview using javascipt

Hi
I had tableview and button in my page.If i click on the button one new row should be appended to the existing tableview.
so , how to add rows in tableview using javascipt which are editable?
Regards,
Pydi.

Hi,
Javascript is client scripting language, which is mainly used for validations at the client side.
To add new row using a HTMLB tag ucannot use javascript. Instead pass "visibleRowCount" variable to a abap variable and add the variable on every button click.. that wil increase the visible row count.
Also the size of the table view is the size of the itnernal table, so append a blank like to the internal table or insert it at the top.
If you are not using HTMLB tags and using simple HTML tags u can always add a row using java script.
Regards
Imran.

Add rows and sort JTable in the same program

I would like to have a button to add rows to the JTable, but would also like to sort the data within the columns. This program can sort the data prior to clicking the 'add row' button. After I click the button, there is no new row, and I lose the ability to sort the column. Do you have any tips or advice as to what I can do to fix my program? Is it because I have to have the final code for SortFilterModel to work?
Thanks
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableRowColumn extends JFrame
     private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     JTable table;
     DefaultTableModel model;
     JPanel buttonPanel;
     JButton button;
     public TableRowColumn()
          Object[][] data = {
                    {"6", "K"},
                    {"5", "A"},
                    {"1", "Z"}
          String[] columnNames = {
                "Number",
                "Letter"
          model = new DefaultTableModel(data, columnNames);
                //comment out this SortFilterModel line
                final SortFilterModel sorter = new SortFilterModel(model);
                //Change sorter to model
          table = new JTable(sorter);
          table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
          // Add table and a Button panel to the frame
          JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
          buttonPanel = new JPanel();
          getContentPane().add( buttonPanel, BorderLayout.SOUTH );
          button = new JButton( "Add Row" );
          buttonPanel.add( button );
          button.addActionListener( new ActionListener()
               public void actionPerformed(ActionEvent e)
                    model.addRow( createRow() );
                    int row = table.getRowCount() - 1;
                    table.changeSelection(row, row, false, false);
                    table.requestFocusInWindow();
             //Set up double click handler for column headers and sort
             table.getTableHeader().addMouseListener(new MouseAdapter(){
                    public void mouseClicked(MouseEvent event)
                      //check for click
                      if (event.getClickCount() < 2) return;
                   //find column of click and
                   int tableColumn = table.columnAtPoint(event.getPoint());
                   //translate to table model index and sort
                   int modelColumn = table.convertColumnIndexToModel(tableColumn);
                   sorter.sort(modelColumn);
     private Object[] createRow()
          Object[] newRow = new Object[2];
          int row = table.getRowCount() + 1;
          newRow[0] = Integer.toString( row );
          newRow[1] = LETTERS.substring(row-1, row);
          return newRow;
     public static void main(String[] args)
          TableRowColumn frame = new TableRowColumn();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}

