Can i set only 1 column in a jtable to resize?

Hi,
I want to set only the columns with "Strings" as content to be resizable inside my jtable. and leave those which are ints, as a fixed size, but I haven't been able to find a way of setting the resizing options for a specific column...
any ideas?

You would need to check the column number and the data type in the column being resized and force it back to a set value if it was not a column with a string in it. Remember the user can swap the columns.
rykk

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Can't set custom column widths in JTable

I'm trying to set custom columns widths. They are set as I wish but then they are reset to default values (all columns have the same size). This is caused by method JFrame.setVisible(true) which invokes JTree.setWidthsFromPreferredWidths(). It can be investigated from following stack trace printed when a column being resized (see below).
How to prevent this auto width sizing?
P.S. can't override JTable.setWidthsFromPreferredWidths(); seems it's private
table = new JTable(model) {
     public void columnMarginChanged(ChangeEvent event) {
          new Exception("stack trace").printStackTrace();
          super.columnMarginChanged(event);
// setting here custom columns widths via table column model ...java.lang.Exception: stack trace
     at mtu.gui.TrackList$1.columnMarginChanged(TrackList.java:30)
     at javax.swing.table.DefaultTableColumnModel.fireColumnMarginChanged(DefaultTableColumnModel.java:615)
     at javax.swing.table.DefaultTableColumnModel.propertyChange(DefaultTableColumnModel.java:679)
     at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:264)
     at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:232)
     at javax.swing.table.TableColumn.firePropertyChange(TableColumn.java:249)
     at javax.swing.table.TableColumn.firePropertyChange(TableColumn.java:255)
     at javax.swing.table.TableColumn.setWidth(TableColumn.java:482)
     at javax.swing.JTable$2.setSizeAt(JTable.java:2242)
     at javax.swing.JTable$5.setSizeAt(JTable.java:2336)
     at javax.swing.JTable.adjustSizes(JTable.java:2372)
     at javax.swing.JTable.adjustSizes(JTable.java:2340)
     at javax.swing.JTable.setWidthsFromPreferredWidths(JTable.java:2250) <======
     at javax.swing.JTable.doLayout(JTable.java:2165)
     at java.awt.Container.validateTree(Container.java:1089)
     at java.awt.Container.validateTree(Container.java:1096)
     at java.awt.Container.validateTree(Container.java:1096)
     at java.awt.Container.validateTree(Container.java:1096)
     at java.awt.Container.validateTree(Container.java:1096)
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     at java.awt.Container.validateTree(Container.java:1096)
     at java.awt.Container.validateTree(Container.java:1096)
     at java.awt.Container.validate(Container.java:1064)
     at java.awt.Window.show(Window.java:455)
     at java.awt.Component.show(Component.java:1134)
     at java.awt.Component.setVisible(Component.java:1089) <=====
     at mtu.gui.Test.test_03(Test.java:56)
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When I create the table I have code like this:TableColumn col = getColumnModel().getColumn(2);
col.setMinWidth(width + 4);
col.setMaxWidth((int)(width * 1.2));Works just fine for me. The setWidthsFromPreferredWidths() method will use these limits as far as I can see.
PC²

How can i set the column width in the jtable?

how can i set the column width in the jtable?
can anybody send me a simple example??

TableColumn column = table.getColumnModel().getColumn( columnIndex );
column.setWidth( desiredColumnWidth);
column.setMinWidth( desiredMinColumnWidth);
column.setMaxWidth( desiredMaxColumnWidth);

How can we set the column size and height dynamically

Hi All,
I have a requirement where i am designing rtf for excel output.Here i have a column where the height of that particular column must get reset dynamically according to the data that's getting populated.
Thankq in advance.

I had the same problem and I finally found that you can't set a form bean.
There is no methods to do this.
The only way is to make it a dynamic form bean, but i haven't investigated it.
Now I use normal beans to move data between pages.
Sorry if it's not what you want. If you have another solution let me know.

Can i stop the columns in a JTable from re-ordering?

