JCheckBox clicking problem in JTable

Hi,
I have a column of JCheckBox in a JTable. The JTable is only used to layout the controls(for lagecy reason). The JCheckBox has an item change listener attached. The problem is that OCCASIONALLY when the JCheckBox[i] was clicked, the debug in itemStateChanged show the source object was NOT JChechBox, it was JCheckBox[i+1] or JCheckBox[i-1]. In other word, it was the check box in the previous or next row changed state.
Has anybody experienced similar problems? Is it a problem of JTable dispatching mouse click event?
How to solve the problem?
Thanks

I'm not sure why you get the results you do, but instead of adding a change listener to the JCheckBox you could add a TableModelListener to the TableModel. This will fire an event whenever any data is changed. This thread shows a simple example:
http://forum.java.sun.com/thread.jsp?forum=57&thread=425540

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Colum Resizing problem in JTable

HI All,
I am facing a problem with JTable while resizing the colum. when user clicks and drags to resize a column, the column width increases continuously till the mouse button is released. I am sure this sounds like a vague description,
(eg)
when I click on a column boundary and drag, the column width is getting increase beyond where the cursor of the mouse is. In a normal table, when I click and drag, the column resizes to the size that I have the mouse position at, and gets set to the width when I release the mouse. But right now, when I click the mouse and drag to say a width of 50 from 10, it is still increasing beyond 50 and stops when I release the mouse at about 100 or higher. I hope this is a clearer explanation.
In Java 1.2, it works fine. but in java 1.4...
If Anyone knows, please let me know
Advance thanks for any comments and suggestion..
Best Regards,
Muthu

I solved this problem... Problem is getPreferredSize() method. I override this method
Thank u for ur suggestion..
Best Regards,
Muthu

Problem of JTable's column setPreferredWidth.

Hi All,
I have a problem about JTable,I want to set the preferredwidth for every column when the table is first established,but it is always failed.
Could someone tell me the root?Thanks!
import java.awt.*;
import javax.swing.*;
public class MixerTest2 extends JFrame {
public MixerTest2() {
super("Customer Editor Test");
setSize(600,160);
setDefaultCloseOperation(EXIT_ON_CLOSE);
JTable typeTable=new JTable();
typeTable=new JTable(new String [][] {
{"312fs", "33232", "32", "32"},
{"3212fsdfa12", "3322", "32", "32"},
{"3212fa12", "321212", "321212", "321212"},
{"3212gsds12", "321212", "321212", "321212"}
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
typeTable.setAutoResizeMode(JTable.AUTO_RESIZE_NEXT_COLUMN);
typeTable.getColumnModel().getColumn(0).setPreferredWidth(10);
typeTable.getColumnModel().getColumn(1).setPreferredWidth(30);
JScrollPane typeTableScrollPane=new JScrollPane(typeTable);
getContentPane().add(typeTableScrollPane);
public static void main(String args[]) {
MixerTest2 mt = new MixerTest2();
mt.setVisible(true);
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Don't forget to use the Code Formatting Tags so the posted code retains its original formatting. That is done by selecting the code and then clicking on the "Code" button above the question input area.
The problem is that the size of the frame is greater than the size of the table so the widths of all the columns get adjusted after you specify the original default size.
Your code should be something like:
typeTable.setPreferredScrollableViewportSize(typeTable.getPreferredSize());
JScrollPane typeTableScrollPane=new JScrollPane(typeTable);
mt.pack();
mt.setVisible(true);Or you might be able to use my [Table Column Adjuster|http://www.camick.com/java/blog.html?name=table-column-adjuster] which will resize the columns automatically.

Hi!!! A Problem in JTable

HI,
I have a problem in JTable.I have a Jtable and a button named validate.My JTable first displays a set of rows and colums.if we name the colns as a,b and c. when i click the validate button i will take the values of a1 and b1 and do some validations. If it is in correct position then the row remains as it is else i will change the value of b1 to a1 position and vice versa. This happens in a loop till the end and the data vector of the table gets changed accordingly.Now the problem is suppose if there are 10 rows and the value changes in row 1,5,7 thn i need that rows alone to be colored while the button ends its action.Finally the JTable should be viewed as row 1,5,7 colored and others in their default color....
Please help me...
Message was edited by:
tis-is-hari

You will have to create your own Renderer or use a table like JXTable from swing labs that allows highlighting.

