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JTable disable Column Selection

I am trying to disable selection of rows in all but 1 column in a JTable. (Layer Column in the example screenshot). In the other columns I have spinners and checkboxes that I want the user to be able to interact with, without effecting the selections in the Layer Column.
My initial attempt was to store up any selected rows as they occur, and then revert to that set of selected rows when a cell outside of column A is selected. It sort of works, but the problem is that it "flashes" when the other cell is selected, before it reverts it back. How can I prevent the "flash"?
Here is an example I set up to illustrate the problem:
public class TableTest {
static int[] selectedRows = new int[0];
final static String[] columns = new String[] { "Layer", "Enabled", "Read Only", "Storage" };
final static DefaultTableModel model = new DefaultTableModel(new Vector(), new Vector(Arrays.asList(columns))) {
#Override
public void setValueAt(Object obj, int row, int col) {
if (obj instanceof Boolean || obj instanceof Integer) {
Object localObject = super.getValueAt(row, col);
if (localObject instanceof Integer) {
Integer val = (Integer) localObject;
((SpinnerCell) obj).getSpinner().setValue(val);
} else if (localObject instanceof Boolean) {
Boolean val = (Boolean) localObject;
((CheckboxCell) obj).getCheckBox().setEnabled(val);
}
} else {
super.setValueAt(obj, row, col);
}
}
#Override
public boolean isCellEditable(int rowIndex, int colIndex) {
return colIndex != 0;
}
};
public static void main(String[] a) {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JTable table = new JTable(model) {
#Override
public TableCellRenderer getCellRenderer(final int rowIndex, int colIndex) {
int reaRowlIndex = convertRowIndexToModel(rowIndex);
int realColumnIndex = convertColumnIndexToModel(colIndex);
Object o = model.getValueAt(reaRowlIndex, realColumnIndex);
if (o instanceof TableCellRenderer) {
return (TableCellRenderer) o;
} else {
return super.getCellRenderer(reaRowlIndex, realColumnIndex);
}
}
//
#Override
public TableCellEditor getCellEditor(final int rowIndex, int colIndex) {
int reaRowlIndex = convertRowIndexToModel(rowIndex);
int realColumnIndex = convertColumnIndexToModel(colIndex);
Object o = model.getValueAt(reaRowlIndex, realColumnIndex);
if (o instanceof TableCellEditor) {
return (TableCellEditor) o;
} else {
return super.getCellEditor(reaRowlIndex, realColumnIndex);
}
}
};
table.getTableHeader().setReorderingAllowed(false);
table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent arg0) {
if (table.getSelectedColumn() == 0) {
selectedRows = table.getSelectedRows();
System.out.println("Selected Rows before " + Arrays.toString(selectedRows));
}
}
});
final ListSelectionModel columnListSelectionModel = table.getColumnModel().getSelectionModel();
columnListSelectionModel.addListSelectionListener(new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent e) {
if (table.getSelectedColumn() != 0) {
table.clearSelection();
System.out.println("Selected Rows during " + Arrays.toString(table.getSelectedRows()));
for (int i = 0; i < selectedRows.length; i++) {
table.getSelectionModel().addSelectionInterval(selectedRows[i], selectedRows[i]);
}
System.out.println("Selected Rows after " + Arrays.toString(table.getSelectedRows()));
}
}
});
model.addRow(new Object[] { "Bird", new CheckboxCell(new JCheckBox()),
new CheckboxCell(new JCheckBox()), new SpinnerCell(new JSpinner()) });
model.addRow(new Object[] { "Cat", new CheckboxCell(new JCheckBox()), new CheckboxCell(new JCheckBox()),
new SpinnerCell(new JSpinner()) });
model.addRow(new Object[] { "Dog", new CheckboxCell(new JCheckBox()), new CheckboxCell(new JCheckBox()),
new SpinnerCell(new JSpinner()) });
model.addRow(new Object[] { "Fish", new CheckboxCell(new JCheckBox()),
new CheckboxCell(new JCheckBox()), new SpinnerCell(new JSpinner()) });
model.addRow(new Object[] { "Pig", new CheckboxCell(new JCheckBox()), new CheckboxCell(new JCheckBox()),
new SpinnerCell(new JSpinner()) });
frame.add(new JScrollPane(table));
frame.setSize(300, 200);
frame.setVisible(true);
}
});
}
static class CheckboxCell extends AbstractCellEditor implements TableCellEditor, TableCellRenderer {
private static final long serialVersionUID = 1L;
private JCheckBox checkBox;
public CheckboxCell(JCheckBox inputCheckBox) {
checkBox = inputCheckBox;
}
#Override
public Object getCellEditorValue() {
return checkBox.isSelected();
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row,
int column) {
return checkBox;
}
#Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
return checkBox;
}
public JCheckBox getCheckBox() {
return checkBox;
}
#Override
public boolean isCellEditable(EventObject evt) {
return true;
}
public String toString() {
return checkBox.isSelected() + "";
}
}
static class SpinnerCell extends AbstractCellEditor implements TableCellEditor, TableCellRenderer {
private static final long serialVersionUID = 1L;
private JSpinner editSpinner, renderSpinner;
public SpinnerCell() {
editSpinner = new JSpinner();
JTextField tf = ((JSpinner.DefaultEditor) editSpinner.getEditor()).getTextField();
tf.setForeground(Color.black);
renderSpinner = new JSpinner();
JTextField tf2 = ((JSpinner.DefaultEditor) renderSpinner.getEditor()).getTextField();
tf2.setForeground(Color.black);
}
public SpinnerCell(JSpinner showSpinner) {
editSpinner = showSpinner;
JTextField tf = ((JSpinner.DefaultEditor) editSpinner.getEditor()).getTextField();
tf.setForeground(Color.black);
renderSpinner = showSpinner;
JTextField tf2 = ((JSpinner.DefaultEditor) renderSpinner.getEditor()).getTextField();
tf2.setForeground(Color.black);
}
#Override
public Object getCellEditorValue() {
return editSpinner.getValue();
}
#Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row,
int column) {
return editSpinner;
}
#Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
return renderSpinner;
}
public String toString() {
return editSpinner.getValue().toString();
}
public JSpinner getSpinner() {
return editSpinner;
}
#Override
public boolean isCellEditable(EventObject evt) {
return true;
}
}
}