I attempted to modify the code in the correct way, but I ran into a problem near the bottom with the model.addRow(rowData); line. It has an error saying it can't find the addRow method. If I take away the model part, it will compile, but it will cause an infinite loop when I push the 'Add Row' button within the program. I didn't expect that to work, and I think it isn't calling the right model.
I am aware that my code organization and design skills are not very good. I am a fan of basic assembly and low-level hardware languages for the most part.
Thanks for your advice so far, it has been helpful.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableRowColumn extends JFrame
     private final static String LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     JTable table;
     public DefaultTableModel model;
     JPanel buttonPanel;
     JButton button;
     public TableRowColumn()
          Object[][] data = {
                    {"9", "C"},
                    {"5", "A"},
                    {"3", "B"}
          String[] columnNames = {
                "Number",
                "Letter"
          model = new DefaultTableModel(data, columnNames);
                //comment out this SortFilterModel line
                final SortFilterModel sorter = new SortFilterModel(model);
                //Change sorter to model
          table = new JTable(sorter);
          table.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
          // Add table and a Button panel to the frame
          JScrollPane scrollPane = new JScrollPane( table );
          getContentPane().add( scrollPane );
          buttonPanel = new JPanel();
          getContentPane().add( buttonPanel, BorderLayout.SOUTH );
          button = new JButton( "Add Row" );
          buttonPanel.add( button );
          button.addActionListener( new ActionListener()
               public void actionPerformed(ActionEvent e)
                    sorter.addRow( createRow() );
                    int row = table.getRowCount() - 1;
                    table.changeSelection(row, row, false, false);
                    table.requestFocusInWindow();
             //Set up double click handler for column headers and sort
             table.getTableHeader().addMouseListener(new MouseAdapter(){
                    public void mouseClicked(MouseEvent event)
                      //check for click
                      if (event.getClickCount() < 2) return;
                   //find column of click and
                   int tableColumn = table.columnAtPoint(event.getPoint());
                   //translate to table model index and sort
                   int modelColumn = table.convertColumnIndexToModel(tableColumn);
                   sorter.sort(modelColumn);
     private Object[] createRow()
          Object[] newRow = new Object[2];
          int row = table.getRowCount() + 1;
          newRow[0] = Integer.toString( row );
          newRow[1] = LETTERS.substring(row-1, row);
          return newRow;
     public static void main(String[] args)
          TableRowColumn frame = new TableRowColumn();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
class SortFilterModel extends AbstractTableModel{
    public SortFilterModel(TableModel m){
        model = m;
        rows = new Row[model.getRowCount()];
        for (int i = 0; i < rows.length; i++) {
            rows[i] = new Row();
            rows.index = i;
public void sort(int c){
sortColumn = c;
Arrays.sort(rows);
fireTableDataChanged();
public Object getValueAt(int r, int c) {
return model.getValueAt(rows[r].index, c);
public boolean isCellEditable(int r, int c){
return model.isCellEditable(rows[r].index, c);
public void setValueAt(Object aValue, int r, int c){
model.setValueAt(aValue, rows[r].index, c);
public int getRowCount() {
return model.getRowCount();
public int getColumnCount(){
return model.getColumnCount();
public String getColumnName(int c) {
return model.getColumnName(c);
public Class getColumnClass(int c){
return model.getColumnClass(c);
private class Row implements Comparable {
public int index;
public int compareTo(Object other) {
Row otherRow = (Row)other;
Object a = model.getValueAt(index, sortColumn);
Object b = model.getValueAt(otherRow.index, sortColumn);
if (a instanceof Comparable) {
return ((Comparable)a).compareTo(b);
else{
return a.toString().compareTo(b.toString());
public void addRow(Object[] rowData) {
Row[] oldRows = new Row[rows.length];
for (int i=0; i<rows.length; i++) {
oldRows[i] = rows[i];
rows = new Row[rows.length +1];
for (int i=0; i < oldRows.length; i++) {
rows[i] = oldRows[i];
rows[oldRows.length] = new Row();
rows[oldRows.length].index = oldRows.length;
addRow (rowData);
//model.addRow(rowData);
fireTableDataChanged();
private TableModel model;
private int sortColumn;
private Row[] rows;

How can i add rows to a JTable at run time ??????

hi there
how can i add a row to a JTable at run time? and display the table after the change? thank you.

For adding or removing the rows from the JTable, you have to use the methods on the table model. I would show you a simple implementation of table model.
public class MyTableModel extends AbstractTableModel {
private ArrayList rowsList = null;
private String [] columns = { "Column 1" , "Column 2", "Column 3"};
public MyTableModel() {
rowsList = new ArrayList();
public int getRowCount() {
return rowsList.size();
public int getColumnCount() {
return columns.length;
public void addRow(MyRow myRow) {
//MyRow is any of your object.
rowsList.add(myRow);
fireTableDataChanged();
public void removeRow(int rowIndex) {
rowsList.remove(rowIndex);
fireTableRowsDeleted(rowIndex, rowIndex);
public Object getValueAt(int row, in col) {
MyRow currentRow = (MyRow)rowsList.get(row);
switch (col) {
case 0:
//return the value of first cell
break;
case 1 :
//return the value of second cell
break;
case 2 :
//return the value of third cell
break;
}Then create the table using the TableModel using the constructor new JTable(TableModel) and then when you want to add/remove a row from the table, call myTableModel.addRow(MyRow) or myTableModel.removeRow(rowIndex)....I hope that this solves your problem.

How to add row in a TableBean?

Hi,
Can anyone help me, how to add a row in a TableBean?
I already used the following syntax.
if(tableBean!=null)
tableBean.setInsertable(true);
tableBean.setAutoInsertion(false);
but everytime I clicked the Add Another Row Button no rows were created in a TableBean but in my view object row was already created...
Thanks,
Jon

Jon,
You also have to write logic in PFR of Controller and create a row in VO. Set the insert row automatically to false on AddRow Button if is true & check.
Thanks
--Anil

How to add rows in the multicolumn listbox

hello all,
the questions are as below:
1. how to add the rows in the multicolumn listbox?
2. the message is RS232 communication message with hex format, how to convert the 2D format to adapt the itemnames property?
does anyboady can provide a simple example? thanks a lot.
Solved!
Go to Solution.

