Trying to add a new row to a JTable

I'm having trouble adding a row dynamically to a JTable. I've been able to populate the table with an array and that works well, but how do you add new rows after the program is running?

You need to make TableModel that does dynamic resizing od the underlying data 2d array. This one will resize for both rows and columns.
    private Vector dataNames= new Vector();
    private Vector dataData =new Vector();
        javax.swing.table.TableModel dataModel = new javax.swing.table.AbstractTableModel()
            public int getColumnCount()
                return dataNames.size();
            public int getRowCount()
                return dataData.size();
            public Object getValueAt(int row, int col)
                try
                    java.util.Vector v=(java.util.Vector)dataData.elementAt(row);
                    return v.elementAt(col);
                catch(Exception e)
                    System.out.println("e :"+e.getMessage());
                    return null;
            public String getColumnName(int column)
                return (String)dataNames.elementAt(column);
            public Class getColumnClass(int col)
                if(getValueAt(0,col)!=null)
                    return getValueAt(0,col).getClass();
                else
                    if(col==0)
                        return Integer.class;
                    else if(col==1 || col==2)
                        return Double.class;
                    else
                        return String.class;
            public boolean isCellEditable(int row, int col)
                if(col > 0 && col <4)
                    return mapTableEditable;
                else
                    return false;
            public void setValueAt(Object aValue, int row, int column)
                if(row>=dataData.size())
                    if(dataData.size()==0)
                        for(int i=0;i<row+1;i++)
                            dataData.addElement(new java.util.Vector());
                            java.util.Vector v2=(java.util.Vector)dataData.lastElement();
                            v2.setSize(getColumnCount());
                    else
                        java.util.Vector v1=(java.util.Vector)dataData.lastElement();
                        int dataSize=row-dataData.size()+1;
                        for(int i=0;i<dataSize;i++)
                            dataData.addElement(new java.util.Vector());
                            java.util.Vector v2=(java.util.Vector)dataData.lastElement();
                            v2.setSize(v1.size());
                java.util.Vector v=(java.util.Vector)dataData.elementAt(0);
                if(column>=v.size())
                    for(int i=0;i<dataData.size();i++)
                        v=(java.util.Vector)dataData.elementAt(i);
                        v.setSize(column+1);
                if(row<dataData.size())
                    v=(java.util.Vector)dataData.elementAt(row);
                    v.setElementAt(aValue,column);
        };

Similar Messages

How can I add a new row in a JTable dynamically?

Dear Sir(s)
I want to add a new row in a Jtable as I press enter key the time focus is on the last cell of the row? pls help

TomDooley wrote:
Hello,
...I write directly to a cvs file ...my loop slows down to 0.2 Hz
Writing a series of 5 values to a file should not take so long. There is probably something wrong in the way you are saving your data. May be you should post a simplified version of your vi, so we could see how to improve your code.
CC
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...

Dynamically adding a new row to a JTable

Have anybody tried to add a new row to JTable? In the JTable if the user is editing the last row, another row should be created and displayed dynamically, without loosing the contents in the other rows and without any flickering effect. Is this possible in java applications or applets?
-Madhuri.

again, do all yoru work in the table model. make a class that implements the table model interface. if you mail me I can send you a table model I made(I have about 8) and you will see what to do from that. Its all about the table Model, not the table.
Try using ArrayList instead of Vector unless you need it to be thread safe.

Trying to automatically add a new row w/o mutating table error...

I'm using Oracle 10g express. I'm trying to automatically add a new row with the same e_ID, (RDD + 6 months) as the updated row when RC is updated. I'm fairly new to Oracle, so I need some help on creating a trigger. If you need more details let me know. Thanks in advance.
create table E
e_id number(6,0) not null,
constraint e_pk primary key(e_id)
create Table ER
e_Id Number(6,0) Not Null,
SC Date,
RDD Date,
RC Date,
Constraint ER_Fk Foreign Key(E_Id) References E(E_Id)
);

mookjais wrote:
I'm using Oracle 10g express. I'm trying to automatically add a new row with the same e_ID, (RDD + 6 months) as the updated row when RC is updated. I'm fairly new to Oracle, so I need some help on creating a trigger. If you need more details let me know. Thanks in advance.
create table E
e_id number(6,0) not null,
constraint e_pk primary key(e_id)
create Table ER
e_Id Number(6,0) Not Null,
SC Date,
RDD Date,
RC Date,
Constraint ER_Fk Foreign Key(E_Id) References E(E_Id)
);Do you mean following(example)?
create trigger after_insert_e
after
insert
on e /*This is table name*/
referencing new as new old as old
for each row
begin
insert into ER(e_Id,SC,rdd,rc)
values(:new.ed_id,sysdate,sysdate,sysdate);
end;