Hi,
As we know, JTable by default allows re-ordering of the columns within it.
I mean to say that the columns in a JTable can be interchanged, by drag and drop utility.
I want to refrain my JTable from doing so.
Can someone please suggest me how can i do this?
Thanx in advance :)
Regards,
Archana

Thank you :)
This did solve my problem of columns getting re-ordered in my JTable.
But i am facing one more problem now :(
I sort my JTable by clicking on the JTableHeader.
Clicking on the column header of any one of the columns of the JTable, sorts all entries in either ascending or descending order.
This is not happening.:(
Can someone please help me out?
Thanx in advance :)
Regards,
Archana

How can i set color some rows in jtable

hi all,
i have table with two cols one is id and other name
i have array of id, i want set color for only those rows in an array
i tried with the following code but only one row is seting why it is not setting
the other rows? or this is the worg way what i did?
     model      = new DefaultTableModel(data, header);
        table          = new JTable(model){
             int mostUsedCols[] = 151,80,185,90,88,95,137,152,153,181,178,179,180,107};
             public Class getColumnClass(int column)
                    return getValueAt(0, column).getClass();
               public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
                    Component c = super.prepareRenderer(renderer, row, column);
                           int id = Integer.parseInt(tblLedgerAccounts.getModel().getValueAt(row, 0).toString());
                           for(int j=0; j<mostUsedCols.length;j++){
                                c.setBackground( id == mostUsedCols[j] ? Color.LIGHT_GRAY : Color.WHITE );
                    return c;
               }help me to solve this problem
thanks
daya

hello,
thanks,
i have table 2 cols(say for ex) 1st column is name and other one is
id, and i have some array of id's, i need to set the color for these rows
and remainings rows are defalut color (white).
I doubt that you need the
else
c.setBackground( Color.WHITE );if i did't set like this the entire table get gray.
>
since the color should be set to the default by the
super.prepareRenderer(...) method. In fact this code
would override the default row selection coloring.
But maybe I don't understand your requirement. You
notice my original example always to check to make
sure the row is not selected before changing the
background color.here is the demo, i comment this line what will happen c.setBackground( Color.WHITE );
if not doing right than suggest me.
import java.awt.Color;
import java.awt.Component;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class TableColor extends JFrame {
     public TableColor()
          Vector header = new Vector();
          Vector data   = new Vector();
          header.addElement("ID");//0
          header.addElement("Name"); //1
          header.addElement("village"); //2
          Vector v = new Vector();
          v.addElement(new Integer(1));
          v.addElement("daya");
          v.addElement("DVB");
          data.addElement(v);
          Vector v1 = new Vector();
          v1.addElement(new Integer(2));
          v1.addElement("raju");
          v1.addElement("DVBs");
          data.addElement(v1);
          Vector v2 = new Vector();
          v2.addElement(new Integer(3));
          v2.addElement("James");
          v2.addElement("sdf");
          data.addElement(v2);
          Vector v3 = new Vector();
          v3.addElement(new Integer(4));
          v3.addElement("Naga");
          v3.addElement("DVBsadf");
          data.addElement(v3);
          Vector v4 = new Vector();
          v4.addElement(new Integer(5));
          v4.addElement("xyz");
          v4.addElement("asdf");
          data.addElement(v4);
        DefaultTableModel tblModLedgerAccounts      = new DefaultTableModel(data, header);
        JTable tblLedgerAccounts          = new JTable(tblModLedgerAccounts){
             int mostUsedCols[] = {2,4,5};
             public Class getColumnClass(int column)
                    return getValueAt(0, column).getClass();
               public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
                    Component c = super.prepareRenderer(renderer, row, column);
                           int id = Integer.parseInt(getModel().getValueAt(row, 0).toString());
                           for(int j=0; j<mostUsedCols.length;j++){
                                if(id == mostUsedCols[j]){
                                     c.setBackground(Color.lightGray);
                                     break;
//                                else
//                                     c.setBackground(Color.WHITE);
               return c;
          JScrollPane scrollPaneLedgerAccounts =     new JScrollPane(tblLedgerAccounts);
          tblLedgerAccounts.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
          this.getContentPane().add(scrollPaneLedgerAccounts);
          setVisible(true);
          pack();
          setTitle("Table Color");
          setDefaultCloseOperation(EXIT_ON_CLOSE);
     public static void main(String args[]){
          new TableColor();
}thanks
daya

How can I restrict the column dragging of JTable?

