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Make a JCheckBox in a JTable editable

I need some help with my JTable. I am writing a program, wich extracts data from a database into a JTable. The first column should be a editable JCheckBox so I am able to work with the checked (true or false) rows and the data.
I am using a AbstractTableModel(with class extends AbstractTableModel) and override these five methods:
#Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return columnIndex == 0;
}
#Override
public Class<?> getColumnClass(int col) {
if (col == 0) {
return Boolean.class;
}
return super.getColumnClass(col);
}
#Override
public int getColumnCount() {
return header.length;
}
#Override
public int getRowCount() {
return data.length;
}
#Override
public Object getValueAt(int row, int col) {
return data[row][col];
}
To display the JTable I use:
JTable table = new JTable();
JScrollPane scrollpane = new JScrollPane();
.
.
.
table = new JTable(data, header);
table.setModel(this);
scrollpane = new JScrollPane(table);
I read the data with a for loop into the data array. The header array I defined.
Basically I need the checked rows to send a mail with the right data in it.
EDIT:
package test;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
public class TestCode extends AbstractTableModel {
private static final long serialVersionUID = -7051817393770003705L;
String[] header = {"", "header", "header", "header"};
Object[][] data = {{new Boolean(false), "Text", "Text", "Text"}, {new Boolean(false), "Text", "Text", "Text"}, {new Boolean(false), "Text", "Text", "Text"}};
public TestCode() {
JFrame frame = new JFrame();
JTable table = new JTable(data, header);
table.setModel(this);
JScrollPane scrollpane = new JScrollPane(table);
frame.add(scrollpane);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
}
#Override
public boolean isCellEditable(int row, int col) {
return col == 0;
}
#Override
public Class<?> getColumnClass(int col) {
if (col == 0) {
return Boolean.class;
}
return super.getColumnClass(col);
}
#Override
public int getColumnCount() {
return header.length;
}
#Override
public int getRowCount() {
return data.length;
}
#Override
public Object getValueAt(int row, int col) {
return data[row][col];
}
public static void main(String[] args) {
TestCode code = new TestCode();
}
}
This is a short snippet of my code to execute to make it easier for you. I want be able to check the JCheckBoxes at the firt column so I am able to read a true or false boolen from that column.
Thank you for help!

You have to override AbstractTableModel#setValueAt
#Override
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
// super.setValueAt(aValue, rowIndex, columnIndex); by default empty implementation is not necesary if direct parent is AbstractTableModel
data[rowIndex][columnIndex] = aValue;
fireTableCellUpdated(rowIndex, columnIndex);// notify listeners
}
Result.
BTW : Don't use new Boolean(false) instead use Boolean.FALSE

Okay leaving aside the structure of the code (I agree that the creation of the table should not be done in the model and things should be separated out better) the reason this is not working is that your table model does not implement setValueAt(Object value, int row, int column).
So when you click on a cell, that method is called, but your data array is not updated so the value for the cell is always false.
Adding
#Override
public void setValueAt(Object value, int row, int col) {
data[row][col] = value;
}
to your model means the table behaves as you would expect

Simply add implementation of value setter
#Override
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
data[rowIndex][columnIndex] = aValue;
}

How do I make a JTable editable in java

I'm using a JTable in java, but it won't let me edit the cells.
private final TableModel dataModel = new AbstractTableModel() {
public int getColumnCount() {
return 5;
}
public int getRowCount() {
return 10;
}
public Object getValueAt(int row, int col) {
return new Integer(row*col);
}
};
private final JTable table = new JTable(dataModel);

add the follwoing code
public boolean isCellEditable(int row, int col)
{ return true; }
public void setValueAt(Object value, int row, int col) {
rowData[row][col] = value;
fireTableCellUpdated(row, col);
}
you should have a array where you will save the changes

Add isCellEditable() function inside the anonymous inner class AbstractTableModel
public boolean isCellEditable(int row, int col) {
return true;
}

Try
private final TableModel dataModel = new AbstractTableModel() {
public int getColumnCount() {
return 5;
}
public int getRowCount() {
return 10;
}
public Object getValueAt(int row, int col) {
return new Integer(row*col);
}
public boolean isCellEditable(int row, int col) {
return true;
}
};

Add isCellEditable() to the rows and columns you want them to be editable, example if you don't want some columns like ID to be editable return false. Keep in mind that you need to save the editit data some where
public boolean isCellEditable(int row, int col) {
return true; // or false for none editable columns
}
public void setValueAt(Object value, int row, int col) {
rowData[row][col] = value; // save edits some where
fireTableCellUpdated(row, col); // informe any object about changes
}

How to bind booleans in JTable with JGoodies

I have seven boolean values in a column of a JTable that I want to bind to my bean.
How do I bind them?
All the JTable binding examples out there focus on binding the table selection, but I only care about what the values of those booleans are.

