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How to clear a selected cell in JTable?

I can select and set focus to cells in a JTable by clicking it, now I want to change the value on the focused cell. In order to change the value of it, I have to double click! Is there any way to clear/change the value of that focused cell (by single-clicking)?
I have tried jTable1.setValueAt("", row, column);, this clears the value in the background(It's not updated in the GUI/Same old value appears in the cell).
Table structure:
jTable1.addMouseListener(new MouseAdapter(){
#Override
public void mouseClicked(final MouseEvent e) {
if (e.getClickCount()==1){
final JTable jTable=(JTable)e.getSource();
final int row = jTable.getSelectedRow();
final int column = jTable.getSelectedColumn();
jTable1.editCellAt(row,column);
jTable1.getEditorComponent().requestFocus();
final Double valueInCell = (Double)jTable.getValueAt(row, column);
System.out.println(valueInCell);
}
}
});

If all you desire is to clear or change a JTable cell that holds Strings, why not simply call JTable's setValueAt(Object o, int row, int column) method? To clear, pass in "", to set to something different, then pass in a different String.
For example, my minimal reproducible example:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.*;
import java.util.Arrays;
import java.util.Vector;
import java.util.Random;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
#SuppressWarnings("serial")
public class TableFoo extends JPanel {
private static final Vector<String> COLUMN_NAME_VECTOR = new Vector<String>(
Arrays.asList(new String[] { "A", "B", "C" }));
private static final int COLUMN_COUNT = COLUMN_NAME_VECTOR.size();
private JTable table = new JTable();
public TableFoo() {
table.setFillsViewportHeight(true);
fillTableData();
MyMouse myMouse = new MyMouse();
table.addMouseListener(myMouse);
setLayout(new BorderLayout());
add(new JScrollPane(table), BorderLayout.CENTER);
}
class MyMouse extends MouseAdapter {
#Override
public void mousePressed(final MouseEvent e) {
final int row = table.getSelectedRow();
final int column = table.getSelectedColumn();
table.setValueAt("", row, column);
}
}
public void fillTableData() {
Vector<Vector<String>> matrix = new Vector<Vector<String>>();
int rowCount = 8;
for (int i = 0; i < rowCount ; i++) {
Vector<String> row = new Vector<String>();
for (int j = 0; j < COLUMN_COUNT; j++) {
String rowText = String.format("row %d col %d", i, j);
row.add(rowText );
}
matrix.add(row);
}
DefaultTableModel model = new DefaultTableModel(matrix,
COLUMN_NAME_VECTOR);
table.setModel(model);
}
private static void createAndShowGui() {
TableFoo mainPanel = new TableFoo();
JFrame frame = new JFrame("TableFoo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}

disable multi-column selection

Is there any way to disable selection of multiple columns for a Swing JTable? I've disabled selection all together in the "Tid" column by overriding the selection intervals of the selection model:
myTable.getColumnModel().setSelectionModel(new DefaultListSelectionModel() {
private boolean isSelectable(int index0, int index1) {
return index1 != 0;
}
#Override
public void setSelectionInterval(int index0, int index1) {
if(isSelectable(index0, index1)) {
super.setSelectionInterval(index0, index1);
}
}
#Override
public void addSelectionInterval(int index0, int index1) {
if(isSelectable(index0, index1)) {
super.addSelectionInterval(index0, index1);
}
}
});
And my guess is that one can also disallow the selection of multiple columns by overriding methods in the selection model. But I can't really figure out how to accomplish that.
Allowed selection
Disallowed selection

First get the TableColumnModel from the JTable
TableColumnModel columnModel = table.getColumnModel();
Next, get the LstSeletionModel for the TableColumnModel
ListSelectionModel selectionModel = columnModel.getSelectionModel();
With this, you could set the selectionMode that the model will use, for example
selectionModel.setSelectionModel(ListSelectionModel.SINGLE_SELECTION)
See the JavaDocs for ListSelectionModel and TableColumnModel for more details
Runnable example....
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new BorderLayout());
DefaultTableModel model = new DefaultTableModel(0, 10);
for (int row = 0; row < 10; row++) {
String[] data = new String[10];
for (int col = 0; col < 10; col++) {
data[col] = row + "x" + col;
}
model.addRow(data);
}
JTable table = new JTable(model);
table.setColumnSelectionAllowed(true);
table.setRowSelectionAllowed(true);
table.getColumnModel().getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
add(new JScrollPane(table));
}
}
}

Actually, it was a simple enough addition to my already existing overrides that was needed.
#Override
public void setSelectionInterval(int index0, int index1) {
if (isSelectable(index0, index1)) {
if (index0==index1) { //The if condition needed.
super.setSelectionInterval(index0, index1);
}
}
}
I realised upon reviewing the JavaDoc and the DefaultListSelectionModel that the index0 and index1 were just what I was looking for - the column span. So by doing the call to the superclass if and only if the two column indices are equal, selection of multiple columns is not possible.