I have a requirement like, if we have any editable cell in the JTable, we should not allow the user to drag the columns at all. I tried with setDragEnabled(false) ..but its not giving the proper out put..... can any one come up with a solution for this?

table.getTableHeader().setReorderingAllowed(false)

How to set the column width of JTable

I want do remember the column width and write it to a file, when the window is started , the column width is read from the file and the table is set as that. I also want the column width is not fixed and can be changed by mouse.But I am always failded.
How to do? would you please help me!
Thanks a lots.

To "remember" the column widths, add a mouse listener to the table header. Upon mouseReleased(), get the column widths and save them to your file. When the application starts next time, get the stored widths and set them using:
table.getColumn("XXX").setPreferredWidth(...);
By default, your columns are adjustable, but you can use:
table.getTableHeader().setResizingAllowed(true);

How can i set a column which would show me the name of the user

how can i write a trigger which would show me the name of the user now make changes in the table.

872959 wrote:
how can i write a trigger which would show me the name of the user now make changes in the table.I think what sb is trying to say is: if you mean the database user, you can use the USER session variable to identify the database user:
http://download.oracle.com/docs/cd/E11882_01/server.112/e17118/functions227.htm#SQLRF06156
you would write a before each row trigger to update an "updated_by" column on your table to be USER.
e.g.:
:new.updated_by := USER;

How can I set column headers in JTable?

I only want to set 3 column headers in JTable (without TabelModel). Can you help me?

Hello dn77,
Here's is a little sample I just rigged up, hope it helps.
import java.awt.*;
import javax.swing.*;
public class TestOne{
     public static void main(String arg[]) {
          Object rows[][] = {
               {"One", "1", "I"},
               {"Two", "2", "II"},
               {"Three", "3", "III"},
               {"Four", "4", "IV"},
               {"Five", "5", "V"},
               {"Six", "6", "VI"},
               {"Seven", "7", "VII"},
               {"Eight", "8", "VIII"},
               {"Nine", "9", "IX"},
               {"Ten", "10", "X"},
               {"Eleven", "11", "XI"},
               {"Twelve", "12", "XII"},
               {"Thirteen", "13", "XIII"},
               {"Fourteen", "14", "XIV"},
               {"Fifteen", "15", "XV"},
               {"Sixteen", "16", "XVI"},
               {"Seventeen", "17", "XVII"},
               {"Eighteen", "18", "XVIII"},
               {"Nineteen", "19", "XIX"},
               {"Twenty", "20", "XX"}
          String headers[] = {"Notation", "Decimal", "Roman"};
          JFrame frame = new JFrame("3 Column header");
          JTable table = new JTable(rows, headers);
          JScrollPane scrollPane = new JScrollPane(table);
          frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
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          frame.setVisible(true);
}-Merwyn,
Developer Technical Support,
http://www.sun.com/developers/support.

Can't set a new size to the JTable =(( HELP!!

Hey everyone, gosh im so tired of this :( ..im still trying but i cant do what i wanted.
Here's the issue:
The problem of Editable is solved , just set to table.Enabled(false); done :)
Now how can i set a Size to that JTable , cuz is not working like : table.setSize (...,...) thats not working and i dont know why =(
Another question how do i fix the columns i mean, its possible to drag and switch the columns and i dont want that.
public VPQueryResult(Vector data, Vector colnames) {
        this.colnames = colnames;
        this.data = data;
    public void showTable(){
        table_model = new DefaultTableModel(this.data, this.colnames);
        table = new JTable(table_model);
        table.setRowSelectionAllowed(true);
        table.setCellSelectionEnabled(false);   // -------->   NOT WORKING!!! =(
        frame = new JFrame ("Title");
        frame.getContentPane().add(new JScrollPane(table));
        showFrame();
    public void showFrame(){
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocation(300,200);
        frame.setResizable(false);
        frame.pack();
        frame.setVisible(true);
    } thks in advance!
Edited by: Java__Estudante on 4/Dez/2008 0:22
Edited by: Java__Estudante on 4/Dez/2008 0:27

Im just using what u are seeing on this code:
public VPQueryResult(Vector data, Vector colnames) {
        this.colnames = colnames;
        this.data = data;
    public void showTable(){
        table_model = new DefaultTableModel(this.data, this.colnames);
        table = new JTable(table_model);
        table.setRowSelectionAllowed(true);
        table.setCellSelectionEnabled(false);
        frame = new JFrame ("Title");
        pane = new JScrollPane(table);
        frame.getContentPane().add(pane);
        showFrame();
    public void showFrame(){
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocation(300,200);
        frame.setResizable(false);
        frame.pack();
        frame.setVisible(true);
    }Thats why im askin' if i need to add anything else to the code, i dont work with swing for a long time, so it might be something that i forgot to do, dont know
Any idea , change the code if u want so i change the frame size.
what would u do? i dont have panels or layouts just a JTable and a JFrame

