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A JComboBox in a specific cell in JTable

I would like to know how to set up a JComboBox in a particular cell in a JTable.
I have seen people using TableColumn setCellEditor(new DefaultCellEditor(comboBox)).
But this is for an entire column, I would like a specific cell.
So maybe I should do a custom TableCellEditor that would fit my needs, but I am a little lost on how to do it...
The goal of this is to manage filters on parameters. There are two kinds of filters:
The one that compares two values, for instance: number of balloons > 5
The one that will say is a value is inside a range of value, for instance: parameter name is inside {"one", "two", "three", "seven"}.
screenshot of my JTable:
As we can see in the picture, when there is the "comparator" "is among", we would need a JComboBox in cell[0][2] to choose the values of the range within a complete set of fields.
While cell[1][2] does not need a JComboBox, but just an editable cell.
I hope I have been clear and thank you for your help.
EDIT:
I was able to display a JComboBox only to realize, I couldn't select multiple values on it. So now I am trying to display a JList instead of a ComboBox.
But when I click on the cell, the JList is not displayed, I don't know why.
Here is my code:
JTable tableParametersFilter = new JTable(modelParametersFilter){
// Determine editor to be used by row
public TableCellEditor getCellEditor(int row, int column)
{
int modelColumn = convertColumnIndexToModel( column );
int modelRow = convertRowIndexToModel( row );
Parameter_Filter pf = view.listParameter_Filter.get(modelRow);
if(modelColumn == 2 && pf instanceof Parameter_Filter_To_List_Of_Fields) {
Parameter_Filter_To_List_Of_Fields pftlof = (Parameter_Filter_To_List_Of_Fields)pf;
JList<String> list = new JList<String>(pftlof.list_of_fields_total_names);
list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION );
list.setLayoutOrientation(JList.VERTICAL_WRAP);
list.setVisibleRowCount(-1);
return new TableCellEditor() {
#Override
public boolean stopCellEditing() {
return false;
}
#Override
public boolean shouldSelectCell(EventObject anEvent) {
return false;
}
#Override
public void removeCellEditorListener(CellEditorListener l) {
}
#Override
public boolean isCellEditable(EventObject anEvent) {
return true;
}
#Override
public Object getCellEditorValue() {
return list.getSelectedValuesList().toString();
}
#Override
public void cancelCellEditing() {
}
#Override
public void addCellEditorListener(CellEditorListener l) {
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
return list;
}
};
}
return super.getCellEditor(row, column);
}
};
Any suggestions?

I have solved my problem.
I have not been able to add multiple choice JComboBox, or a displayable JList on the Cell of the Jtable.
Instead, I have used a JOptionPane that displayed a JList.
Here's the code:
tableParametersFilter.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
JTable target = (JTable)e.getSource();
int row = target.getSelectedRow();
int column = target.getSelectedColumn();
if(column == 2){
Parameter_Filter pf = view.listParameter_Filter.get(row);
if(pf instanceof Parameter_Filter_To_List_Of_Fields) {
Parameter_Filter_To_List_Of_Fields pftlof = (Parameter_Filter_To_List_Of_Fields) pf;
JList<String> jlist = new JList<String>(pftlof.list_of_fields_total_names);
String StringOfIntArray = (String) tableParametersFilter.getValueAt( row, 2);
int[] list_parameter_id = Statique.StringOfIntArrayToIntegerArray(StringOfIntArray);
if(list_parameter_id.length < jlist.getModel().getSize()) {
int[] list_places = pftlof.getPlaceOfParameters(list_parameter_id);
for(int i = 0; i < list_places.length; i++) {
jlist.setSelectedIndices(list_places);
}
}
JScrollPane scrollPane = new JScrollPane(jlist);
scrollPane.setPreferredSize( new Dimension( 500, 500 ) );
JOptionPane.showMessageDialog(
null, scrollPane, "Multi-Select Example", JOptionPane.PLAIN_MESSAGE);
int[] SelectedIndices = jlist.getSelectedIndices();
Integer[] listParametersId = new Integer[SelectedIndices.length];
for(int i = 0; i < SelectedIndices.length; i++) {
int id = pftlof.list_of_fields_Total[SelectedIndices[i]].id;
try {
Parameter p = Parameter.getParameter(
id,
Parameter_Filter_To_List_Of_Fields.getTotal_Parameter_In_Parameter_Filter_To_List_Of_Fields());
listParametersId[i] = p.id;
} catch (NoSuchFieldException e1) {
e1.printStackTrace();
}
}
System.out.println(Arrays.toString(listParametersId));
tableParametersFilter.setValueAt(Arrays.toString(listParametersId), row, 2);
}
}
}
}