How to add a row in a JTable when click focus is out of the Table and <ENTER> key is pressed

I am designing one client interaction application in which the requirement is as follows:-
User had already done editing in the cells.
On pressing Enter key new row is inserted.
From the above, if client edit something in a cell and press ENTER key it will make a new row with edit. In other words, when user is out of focus from the cells ENTER key must be used to add a row. And when user has focused one cell and press ENTER it must not add a row.
On cell focus + ENTER key pressed = do nothing but edit of cell.
Outside cell focus + ENTER key pressed = New row is added.
SimpleTableDemo
package com.ajay.test;
/*
* SimpleTableDemo.java requires no other files.
*/
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class SimpleTableDemo extends JPanel {
private boolean DEBUG = false;
private JTable table = null;
public SimpleTableDemo() {
super(new GridLayout(1,0));
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)}};
table = new JTable(new javax.swing.table.DefaultTableModel(data, columnNames));
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
if (DEBUG) {
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
printDebugData(table);
}
});
}
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
KeyboardFocusManager.getCurrentKeyboardFocusManager()
.addKeyEventDispatcher(new KeyEventDispatcher() {
#Override
public boolean dispatchKeyEvent(KeyEvent e) {
if(e.getID() == KeyEvent.KEY_PRESSED)
{
if(e.getKeyCode() == KeyEvent.VK_ENTER)
{
addRow();
}
}
return false;
}
});
//Add the scroll pane to this panel.
add(scrollPane);
}
private void addRow()
{
DefaultTableModel model = (DefaultTableModel)table.getModel();
if (model != null) {
Vector v = new Vector(1);
for (int j = 0; j < table.getColumnCount(); j++){
v.add("");
}
model.addRow(v);
}
}
private void printDebugData(JTable table) {
int numRows = table.getRowCount();
int numCols = table.getColumnCount();
javax.swing.table.TableModel model = table.getModel();
System.out.println("Value of data: ");
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + model.getValueAt(i, j));
}
System.out.println();
}
System.out.println("--------------------------");
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("SimpleTableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
SimpleTableDemo newContentPane = new SimpleTableDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
Please suggest something to add a row if cell focus is not there. And to edit if cell focus is there.

I found the resolution for the above problem by the following code:-
package com.ajay.test;
/*
* SimpleTableDemo.java requires no other files.
*/
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class SimpleTableDemo extends JPanel {
private boolean DEBUG = false;
private JTable table = null;
public SimpleTableDemo() {
super(new GridLayout(1,0));
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)}};
table = new JTable(new javax.swing.table.DefaultTableModel(data, columnNames));
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
if (DEBUG) {
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
printDebugData(table);
}
});
}
table.addKeyListener(new KeyListener(){
#Override
public void keyPressed(KeyEvent e) {
if(e.getID() == KeyEvent.KEY_PRESSED)
{
if(e.getKeyCode() == KeyEvent.VK_ENTER)
{
addRow();
}
}
}
#Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
#Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
}
);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
add(scrollPane);
}
private void addRow()
{
DefaultTableModel model = (DefaultTableModel)table.getModel();
if (model != null) {
Vector v = new Vector(1);
for (int j = 0; j < table.getColumnCount(); j++){
v.add("");
}
model.addRow(v);
}
}
private void printDebugData(JTable table) {
int numRows = table.getRowCount();
int numCols = table.getColumnCount();
javax.swing.table.TableModel model = table.getModel();
System.out.println("Value of data: ");
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + model.getValueAt(i, j));
}
System.out.println();
}
System.out.println("--------------------------");
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("SimpleTableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
SimpleTableDemo newContentPane = new SimpleTableDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
We also have to add KeyBoardListener in the above code.
Thanks!