Problem with JTable in a JScrollPane

Hello all,
I have a problem using JTable, that the number of columns is very big,
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table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF );

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Hello,
i have a selection problem with JTable. I want to allow only single cell selection and additionally limit the selection to the first column.
I preffered the style from MS Outlook Express where you can select the email accounts to edit.
It is a table like this:
Account name |   Type |   ...
--------------|---------|---------------------
Hotmail       |   POP3 |
GMX           |   IMAP |The selection should be only avaibable at 'Hotmail' or 'GMX' - not at 'POP3', 'IMAP' or as complete row selection.
Please help me!
Thanks.
Warlock

Maybe this will helpimport java.awt.*;
import javax.swing.*;
public class Test3 extends JFrame {
public Test3() {
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public static void main(String[] arghs) { new Test3(); }
class MyTableSelectionModel extends DefaultListSelectionModel {
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Double click on a JTable row.

I got and run a sample about double click on a JTable and it works fine. This sample defines a TableModel as shown at the end this note.
On the other hand, I have an application in which I have defined a JTable
using the DefaultTableModel as follows :
DefaultTableModel dtm = new DefaultTableModel(data, names);
JTable table = new JTable(dtm); where data and names are String arrays.
Of course the mouse listener stuffs have been also specified.
table.addMouseListener(new MouseAdapter(){
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I changed it with the DefaultTableModel class. At this point, the Double click does not work anymore.
So I gues it should be an option which prevents double click to work.
I thought of using mousePress() instead of mouseClick(), but it's very dangerous (I tried). . If by error the user clicks twice (instead of only once) the mousePress method is invoked twice for the same entry
My question is now simple, may I use double click on a JTable with the default table model. If so, what I have to do ?
Thanks a lot
Gege
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     public void setValueAt(Object aValue, int row, int column) {
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
public class ClickIt extends MouseAdapter
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        JTable table = (JTable)e.getSource();
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}

Problem in JTable cell renderer

Hi
One problem in JTable cell. Actually I am using two tables while I am writing renderer for word raping in first table .. but it is affected in last column only remain is not being effected�. Please chaek it out what is exact I am missing�
Thanks
package com.apsiva.tryrowmerge;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.EventObject;
import java.util.Hashtable;
import java.net.*;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.event.*;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
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     String[] columns1 = new String[2];
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          data = getRowData();
          columns = getColData();
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          try{
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             }catch(Exception e){}
          columns1 = getColumns1();
         itemTableModel1 = new ItemTableModel(data1,columns1);
         ///////////// Set Data In Both Table Model //////////////////////////////////
          itemTable = new ApsJTable(itemTableModel);
          imageTable = new ApsJTable(itemTableModel1);
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          this.imageTable.setShowGrid(false);
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          this.imageTable.setColumnSelectionAllowed(false);
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          itemTable.getColumnModel().getColumn(0).setPreferredWidth(200);
          itemTable.getColumnModel().getColumn(1).setPreferredWidth(600);
          tableScrollPane.getRowHeader().setPreferredSize(new Dimension(800, 0));
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          itemTable.getTableHeader().setReorderingAllowed(false);
          itemTable.setColumnSelectionAllowed(false);
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          itemTable.setCellSelectionEnabled(false);
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          //     editor = new TextAreaCellEditor();
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////////////---------------------- Here background color is being set--------------//////////////////
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     ArrayList rowData=new ArrayList();
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     item.put(new Long(0),new String("Item No:aaaaaaa aaaaaaaa aaaaaaaaa aaaaaa"));
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     String[] colData = new String[]{"Attribute","Value"};
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          setWrapStyleWord(true);
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          setSize(width, 1000);
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          this.setBackground(Color.WHITE);
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I think Problem is between these code only
for(int k=0;k<columnCount;k++)
               TableCellRenderer renderer = null;
               TableCellEditor editor = null;
               renderer = new TextAreaCellRenderer();
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          setWrapStyleWord(true);
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          Object value, boolean isSelected, boolean hasFocus,
          int nRow, int nCol)
          if (value instanceof String)
               setText((String)value);
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          int width = table.getColumnModel().getColumn(nCol).getWidth();
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          int rowHeight = getPreferredSize().height;
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}

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Beginner - mouse over IE line - and click problem

My test swf - -
http://www.jennyweir.com/testSite/
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Hi Gavlong
Did you try adding the background color parameter in the HTML
of your page? This is different than the background in the Flash
file. I looked at the source for your page and I didn't see it.
Regarding your double-click problem it may be due to an
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bits about how for some interactive web apps (Flash is included in
the list of affected programs) the user needs to 'activate' the
control by pressing SPACEBAR or ENTER. That would explain the need
for the second click. Apparently there's a way to enable the
control from your web page by using and external .js file but I
haven't implemented it. Here are a couple of related
links...hopefully they are of some help:
http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/overview/activati ng_activex.asp
http://msdn.microsoft.com/ieupdate/
http://www.adobe.com/devnet/activecontent/articles/devletter.html
-WD

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