Editing cell restrictions of a column in a JTable / TableModel

I am looking to modify the way cell input is handled in my JTable. Currently I am using a DefaultTableModel as seen below.
DefaultTableModel model = new DefaultTableModel() {
#Override
public boolean isCellEditable(int row, int col) {
return col == 1 || col == 2 || col == 6;
}
#Override
public Class getColumnClass(int col) {
if (col == 6) {
return Integer.class;
} else {
return String.class;
}
}
};
With this code column 6 forces the user to input an Integer. I would like to take this further by not allowing the number to be outside of a range (e.g. 1-100) and also for the field to never be empty (The column will have data in it prior to user interaction). I have read the docummentation but cannot seem to find anything that manages the behaviour of column types. Thanks!

You would need to create a custom editor.
The following example demonstrates and editor that forces the data to be 5 characters:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
public class TableFiveCharacterEditor extends DefaultCellEditor
{
private long lastTime = System.currentTimeMillis();
public TableFiveCharacterEditor()
{
super( new JTextField() );
}
public boolean stopCellEditing()
{
JTable table = (JTable)getComponent().getParent();
try
{
String editingValue = (String)getCellEditorValue();
if(editingValue.length() != 5)
{
JTextField textField = (JTextField)getComponent();
textField.setBorder(new LineBorder(Color.red));
textField.selectAll();
textField.requestFocusInWindow();
JOptionPane.showMessageDialog(
table,
"Please enter string with 5 letters.",
"Alert!",JOptionPane.ERROR_MESSAGE);
return false;
}
}
catch(ClassCastException exception)
{
return false;
}
return super.stopCellEditing();
}
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column)
{
Component c = super.getTableCellEditorComponent(
table, value, isSelected, row, column);
((JComponent)c).setBorder(new LineBorder(Color.black));
return c;
}
private static void createAndShowUI()
{
JTable table = new JTable(5, 5);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
// Use a custom editor
TableCellEditor fce = new TableFiveCharacterEditor();
table.setDefaultEditor(Object.class, fce);
JFrame frame = new JFrame("Table Five Character Editor");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add( scrollPane );
frame.pack();
frame.setLocationByPlatform( true );
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowUI();
}
});
}
}
You would need to modify the editor to make sure:
the data is an Integer by using the Integer.parseInt(...) method
that the Integer value is in your desired range
Edit:
how can I apply this to influence one column rather than the entire table.
You can add the editor to the TableColumn:
table.getColumnModel().getColumn(...).setCellEditor(...);

Overriding the behaviour of the DefaultCellEditor achieves the desired outcome.
DefaultCellEditor editor = new DefaultCellEditor(new JTextField()) {
#Override
public boolean stopCellEditing() {
JTable table = (JTable) getComponent().getParent();
try {
String value = (String) getCellEditorValue();
if (Integer.parseInt(value) < 1) {
JTextField textField = (JTextField) getComponent();
textField.setBorder(new LineBorder(Color.red));
textField.selectAll();
textField.requestFocusInWindow();
return false;
}
} catch (NumberFormatException ex) {
return false;
}
return super.stopCellEditing();
}
};
Then added to the desired column of the table.
table.getColumnModel().getColumn(6).setCellEditor(editor);
Edit: The behaviour inside the if statement will not occur if a NumberFormatException is thrown, you may want to put the same lines of code within the catch.