Editable(false) on a column in a JTable. how to?

how can I set a column named Total, in a JTable to not be editable?
thanks
ameal from sv�rje

Hai Ameel,
check the following thread,
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=704416
Hope this helps,
Regards,
Ciya.

Is there any way to set default column widths in the Finder's Column view

When my Finder windows open in column view, all the columns are always VERY wide. I have to then spend time resizing them to a managable width. Is there any way to set default column widths in the Finder's Column view?
<Re-Titled By Host>

No, because you can't set a columns view default.
27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

OLE2 how to set a column width of an excel file i'm creating?

how can i set the column width in an excel file i'm creating with ole?
or even, haw can i set the auto-fix properties?

Hallo !
SORRY MY ENGLISH is very BAD.
I tried to set page header and footer in Excel sheet with abap ole
DATA : BEGIN OF enter,
         x(1) TYPE x VALUE '0D',
        END OF enter.
DATA : format(255) TYPE c.
FORM set_page_sheet.
CALL METHOD OF excel 'ActiveSheet' = sheet.
CALL METHOD OF sheet 'PageSetup' = pagesetup.
SET PROPERTY OF pagesetup 'Orientation' = xllandscape.
SET PROPERTY OF pagesetup 'PrintTitleRows' = '$9:$12'.
CLEAR format.
ERROR
CONCATENATE 'PAGESHEET' enter-x 'PAGE &P/&N' INTO format.
ERROR
SET PROPERTY OF pagesetup 'RightHeader' = format.
CLEAR format.
CONCATENATE ' Text 1 ' enter-x 'Text 2'
enter-x 'Text 3 ' INTO format.
SET PROPERTY OF pagesetup 'RightFooter' = format.
FREE OBJECT pagesetup.
ENDFORM.                    " set_page_sheet
Activate report -
ERROR - The enter-x must by data type c or another then data type x
Thanks for answer.