Here's my short example:
Override JTable#changeSelection(...)
table.setCellSelectionEnabled(true);
Override ListSelectionModel#isSelectedIndex(...)
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class TableTest2 {
public JComponent makeUI() {
String[] columnNames = {"Layer", "Enabled", "Read Only"};
Object[][] data = {
{"Bird", true, false}, {"Cat", true, false},
{"Dog", true, false}, {"Fish", true, false}, {"Pig", true, false}
};
TableModel model = new DefaultTableModel(data, columnNames) {
#Override public Class<?> getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
#Override public boolean isCellEditable(int row, int col) {
return col != 0;
}
};
JTable table = new JTable(model) {
#Override public void changeSelection(
int rowIndex, int columnIndex, boolean toggle, boolean extend) {
if (convertColumnIndexToModel(columnIndex) != 0) {
return;
}
super.changeSelection(rowIndex, columnIndex, toggle, extend);
}
};
table.setAutoCreateRowSorter(true);
table.setCellSelectionEnabled(true);
table.getColumnModel().setSelectionModel(new DefaultListSelectionModel() {
#Override public boolean isSelectedIndex(int index) {
return table.convertColumnIndexToModel(index) == 0;
}
});
return new JScrollPane(table);
}
public static void main(String... args) {
EventQueue.invokeLater(() -> {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new TableTest2().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
});
}
}

If you want to prevent the flash you need to intercept an event before the selection is made because table.getSelectedColumn() only works after a selection has been made and you will always see that selection flash.
You could use a key listener to check for "Right Arrow", "Number Pad Right" and "End" key presses and a mouse clicked listener to check where the user is clicking and then change the event to instead select column A only.
For example see this answer showing how to check where a user clicks the mouse before a selection is made: https://stackoverflow.com/a/7351053/1270000
Then you just need to add some code to select the correct cell in column A instead, and don't forget to consume the event "e.consume()" to prevent the original event from completing with the wrong user selection.

Haven't tried it but you might be able to use a custom ListSelectionModel.
Here is an example that lets you toggle the selection of a row on/off:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ToggleListSelectionModel extends DefaultListSelectionModel
{
#Override
public void setSelectionInterval(int index0, int index1)
{
// Select multiple lines
if (index0 != index1)
{
super.addSelectionInterval(index0, index1);
return;
}
// Toggle selection of a single line
if (super.isSelectedIndex(index0))
{
super.removeSelectionInterval(index0, index0);
}
else
{
super.addSelectionInterval(index0, index0);
}
}
private static void createAndShowGUI()
{
String[] numbers = { "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten" };
final JList<String> list = new JList<String>( numbers );
list.setVisibleRowCount( numbers.length );
list.setSelectionModel(new ToggleListSelectionModel());
// list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
JButton clear = new JButton("Clear");
clear.addActionListener( new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
list.clearSelection();
}
});
JFrame frame = new JFrame("SSCCE");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JScrollPane(list), BorderLayout.CENTER);
frame.add(clear, BorderLayout.PAGE_END);
frame.setLocationByPlatform( true );
frame.pack();
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowGUI();
}
});
}
}
In your case I guess you would need access to the table so you can use the getSelectedColumn() method.
You would remove the logic from the example above and replace it with something like:
if (table.getSelectedColumn() == 0)
super.setSelectionInterval(index0, index1);

How do I make it possible to select text in a JTable cell with editing disabled?