I don't know if you have get exactly what you want, but only adding a condition in your listener you can do it (If I've understood you):
/*
* SimpleTableDemo.java requires no other files.
*/
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class SimpleTableDemo extends JPanel {
private boolean DEBUG = false;
private JTable table = null;
public SimpleTableDemo() {
super(new GridLayout(1,0));
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)}};
DefaultTableModel tableModel = new DefaultTableModel(data, columnNames);
table = new JTable(tableModel);
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
if (DEBUG) {
table.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
printDebugData(table);
}
});
}
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
KeyboardFocusManager.getCurrentKeyboardFocusManager()
.addKeyEventDispatcher(new KeyEventDispatcher() {
#Override
public boolean dispatchKeyEvent(KeyEvent e) {
if(e.getID() == KeyEvent.KEY_PRESSED)
{
if(e.getKeyCode() == KeyEvent.VK_ENTER && table.isEditing()==false)
{//HERE IS THE CHANGE
addRow();
}
}
return false;
}
});
//Add the scroll pane to this panel.
add(scrollPane);
}
private void addRow()
{
DefaultTableModel model = (DefaultTableModel)table.getModel();
if (model != null) {
Vector v = new Vector(1);
for (int j = 0; j < table.getColumnCount(); j++){
v.add("");
}
model.addRow(v);
}
}
private void printDebugData(JTable table) {
int numRows = table.getRowCount();
int numCols = table.getColumnCount();
javax.swing.table.TableModel model = table.getModel();
System.out.println("Value of data: ");
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + model.getValueAt(i, j));
}
System.out.println();
}
System.out.println("--------------------------");
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("SimpleTableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
SimpleTableDemo newContentPane = new SimpleTableDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
With adding the table.isEditing()==false condition, you will add a new row when you press ENTER, but not if you have just edited a cell and press ENTER.

row selection not moving with row moves in JTable

I have following code:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.nimbus.NimbusLookAndFeel;
import javax.swing.table.DefaultTableModel;
public class NewClass1 extends JFrame {
private JTable table;
private JScrollPane scrollPane;
private DefaultTableModel defaultTableModel;
public NewClass1() {
setLocationByPlatform(true);
setLayout(new BorderLayout());
setPreferredSize(new Dimension(600, 400));
setTitle("Table Issues");
setDefaultCloseOperation(EXIT_ON_CLOSE);
createTableModel();
table = new JTable(defaultTableModel);
scrollPane = new JScrollPane(table);
getContentPane().add(scrollPane, BorderLayout.CENTER);
pack();
}
private void createTableModel() {
Vector cols = new Vector();
cols.add("A");
Vector rows = new Vector();
for (int i = 0; i < 50; i++) {
Vector row = new Vector();
row.add((i + 1) + "");
rows.add(row);
}
defaultTableModel = new DefaultTableModel(rows, cols) {
Class[] types = new Class[]{
String.class
};
#Override
public Class getColumnClass(int columnIndex) {
return types[columnIndex];
}
#Override
public boolean isCellEditable(int row, int column) {
return false;
}
};
}
public static void main(String[] args) {
try {
UIManager.setLookAndFeel(new NimbusLookAndFeel());
} catch (Exception e) {
}
final NewClass1 nc = new NewClass1();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
nc.setVisible(true);
}
});
while (true) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
int row = (int) (Math.random() * 50);
int move = (int) (Math.random() * 50);
nc.defaultTableModel.moveRow(row, row, move);
}
});
try{
Thread.sleep(1000);
}catch(Exception e){
}
}
}
}
Please run the above code and select row.
My problem is with row movement, row selection is not moving. It is staying at fixed position. Suppose I selected row with column value 25, selected row must be of column value 25 after row movements.
Please help me on this.
My real problem is, user will select row and clicks menu to perform action, meanwhile other threads may have moved rows, and performed action will be on other row than actual one.

The easiest way is to remember the selected row somewhere outside of the ListSelectionModel and adjust the selection whenever the TableModel changes. For example you could do this:
public class NewClass1 extends JFrame {
private JTable table;
private DefaultTableModel defaultTableModel;
private JScrollPane scrollPane;
private class SelectionHelper implements ListSelectionListener, TableModelListener {
private Object selectedRow;
#Override
public void valueChanged(ListSelectionEvent event) {
if (!event.getValueIsAdjusting()) return;
int selectedIndex = table.getSelectedRow();
if (selectedIndex >= 0) {
selectedRow = defaultTableModel.getDataVector().get(selectedIndex);
} else {
selectedRow = null;
}
}
#Override
public void tableChanged(TableModelEvent event) {
if (selectedRow == null) return;
int selectedIndex = defaultTableModel.getDataVector().indexOf(selectedRow);
table.getSelectionModel().setSelectionInterval(selectedIndex, selectedIndex);
}
}
public NewClass1() {
// ...
createTableModel();
table = new JTable(defaultTableModel);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
SelectionHelper helper = new SelectionHelper();
table.getModel().addTableModelListener(helper);
table.getSelectionModel().addListSelectionListener(helper);
// ...
}
// ...
}
Note however, that you should adjust this code for production use, for example in regards to thread safety or portability (using the table and defaultTableModel attributes in the inner class is bad style).

How to strikethrough text of a selected row(having checkbox in first column) of JTable?