You need to implement your own data model. I give you simplified example that shows idea of usage. Take a look at getColumnClass method.
Usage: table.setModel(new DataModel(myData));
class DataModel extends AbstractTableModel
{
public DataModel(Object yourData){
//some code here
}
#Override
public int getRowCount() {
return yourData.rows;
}
#Override
public int getColumnCount() {
return yourData.colums;
}
#Override
public Class<?> getColumnClass(int col) {
if (col == myBooleanColumn) {
return Boolean.class;
} else {
return null;
}
}
#Override
public boolean isCellEditable(int row, int col)
{
return col >= 0;
}
#Override
public Object getValueAt(int rowIndex, int columnIndex) {
return yourData.get(rowIndex,columnIndex);
}
#Override
public void setValueAt(Object aValue, int row, int col) {
yourData.set(aValue,row,col)
this.fireTableCellUpdated(row, col);
}
}
Hope this helps.

Java JTable create row of checkboxes to create subtable

I have a JTable that uses an AbstractTableModel. I'm trying to make the first row of the table a row of JCheckboxes.
EDIT: The goal is to take the columns with checked checkboxes and create a new table. This is my first time trying something like this, so I'm open to suggestions.
Here is the code I'm trying in NetBeans 7.1.1 :
private void selectSourceCBActionPerformed(java.awt.event.ActionEvent evt) {
int sourceNum = selectSourceCB.getSelectedIndex();
DataSource currentDS = datSourceArrList.get(sourceNum);
final ArrayList<Object[]> workArrLst1 = currentDS.getSampSet();
sourceDetailTable.setAutoResizeMode(sourceDetailTable.AUTO_RESIZE_OFF);
sourceDetailTable.setColumnSelectionAllowed(true);
JTableHeader header = sourceDetailTable.getTableHeader();
AbstractTableModel mytable1 = new AbstractTableModel() {
Object colNames[] = workArrLst1.get(0);
#Override
public int getRowCount() {
return workArrLst1.size();
}
#Override
public int getColumnCount() {
return workArrLst1.get(1).length;
}
#Override
public Object getValueAt(int rowIndex, int columnIndex) {
return workArrLst1.get(rowIndex+1)[columnIndex];
}
#Override
public void setValueAt(Object value, int row, int col) {
if(row == 1){
workArrLst1.get(row)[col] = Boolean(false);
fireTableCellUpdated(row, col);
}
workArrLst1.get(row)[col] = (String) value;
fireTableCellUpdated(row, col);
}
#Override
public String getColumnName(int column) {
return (String) colNames[column];
}
};
}
Is there anything obvious I'm missing here?

get cells odf a JTable

how to display a row of a jtable in a from of JTextField when click on the row,
( I need this to edit the data base from the JTable )
My table model
static class TableDataModel extends AbstractTableModel
{
private List nomColonnes;
private List tableau;
public TableDataModel(List nomColonnes, List tableau){
this.nomColonnes = nomColonnes;
majDonnees(tableau);
}
public void majDonnees(List nouvellesDonnees){
this.tableau = nouvellesDonnees;
fireTableDataChanged();
}
public int getRowCount(){
return tableau.size();
}
public int getColumnCount(){
return nomColonnes.size();
}
public Object getValueAt(int row, int col){
return ((ArrayList)( tableau.get(row))).get(col);
}
public String getColumnName(int col){
return nomColonnes.get(col).toString();
}
public Class getColumnClass(int c)
{
return getValueAt(0,c).getClass();
}
public boolean isCellEditable(int row, int col){
return true;
}
public void setValueAt(Object value, int row, int col)
{
((List)tableau.get(row)).set(col,value);
fireTableCellUpdated(row, col);
//i suppose i should update the database here
}
}

Use a ListSelectionListener. Whenever a row is selected you get the data from the model for the given row using table.getValueAt(...) and then you display the data in the text field of your form.