Need to add a new row at the end of the table

Experts,
working jdev 11.1.1.3.0
i am adding row programetically, my requirement need to add the row at after last row.
i tried different ways.
Row newLastRow = getPWBBidLaneVO().last();
int lastRowIndex = getPWBBidLaneVO().getRangeIndexOf(newLastRow);
getPWBBidLaneVO().insertRowAtRangeIndex(lastRowIndex - 1,
laneRow);
this is giving --- java.lang.ArrayIndexOutOfBoundsException: 0
and
http://kohlivikram.blogspot.com/2008/10/add-new-row-in-adf-table-on-button.html --- its giving index out of bound because vo.getRangeSize() is 25. We set this value at vo for performance improment suggestions.
is there a way to add a new row at the end of the table?

Add this to the view row impl class
       public void insertRow(Row row) {
           //go to the end of Rowset if it has rows
           Row lastRow = this.last();
           if (lastRow !=null){
                //insert new row at the end and make it current
               int indx = this.getRangeIndexOf(lastRow)+1;
               this.insertRowAtRangeIndex(indx,row);
               this.setCurrentRow(row);
           }else { // empty Rowset
           super.insertRow(row);
           }

I am trying to add a new credit card and it keeps telling me that I have to enter a valid security code...I have tried 2 different cards and it is doing the same thing. How do I get past this?

I guess it has been a year since I last purchased something on I-tunes and my account is saying that they couldn't authorize my card for some of my purchases. I am trying to add a new credit card to clear this up and it keeps saying that I have to enter a valid security code. I have tried 2 different cards and I get the same thing. I have also added an I-tunes gift card and that isn't clearing up the money that I owe. It is showing that I have a $25 credit for that. How do I fix this, I have been trying for days and all I have got from the e-mail tech support is that its my credit card issuer that is causing the problem. Thats not correct because one of the credit cards that I am trying to use, is a prepaid Visa gift card. I know that these work on I-tunes because I have used them before in the past. I am getting very frustrated with this whole process, I just want to clear up my account and buy some new music!! HELP!!

You probably ran into blocks & locks.
iTunes Store Support
http://www.apple.com/emea/support/itunes/contact.html
They'll sort it out.

How do I add a new row to an AbstractTableModel?

I'm having an issue with adding new data to a table row. Every row I add contains the same data which is always the last data I grabbed from my database. I'm not sure if my issue has to do with how I set up the data to be passed or the table itself or both... Any help would be appreciated. It seems like the tablemodel is holding the memory spot ArrayList I'm passing. If I have to set up an arraylist of arraylists, to pass how do I do that?
My output is always:
1,4,Laser,10,120,100
1,4,Laser,10,120,100
1,4,Laser,10,120,100
1,4,Laser,10,120,100
Desired output:
1,1,Beam,10,99,100
1,2,Canon,10,120,100
1,3,Missile,10,66,100
1,4,Laser,10,120,100
     * Extract weaponIDs by hullType from weapon database
private void setWeapons(int hullType){
// equpModel is the tableModel
    equipModel.clearTable();
    Weapon tempWeapon = new Weapon();
    ArrayList newData = new ArrayList();
    for (Iterator <Weapon> i = dataBaseManager.weaponList.iterator(); i.hasNext(); ){
        tempWeapon = i.next();
        if (tempWeapon.weaponClass == hullType){
            newData.add(0,1);
            newData.add(1,tempWeapon.weaponID);
            newData.add(2,tempWeapon.weaponName);
            newData.add(3,tempWeapon.weaponCps);
            newData.add(4,tempWeapon.weaponMass);
            newData.add(5,tempWeapon.weaponCost);
            equipModel.insertRow(newData);
}Here is a snipet from the table class
public class GenTableModel extends AbstractTableModel {
private ArrayList data; // Holds the table data
private String[] columnNames; // Holds the column names.
   * Constructor: Initializes the table structure, including number of columns
   * and column headings. Also initializes table data with default values.
   * @param columnscolumns[] array of column titles.
   * @param defaultvdefaultv array of default value objects, for each column.
   * @param rowsrows number of rows initially.
public GenTableModel(String[] columns, Object[] defaultv, int rows) {
    // Initialize number of columns and column headings
    columnNames = new String[ columns.length ];
    for(int i = 0; i < columns.length; i++) {
      columnNames [ i ] = new String(columns [ i ]);
    // Instantiate Data ArrayList, and fill it up with default values
    data = new ArrayList();
    for(int i = 0; i < rows; i++) {
      ArrayList cols = new ArrayList();
      for(int j = 0; j < columns.length; j++) {
        cols.add(defaultv [ j ]);
      data.add(cols);
   * Adds a new row to the table.
   * @param newrowArrayList new row data
public void insertRow(ArrayList newrow) {
    data.add(newrow);
    super.fireTableDataChanged();
   * Clears the table data.
public void clearTable() {
    data = new ArrayList();
    super.fireTableDataChanged();
}