I have a Jtable with a checkbox in first column. I want to strikethrough text of a row when the checkbox is selected. (eg same as we do in microsoft outlook when our task is complete.) I have tried using AttributeString, but not able to do it.
Can anyone please guide me to solve it?
String strStrike;
AttributedString as;
public void setTextStrikeThrough() {
for(int r=0;r< taskcells.length;r++) {
if (ttable.getValueAt(r,0).equals(Boolean.TRUE)) {
for(int c=2;c<7;c++) {
strStrike+=taskcells[r][c-1];
}//end inner for as=new
AttributedString(strStrike);
as.addAttribute(TextAttribute.STRIKETHROUGH,
TextAttribute.STRIKETHROUGH_ON);
as.getIterator();
}//end if
}//end for
}
I am not getting exactly where to call this method. I want to strikethrough text of a row when checkbox of that row has been checked.

I don't know that an ActionListener will work well for a JCheckBox in a JTable since the check box isn't a real button but rather a rendering of a checkbox. Perhaps playing with the table model will help. For instance you can use HTML to display a strike through of Strings displayed in table cells. For instance below I create a custom TableModel that extends DefaultTableModel and holds rows with a Boolean object followed by objects of a TextWrapper class that I've created that changes its toString result depending on a boolean.
e.g.,
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
public class StrikeThroughRow {
public static final Object[][] DATA = {{Boolean.TRUE, "Monday", "fe"},
{Boolean.FALSE, "Tuesday", "fi"}, {Boolean.TRUE, "Wednesday", "fo"},
{Boolean.FALSE, "Thursday", "fum"}, {Boolean.TRUE, "Friday", "foo"}};
public StrikeThroughRow() {
}
private static void createAndShowUI() {
JTable table = new JTable(new StrikeThroughModel(DATA));
JScrollPane scrollpane = new JScrollPane(table);
JFrame frame = new JFrame("StrikeThroughRow");
frame.getContentPane().add(scrollpane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
createAndShowUI();
}
});
}
}
class StrikeThroughModel extends DefaultTableModel {
public StrikeThroughModel(Object[][] data) {
super(new String[]{"Check", "Work Day", "Giant Speak"}, 0);
for (int i = 0; i < data.length; i++) {
Vector<Object> rowVect = new Vector<Object>();
rowVect.add(data[i][0]);
if (data[i].length > 1) {
for (int j = 1; j < data[i].length; j++) {
rowVect.add(new TextWrapper(data[i][j].toString(), (Boolean)data[i][0]));
}
}
addRow(rowVect);
}
}
#Override
public Class<?> getColumnClass(int columnIndex) {
if (columnIndex == 0) {
return Boolean.class;
}
return super.getColumnClass(columnIndex);
}
#Override
public void setValueAt(Object value, int row, int column) {
if (column == 0) {
for (int i = 1; i < getColumnCount(); i++) {
TextWrapper textWrapper = (TextWrapper) getValueAt(row, i);
textWrapper.setStrikeThrough((Boolean) value);
fireTableCellUpdated(row, i);
}
}
super.setValueAt(value, row, column);
}
}
class TextWrapper {
private String text;
private boolean strikeThrough = false;
public TextWrapper(String text) {
this.text = text;
}
public TextWrapper(String text, boolean strikeThrough) {
this(text);
this.strikeThrough = strikeThrough;
}
#Override
public String toString() {
if (strikeThrough) {
return "<html><strike>" + text + "</html></strike>";
}
return text;
}
public void setStrikeThrough(boolean strikeThrough) {
this.strikeThrough = strikeThrough;
}
}
I'm betting that there are better solutions including creating a custom renderer for your cells, but the code above offers a quick and dirty fix.

Here is how you can create a "strike through font":
Map attributes = component.getFont().getAttributes();
attributes.put(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
component.setFont( new Font(attributes) );
One way to apply the font is to use the Table Row Rendering approach. Take a look at the background color example. Instead of setting the background of the renderer you can set the Font.
Otherwise you would need to create a custom renderer for the columns in your table to use the appropriate Font.

Add a listener to the checkbox which will add/remove the from the label. Here is an example of box and label maybe helpful:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class check {
public static void main(String args[]) {
JFrame frame = new JFrame("for bsm");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JCheckBox box = new JCheckBox("check me");
final JLabel label = new JLabel("<html>text</html>");
label.setFont(new Font("helvetica", Font.PLAIN, 12));
label.setForeground(new Color(50, 50, 25));
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
AbstractButton abstractButton = (AbstractButton) actionEvent.getSource();
if(abstractButton.getModel().isSelected())
label.setText(label.getText().replace("<html>", "<html><strike>").replace("</html>", "</strike></html>"));
else
label.setText(label.getText().replace("<html><strike>", "<html>").replace("</strike></html>", "</html>"));
}
};
box.addActionListener(actionListener);
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout(10, 10));
panel.add(label, BorderLayout.NORTH);
panel.add(box, BorderLayout.SOUTH);
panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
frame.add(panel);
frame.setSize(300, 200);
frame.setVisible(true);
}
}