Hello muks,
I would like to come up with the function like below picture:
the multicolumn listbox include 5 columns, the fifth column is hex format. I want to add the row one by one after each cycle, meanwhile there's a button that can clear the contents in the multicolumn listbox.
So the challenge for me is how to concatenate the different format into one array. then how to insert the row one by one.
Thanks in advance.

How to ADD rows to a dynamic internal table??

My question is simple.
I have a dynamic internal table and I need to ADD rows to if.
I read this thread How to modify a dynamic internal table from dynamic work area but they are modifying existing data.
My internal table is EMPTY and I need to ADD new rows, so I can't use LOOP ASSIGNING.
How can I do that?
Any help is welcome!
Thanks!
Bettina

Hi,
try something similar.
FIELD-SYMBOLS: <fs> type any.
FIELD-SYMBOLS: <f1> type any.
ASSIGN INITIAL LINE TO lo_data ASSIGNING <fs>. " or <f_tab> - not sure w/o editor :-)
assigning component 1 of structure <fs> to <f1>.
<f1> = 'aaa'.
I write it from memory so there can be some syntax errors but focus to command APPEND INITIAL LINE ...
Regards,
Karol

How to add rows in table control for data recording BDC?

hello,
pl tell me the way to upload data through BDC in table control of screen .
how to add fields inrecording of table control?
Please give some code in this regard.
I am generous in giving points..pl help!

Hi,
While doing code under recording first you need to do the recording with sample data under a particular transaction like T-code XK01 (Vendor creation).
Take an example of create vendor using T-code XK01:
Go to t-code 'SHDB' under make recording for XK01 with sample data and once if you complete the recording means after vendor creation check the source code bye by pressing the button 'Program', it shows the total coding for recording of what you entered the test data.
Then you will create one program and copy that source code of recording into your program, and now you have to remove the values at perform statement and give the internal table field name.
Like that you can develop your own code along with your validations.
my best suggestion is dont see the example code of recording method because any one for standard t-code should get the code from recording with sample data, so first tryout with your own recording method and you can understand the code step by step.
With these I hope you will get some idea of recoding method.
Let me know for further doubts.
Regards,
Vijay.

Create Tabular Form wizard - how to add rows to Table / View Owner list?

Create Tabular Form wizard asks to choose "Table / View Owner"
How to add additional schemas/users to this "Table / View Owner" dropdown list?

Next step:
I tried to create 2nd application - and it sees and allows to select from schemas I added in previous step.
Then I tried to add 1 more schema - and 2nd application can't see it...
I create 3rd application and select 1st schema (assigned when workspace was created) - and it sees only this one schema
I create 4th application and select another schema (added in previous steps) - and it sees 2 schemas from 4 assigned
what is this?
how to live with it?

How to disable row of a jtable

hi,
i am making an application in which i have jtable what i wants to do is that i am selecting row and inserting the values of this row into another jtable now what i wanst is to disable the already selected row so that i can not be selected again.
Thanks in advance.

You never bother replying to your old postings to thank people tor the suggestions given, so I won't bother making any more suggestions.

How to enter the values in JTable in runtime

how to enter the values in JTable in runtime

Basically you need a vector of vectors or an array of arrays. Example (off the top of my head):
With Arrays
String[] cols = { "colone", "coltwo", "colthree", "colfour", "colfive" };
String[] numbers = { "one", "two", "three", "four", "five" };
String[] letters = { "A", "B", "C", "D", "E" };
String[][] data = { numbers, letters };
//make sure that the table has a scroll pane wrapped around it otherwise the header is not displayed
JScrollPane scroll = new JScrollPane(new JTable(data, cols));
With Vectors
Vector cols = new Vector();
cols.addElement("colone");
cols.addElement("coltwo");
cols.addElement("colthree");
cols.addElement("colfour");
cols.addElement("colfive");
Vector numbers = new Vector();
numbers.addElement("one");
numbers.addElement("two");
numbers.addElement("three");
numbers.addElement("four");
numbers.addElement("five");
Vector letters = new Vector();
numbers.addElement("A");
numbers.addElement("B");
numbers.addElement("C");
numbers.addElement("E");
numbers.addElement("F");
Vector data = new Vector();
data.addElement(numbers);
data.addElement(letters);
//make sure that the table has a scroll pane wrapped around it otherwise the header is not displayed
JScrollPane scroll = new JScrollPane(new JTable(data, cols));The array or vector can be easily populated at runtime.
Regards
Riz

How can I add rows to a JTable based on an Abstract Table Model?