Hi thanks again for responding
Here is the Initialization, including the panel and scrollpane it sits on.
      // Table attempt
        JPanel tablePanel = new JPanel(new BorderLayout());
        tablePanel.setBounds(PANEL_X+2*PANEL_DISTANCE, PANEL_Y, PANEL_WIDTH+300, PANEL_HEIGHT);
        title = BorderFactory.createTitledBorder(blackLine, "Table List");
        tablePanel.setBorder(title);
// This is column tile plus one dummy initilization set.
        String[] columnNames = {"DB", "ID", "Name", "CPS", "Energy", "Mass", "Cost"};
        Object[] data = {new Integer(0),new Integer(0), "Empty", new Integer(0),
                    new Integer(0),new Integer(0),new Integer(0)};
// here is the GenTableModel creation
        equipModel = new GenTableModel(columnNames, data, 1);
        equipmentTable = new JTable(equipModel);
        equipmentTable.setRowSelectionAllowed(true);
        equipmentTable.setFillsViewportHeight(true);
        equipmentTable.setColumnSelectionAllowed(false);
        TableColumn column = null;
        column = equipmentTable.getColumnModel().getColumn(0);
        column.setPreferredWidth(20);
        column = equipmentTable.getColumnModel().getColumn(1);
        column.setPreferredWidth(20);
        JScrollPane scrollPane = new JScrollPane(equipmentTable);
        tablePanel.add(scrollPane);
        add(tablePanel);
    Here is the full code for GenTableModel. It is as you guessed.
public class GenTableModel extends AbstractTableModel {
private ArrayList data; // Holds the table data
private String[] columnNames; // Holds the column names.
public GenTableModel(String[] columns, Object[] defaultv, int rows) {
    // Initialize number of columns and column headings
    columnNames = new String[ columns.length ];
    for(int i = 0; i < columns.length; i++) {
      columnNames [ i ] = new String(columns [ i ]);
    // Instantiate Data ArrayList, and fill it up with default values
    data = new ArrayList();
    for(int i = 0; i < rows; i++) {
      ArrayList cols = new ArrayList();
      for(int j = 0; j < columns.length; j++) {
        cols.add(defaultv [ j ]);
      data.add(cols);
public int getColumnCount() {
    return columnNames.length;
public int getRowCount() {
    return data.size();
public String getColumnName(int col) {
    return columnNames [ col ];
public Object getValueAt(int row, int col) {
    ArrayList colArrayList = (ArrayList) data.get(row);
    return colArrayList.get(col);
public Class getColumnClass(int col) {
    // If value at given cell is null, return default class-String
    return getValueAt(0, col) == null ? String.class
                                      : getValueAt(0, col).getClass();
public void setValueAt(Object obj, int row, int col) {
    ArrayList colArrayList = (ArrayList) data.get(row);
    colArrayList.set(col, obj);
public void insertRow(ArrayList newrow) {
    data.add(newrow);
    super.fireTableDataChanged();
public void deleteRow(int row) {
    data.remove(row);
    super.fireTableDataChanged();
public void deleteAfterSelectedRow(int row) {
    int size = this.getRowCount();
    int n = size - (row + 1);
    for(int i = 1; i <= n; i++) {
      data.remove(row + 1);
    super.fireTableDataChanged();
public ArrayList getRow(int row) {
    return (ArrayList) data.get(row);
public void updateRow(ArrayList updatedRow, int row) {
    data.set(row, updatedRow);
    super.fireTableDataChanged();
public void clearTable() {
    data = new ArrayList();
    super.fireTableDataChanged();
}