Java JComboBox icon

Displaying data in a JTable. One column serves as a field Checkbox. The problem is that instead of the icon appears in the display ChceckBox true / false. How do I fix this?
Add data:
private DefaultTableModel headermodel = new DefaultTableModel();
private JScrollPane scrollHeader = new JScrollPane();
private JTable headerTable = new JTable();
public void loadHead(){
header = model.getHead();
int ids=0;
int id=1;
for(String head: header) {
headermodel.addRow(new Object[]{id,head});
headerMap.put(ids,head);
id++;
ids++;
count++;
}
header.clear();
}
and display data in JTable:
headerTable = new JTable(headermodel);
headermodel.addColumn("Lp.");
headermodel.addColumn("Column Name");
headermodel.addColumn("Constraint");
headermodel.addColumn("Sum");
scrollHeader = new JScrollPane(headerTable);
TableColumnModel tcm = headerTable.getColumnModel();
tcm.getColumn(2).setCellEditor(new DefaultCellEditor(new JCheckBox()));
tcm.getColumn(3).setCellEditor(new DefaultCellEditor(new JCheckBox()));
tcm.getColumn(3).setCellRenderer(headerTable.getDefaultRenderer(boolean.class));
add(scrollHeader);

The model's getColumnClass(int columnIndex) method should return Boolean.class for the appropriate column index so that the renderer knows to render a check box for that column. For example,...
DefaultTableModel headermodel = new DefaultTableModel(){
#Override
public Class<?> getColumnClass(int columnNumber) {
if (columnNumber == 2 || columnNumber == 3) {
return Boolean.class;
} else {
return super.getColumnClass(columnNumber);
}
}
}
You shouldn't have to set the cell renderer for these columns for this since the default cell renderer will handle Boolean.class appropriately.

AbstractTableModel and cell editor

The example i have found:
http://www.java2s.com/Code/Java/Swing-Components/ButtonTableExample.htm
show how to create a JTable with specified column (button). It works properly, but the my problem is, that i need to use AbstractTableModel instead of DefaultTableModel (as at the example shows).
So i created my own TableModel, which extends AbstractTableModel:
public class TableModel extends AbstractTableModel {
//..
}
and replaced:
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][] { { "button 1", "foo" },
{ "button 2", "bar" } }, new Object[] { "Button", "String" });
JTable table = new JTable(dm);
for:
JTable table = new JTable(new TableModel());
And then nothing happens, when i will click button at some row. Any suggestions?

Make sure you override AbstractTableModel.isCellEditable method to return true for the column with the button otherwise the editor will not be triggered. This method by default returns false.
Also, make sure you override getColumnName() to return proper name since the sample that you linked tries to find a column with name "Button" to setup the editor.
You may find a Table Button Column implementation by #camickr useful.
This demo model works OK with the editor and the renderer from the linked sample:
public class DemoTableModel extends AbstractTableModel {
#Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return (columnIndex == 0);
}
#Override
public int getRowCount() {
return 2;
}
#Override
public int getColumnCount() {
return 2;
}
#Override
public String getColumnName(int columnIndex) {
switch (columnIndex) {
case 0:
return "Button";
case 1:
return "Value";
}
return null;
}
#Override
public Object getValueAt(int rowIndex, int columnIndex) {
switch (columnIndex) {
case 0:
return "Button";
case 1:
return "Value";
}
return null;
}
}