I have done this ...
public class myui extends JPanel {
private AbstractTableModel jTable1Model;
blah blah
        jTable1Model = new AbstractTableModel() {
             String[] column = new String[]{"TID", "Name", "Address"};
             Vector<Vector<Object>> table = new Vector<Vector<Object>>();
             @Override
             public int getRowCount() {
                  return table.size();
             @Override
             public int getColumnCount() {
                  return column.length;
             @Override
             public String getColumnName(int col) {
                  return column[col];
             @Override
             public Object getValueAt(int row, int column) {
                  return table.get(row).get(column);
             @Override
             public void setValueAt(Object value, int row, int column) {
                  table.get(row).set(column, value);
                  fireTableCellUpdated(row, column);
             public void insertRow() {
                  Vector<Object> columns = new Vector<Object>();
                  columns.add(null);columns.add(null);columns.add(null);
                  table.add(columns);
                  fireTableRowsInserted(0, table.size());
blah blah
    public synchronized void ImportVisitorDataToJTable1(Object value, int row, int col) {
        jTable1Model.InsertRow(); <-----///// This line not being recognised as a valid member function call
     jTable1.setValueAt(value, row, col);
}I thought to insert a row I can define a function in the abstracttablemodel class and then instantiate the class and override or create new methods that I can use.
But after instantiating the class and overriding appropriately and adding the insertRow function, when I try to use it in ImportVisitorDataToJTable1 as seen above its not being recognized as a funtion of jTable1Model

1. respect naming conventions. Example: myui --> MyUI, ImportVisitorDataToJTable1 -->importVisitorDataToJTable1
2. convert Anonymous to Member: AbstractTableModel --> MyTableModel
3. row parameter makes no sense here as it depends on current row count:
    public synchronized void importVisitorDataToJTable1(Object value, int col) {
        int row = jTable1Model.getRowCount();4. here is a more adequate "fireTable.."-call for insertRow:
fireTableRowsInserted(table.size() - 1, table.size() - 1);
5. check if you can take advantage using DefaultTableModel as suggested by Maxideon.

How to add row in multiple view object based on common entity object.

Hi ,
I have
Jdeveloper version - 10.1.3.3.0
Oracle Database - 11g R2
I have a situation where i have to show data from one table in three adf tables on jsf page depending on a flag value in a column in table. For this purpose i have done the following steps
a) Created an entity object on the database table .
b) Created three view objects on this entity object and edited the view object's SQL and included the where clause
                   WHERE A.USER_PERSONAL_NO = :P_USER_PERSONAL_NO AND
                       A.AUTH_TYPE = 'LF'
                   The auth_type cloumn decided in which view object the data will be shown
Now, when i query the data from database by executing the query of these view objects the data is shown correctly in all three view objects. Till here there seems every thing ok
Now , i have to provide the logic to add records in the adf tables for this i have provided add button in action facet of all three tables which are binded to methods in managed bean,
when i add a record in a adf table by add button the new row which is created is shown in all three tables . I cant understand why this is happening , please help me to solve this problem.
How can i make it possible so that the record appears only in that adf table in which the record is added.
The method for adding record is
            Row rw = currentAM.getWfRecommAuths().createRow();
            rw.setAttribute("UserPersonalNo",this.getQuery_personal_no().getValue());
            rw.setAttribute("AuthPersonalNo","");
            rw.setAttribute("AuthType","LX");
            currentAM.getWfRecommAuths().last();
            currentAM.getWfRecommAuths().insertRow(rw);
           Please help , thanks in advance.

Hi,
have a look at polymorphic view objects
http://download.oracle.com/docs/cd/E21764_01/web.1111/b31974/bcadvvo.htm#CEGDCCCB
Frank

How to hide rows in a JTable

Once I create a JTable, how can I hide a specific number of rows during runtime?
Thanks,
Surath.
09/23/2001

You program the getValueAt(r, c) method of your table model to return the value you want to appear in that row and column. In your particular example that could mean returning values in row r if r<cutoff and values in row r+n otherwise.

How to add row in a JTable at runtime.

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