Add a new row at the top of a table in GUI

Hi,
I am using JDev 11.1.1.1.0. I need to be able to let users add a new row at the top of a table and not anywhere else in the middle of table rows. I cannot seem to find a way to do it. note that it does not matter where a new row gets inserted in the db, i am only concerned about restricting the insert in the GUI to the topmost line/row.
Thanks,
AJ

Hi
Can you try with writing your custom create method in application module and calling same from UI on command button action like
public void createNewRow()
ViewObjectImpl vo = getVO1();
Row newRow= vo.createRow()
vo.insertRowAtRangeIndex(0, newRow);
Vikram

Error while trying to add a new field in search criteria by VO extension

Hi,
I am trying to add a new field by using the VO extension to a seeded OAF page used to search Repository contracts.
I get the following error on opening the page after I have compiled my code on server and bounced apache.
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I extended the AM also after this to include the extended VO but still the error comes.
This page is a dynamic search page where the results change based on the different search criteria.
Cheers
Swati

Hi,
I extended the AM also after this to include the extended VO but still the error comes.There is no need to extend the AM for extending a VO. Hopefully the VO which u extending already attached to the AM oracle.apps.okc.repository.search.server.ContractsAdvSearchAM.
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every entry in an ldap directory must have some mandatory attributes, e.g. "objectClass". which objectclass your entry should belong to? add the objectClass-attribute to your entry!
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2 yrs worth of music on my ipod nano 5th gen just vanished while I was trying to add four new tracks.

Most of the music I've put on my ipod nano 5th gen in the last 2 years just vanished while I was trying to add four new tracks. Stuff from before that seems to be still there (I add stuff manually, not sync, and the ipod wasn't full). It was a bit glitchy as soon as I plugged it in to update - threw up a few error messages, decided to verify my ipod a couple of times, After that, once or twice itunes seemed to lose the ipod completely, although as far as the laptop was concerned it was definitely still connected, so i went for the 'safe to remove hardware' option and reconnected...
I'm guessing somewhere in the midst of whatever was going on there, something got confused or corrupted, but I have no way to tell what... Ipod seems to think it is using less of its capacity now, but I don't know whether to believe it or not!
Can I get this stuff back? It's not just stuff I bought from itunes, either - things I put on from cds have gone too. I have all the music either backed up or on cds, but I'm not in the same country as my cds right now - also rebuilding all of my playlists and trying to remember what went where is going to be a pain! Is there a quicker way than just doing it all over again?

Downloading past purchases from the App Store, iBookstore, and iTunes Storehttp://support.apple.com/kb/HT2519
Message was edited by: michael08081

My iphone 6 plus after updating to IOS 8.2 the touch id doesn't work neither in home unlock nor in app store and when i'm trying to add a new fingerprint it says ''failed unable to complete touch id setup.Please go back and try again'' .

my iphone 6 plus after updating to IOS 8.2 seems to have a problem with the touch id witch doesn't work neither in home unlock nor in app store and when i'm trying to add a new fingerprint it says ''failed unable to complete touch id setup.Please go back and try again'' . I have multiple fingerprints and none of them appear to work.

Hi Giannis,
If you are having an issue with Touch ID not functioning as expected, I would suggest that you troubleshoot using the steps in this article -
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Start with the section titled Clean the Touch ID sensor and then Get help with Touch ID.
Thanks for using Apple Support Communities.
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thanks in advance

Hello,
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Did you check if the row is inserted in the database (and just didn't show up for one reason or another)?
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http://roelhartman.blogspot.com/
http://www.bloggingaboutoracle.org/
http://www.logica.com/

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Trying to add a new row to a JTable

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