Problem with removing last row of JTable

This is my first time asking here so forgive me if something isn't appropriate, and sorry if my English isn't very good.
Well, to make it short, currently I'm developing a Java desktop app with Swing and I have a problem using table. I have rows with each row have a button to delete the row. Everything is okay (i can delete rows with no problem) until i try to delete the last row. The last row can be deleted but apparently there is an exception, something like this:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 4 >= 4
at java.util.Vector.elementAt(Vector.java:427)
at javax.swing.table.DefaultTableModel.setValueAt(DefaultTableModel.java:648)
at javax.swing.JTable.setValueAt(JTable.java:2710)
at javax.swing.JTable.editingStopped(JTable.java:4712)
at javax.swing.AbstractCellEditor.fireEditingStopped(AbstractCellEditor.java:125)
From the stack trace, it seems that "4" is my previously deleted last row index, but i have no idea how to deal with this. I already search for solution but i still can't solve it. Note that there are still other rows when i delete the last row, and after that i can't delete the others rows. The same exception also resulted when i click the delete button.
Oh. and I use removeRow() from DefaultTableModel to delete the row. Any help will be appreciated. Thanks.
EDIT
These are the code I use.
public class ViewDetail extends JInternalFrame implements ActionListener {
...
String column[] = { "Aaa", "Bbb", "Delete This"};
tableModel = new DefaultTableModel();
Object row[][] = new Object[size][column.length];
//fill the data from db
int r = 0;
for (int i = 0; i < size; i++) {
row[r][0] = ...;
row[r][1] = ...;
row[r][2] = "Delete";
r++;
}
tableModel.setDataVector(row, column);
table = new JTable(tableModel);
tableColumn = table.getColumn("Aaa");
tableColumn.setPreferredWidth(75);
tableColumn = table.getColumn("Bbb");
tableColumn.setPreferredWidth(75);
tableColumn = table.getColumn("Delete This");
tableColumn.setPreferredWidth(75);
tableColumn.setCellRenderer(new ButtonRenderer());
tableColumn.setCellEditor(new ButtonEditor(new JCheckBox());
...
}
public class ButtonRenderer extends JButton implements TableCellRenderer {
public ButtonRenderer() {
setOpaque(true);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(UIManager.getColor("Button.background"));
}
setText((value == null) ? "" : value.toString());
return this;
}
}
public class ButtonEditor extends DefaultCellEditor {
protected JButton button;
private String label;
private boolean isPushed;
private JTable table;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
isPushed = true;
this.table = table;
return button;
}
public Object getCellEditorValue() {
if (isPushed) {
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
tableModel.removeRow(table.getSelectedRow());
}
isPushed = false;
return new String(label);
}
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
protected void fireEditingStopped() {
super.fireEditingStopped();
}
}

Swing is trying to set the new value into the row you remove! Try moving the remove code into a Runnable and use invokeLater in the swing utility class to execute it.

could you post the code where you init, add elements and delete in your JTable?
My first guess is that you are either doing the classical mistake
"I have 4 elements in my table so to delete the last one I remove(4)" when you your table goes from 0 to 3 in indices
or you are trying to remove several object in the same loop like
for(int i = 0; i<lenght; i++){
if(i%2==0){//every even number
tab.remove(i);
}
}
then your are modifying the size of your table, the elements are shifted but your not taking it in account when removing.
those are just guesses/pointer to what might cause the problem. please post your code if this doesn't solve it

The Table Button Column shows how you can render a column as a button and how to add an Action that is executed when the button is clicked. The example Action just happens to show how to delete a row.

Here you need to remove only 0 th row that should be iterated
private void refreshTable() {
int rowCount= model.getRowCount();
// System.out.println(rowCount);
for(int i=0;i<rowCount;i++ ){
model.removeRow(0);
//System.out.println(i);
}
}

you can add new vaiable and check to fireEditingStopped() :
public class ButtonEditor extends DefaultCellEditor {
//create new variable
private boolean isDeleteRow = false;
/////////////////
protected JButton button;
private String label;
private boolean isPushed;
private JTable table;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
isPushed = true;
this.table = table;
// set false when click to button
isDeleteRow = false;
/////////////////
return button;
}
public Object getCellEditorValue() {
if (isPushed) {
// set true when isPushed button
isDeleteRow = true;
/////////////////
}
isPushed = false;
return new String(label);
}
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
protected void fireEditingStopped() {
super.fireEditingStopped();
//check if isDeleteRow, remove row
if(isDeleteRow)
{
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
tableModel.removeRow(table.getSelectedRow());
}
/////////////////
}
}