How To Set Excel Column Format Latebinding

private void WriteToExcel(ref System.Data.DataTable dtExcel)
//Microsoft.Office.Interop.Excel.Application oXL = null;
//Microsoft.Office.Interop.Excel._Workbook oWB;s
//Microsoft.Office.Interop.Excel._Worksheet oSheet;
//SaveFileDialog SFD = new SaveFileDialog();
//SFD.Filter = "Excel 97-2003 Workbook(*.xls)|*.xls|Excel Workbook(*.xlsx)|*.xlsx|Excel Binary Workbook(*.xlsb)|*.xlsb|" +
//"Excel Macro-Enabled Workbook(*.xlsm)|*.xlsm";
//SFD.ShowDialog();
/*Cell Format Text,
Format Excel cells to store values as text
Formating Excel cells to text format will solve the problem of losing leading zeo values when you export data from other data sources to excel.
Excel.Range formatRange;
formatRange = xlWorkSheet.get_Range("a1", "b1");
formatRange.NumberFormat = "@";
xlWorkSheet.Cells[1, 1] = "098";
if (dgvData.RowCount == 0)
MessageBox.Show("GridView is Empty.");
return;
tlsStatus.Text = "Export To Excel Strats.... ";
tlsStatus.ForeColor = System.Drawing.Color.DeepPink;
prbExcelGen.Value = 0;
prbExcelGen.Minimum = 0;
prbExcelGen.Maximum = dgvData.RowCount;
prbExcelGen.Step = 1;
prbExcelGen.Refresh();
object objApp_Late;
object objBook_Late;
object objBooks_Late;
object objSheets_Late;
object objSheet_Late;
object objRange_Late;
object[] Parameters;
string[] headers = new string[dgvData .ColumnCount];
string[] columns = new string[dgvData.ColumnCount];
int i = 0;
int c = 0;
for (c = 0; c <= dgvData.ColumnCount - 1; c++)
headers[c] = dgvData.Rows[0].Cells[c].OwningColumn.Name.ToString();
//Convert Cell Names To A,B,C...Z , 65+C=CHR(C)=>A WHEN C=0
i = c + 65;
columns[c] = Convert.ToString((char)i);
try
// Get the class type and instantiate Excel.
Type objClassType;
objClassType = Type.GetTypeFromProgID("Excel.Application");
objApp_Late = Activator.CreateInstance(objClassType);
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objBooks_Late = objApp_Late.GetType().InvokeMember("Workbooks",BindingFlags.GetProperty, null, objApp_Late, null);
//Add a new workbook.
objBook_Late = objBooks_Late.GetType().InvokeMember("Add",BindingFlags.InvokeMethod, null, objBooks_Late, null);
//Get the worksheets collection.
objSheets_Late = objBook_Late.GetType().InvokeMember("Worksheets",BindingFlags.GetProperty, null, objBook_Late, null);
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Parameters = new Object[1];
Parameters[0] = 1;
objSheet_Late = objSheets_Late.GetType().InvokeMember("Item",
BindingFlags.GetProperty, null, objSheets_Late, Parameters);
//if (true)
// Create the headers in the first row of the sheet
for (c = 0; c <= dgvData.ColumnCount - 1; c++)
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Parameters = new Object[2];
Parameters[0] = columns[c] + "1";
Parameters[1] = Missing.Value;
objRange_Late = objSheet_Late.GetType().InvokeMember("Range",
BindingFlags.GetProperty, null, objSheet_Late, Parameters);
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Parameters = new Object[1];
Parameters[0] = headers[c];
objRange_Late.GetType().InvokeMember("Value", BindingFlags.SetProperty,
null, objRange_Late, Parameters);
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for (i = 0; i < dgvData.RowCount - 1; i++)
prbExcelGen.PerformStep();
prbExcelGen.Refresh();
for (c = 0; c <= dgvData.ColumnCount - 1; c++)
//Get a range object that contains cell.
Parameters = new Object[2];
Parameters[0] = columns[c] + Convert.ToString(i + 2);
Parameters[1] = Missing.Value;
objRange_Late = objSheet_Late.GetType().InvokeMember("Range",
BindingFlags.GetProperty, null, objSheet_Late, Parameters);
//Write Headers in cell.
Parameters = new Object[1];
Parameters[0] = dgvData.Rows[i].Cells[headers[c]].Value.ToString();
objRange_Late.GetType().InvokeMember("Value", BindingFlags.SetProperty,
null, objRange_Late, Parameters);
//if (i == 0)
// BoldRow(i, c, (EXL._Worksheet)objSheet_Late);
tlsStatus.Text = "Exporting Records...." + i;
//Return control of Excel to the user.
Parameters = new Object[1];
Parameters[0] = true;
tlsStatus.Text = "Exporting Completed.";
objApp_Late.GetType().InvokeMember("Visible", BindingFlags.SetProperty,
null, objApp_Late, Parameters);
objApp_Late.GetType().InvokeMember("UserControl", BindingFlags.SetProperty,
null, objApp_Late, Parameters);
* oWB.SaveAs(fileName, Excel.XlFileFormat.xlOpenXMLWorkbook,
missing, missing, missing, missing,
Excel.XlSaveAsAccessMode.xlNoChange,
missing, missing, missing, missing, missing);
//oWB = (Microsoft.Office.Interop.Excel._Workbook)objBook_Late;
//oWB.SaveAs("file", EXL.XlFileFormat.xlXMLSpreadsheet, Type.Missing, Type.Missing, Type.Missing, Type.Missing, EXL.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
//oWB.Save();
catch (Exception theException)
String errorMessage;
errorMessage = "Error: ";
errorMessage = String.Concat(errorMessage, theException.Message);
errorMessage = String.Concat(errorMessage, " Line: ");
errorMessage = String.Concat(errorMessage, theException.Source);
MessageBox.Show(errorMessage);
finally
using the above code i am writing to excel sheet can some one help me to tell how can i set a column type as text

Thanks Forum,
i got the answer here
https://social.msdn.microsoft.com/Forums/windows/en-US/36340ada-e13b-41cb-a31d-fb76121aa0d2/c-exporting-text-file-to-excel-and-column-formatting-problem?forum=csharpgeneral

Can i set only 1 column in a jtable to resize?

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