Imagine I'm building an IRC client with Java and I'd like rich text in the chat view to show IRC colors and colored nicks. I'd like to build this with a JTable. I can do that, but the text is then not selectable. Making the table editable doesn't make sense.
I've also investigated:
TextArea - no rich text formatting
JEditPane - can't append, only replace which is bad performance wise
JList - can't select text
So I got a table working I just need the text to be selectable without making it editable. I'd also would only like the text contents, and none of the HTML to be copied into the clipboard upon copying the text selection.
I have tried various iterations of setRowSelectionAllowed(), setColumnSelectionEnabled() and setCellSelectionEnabled() and setSelectionMode the table model returns false for isCellEditable(). Nothing has made the text selectable.
EDIT: as per answer 1 I was wrong about text editor panes so I'm trying those solutions.

I don't know why you don't want to use a JTextPane or JEditorPane. You insert text by its document. Examples here --> How to use Editor Panes and Text Panes.
But for your purpose you can for example do something like this. I override changeSelection to selectAll text when is clicking, the cells are editable but its cellEditors are not editable.
public class JTableTest {
private final DefaultCellEditor cellEditor;
private final JTextField textfield;
private JPanel panel;
private MyTableModel tableModel = new MyTableModel();
private JTable table = new JTable() {
#Override
public TableCellEditor getCellEditor(int row, int column) {
return JTableTest.this.cellEditor;
}
#Override
public void changeSelection(
final int row, final int column, final boolean toggle, final boolean extend) {
super.changeSelection(row, column, toggle, extend);
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
if ((getCellEditor(row, column) != null && !editCellAt(row, column))) {
JTextField textfield=(JTextField)JTableTest.this.cellEditor.getComponent();
textfield.selectAll();
}
}
});
}
};
public JTableTest() {
JScrollPane scroll = new JScrollPane(table);
table.setModel(tableModel);
panel = new JPanel(new BorderLayout());
panel.add(scroll, BorderLayout.CENTER);
textfield = new JTextField();
textfield.setEditable(Boolean.FALSE);
textfield.setBorder(null);
cellEditor = new DefaultCellEditor(textfield);
tableModel.insertValue(new ItemRow("nonEditable", "Editable"));
}
private class ItemRow {
private String column1;
private String column2;
public ItemRow(String column1, String column2) {
this.column1 = column1;
this.column2 = column2;
}
public String getColumn1() {
return column1;
}
public void setColumn1(String column1) {
this.column1 = column1;
}
public String getColumn2() {
return column2;
}
public void setColumn2(String column2) {
this.column2 = column2;
}
}
private class MyTableModel extends AbstractTableModel {
public static final int COLUMN1_INDEX = 0;
public static final int COLUMN2_INDEX = 1;
private final List<ItemRow> data = new ArrayList<>();
private final String[] columnsNames = {
"Column1",
"Column2",};
private final Class<?>[] columnsTypes = {
String.class,
String.class
};
public MyTableModel() {
super();
}
#Override
public Object getValueAt(int inRow, int inCol) {
ItemRow row = data.get(inRow);
Object outReturn = null;
switch (inCol) {
case COLUMN1_INDEX:
outReturn = row.getColumn1();
break;
case COLUMN2_INDEX:
outReturn = row.getColumn2();
break;
default:
throw new RuntimeException("invalid column");
}
return outReturn;
}
#Override
public void setValueAt(Object inValue, int inRow, int inCol) {
System.out.println("Gets called ");
if (inRow < 0 || inCol < 0 || inRow >= data.size()) {
return;
}
ItemRow row = data.get(inRow);
switch (inCol) {
case COLUMN1_INDEX:
row.setColumn1(inValue.toString());
break;
case COLUMN2_INDEX:
row.setColumn2(inValue.toString());
break;
}
fireTableCellUpdated(inRow, inCol);
}
#Override
public int getRowCount() {
return data.size();
}
#Override
public int getColumnCount() {
return columnsTypes.length;
}
#Override
public String getColumnName(int inCol) {
return this.columnsNames[inCol];
}
#Override
public Class<?> getColumnClass(int columnIndex) {
return this.columnsTypes[columnIndex];
}
/**
*
* #param row
*/
public void insertValue(ItemRow row) {
data.add(row);
fireTableRowsInserted(data.size() - 1, data.size() - 1);
}
#Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
}
}
private static void createAndShowGUI(final Container container, final String title) {
//Create and set up the window.
JFrame frame = new JFrame(title);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationByPlatform(Boolean.TRUE);
frame.add(container);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String args[]) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI(new JTableTest().panel, "Test");
}
});
}
}

I accomplished this by enabling the editing and then making the component responsible for the edition ignore any changes. For this I created a TableCellEditor and intercepted the key types to the JTextField, the component used for editing.
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
public class TableCellSelectionTest
{
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable() {
public void run()
{
new TableCellSelectionTest().initUI();
}
});
}
public void initUI()
{
JFrame frame = new JFrame();
int N = 5;
int M = 3;
Object[][] data = new Object[N][M];
for (int i = 0; i < N; ++i)
{
for (int j = 0; j < M; ++j)
{
data[i][j] = "This is the cell (" + i + ", " + j +")";
}
}
String[] columnNames = { "Column 1", "Column 2", "Column 3" };
DefaultTableModel model = new DefaultTableModel(data, columnNames);
final MyTableCellEditor editor = new MyTableCellEditor();
JTable table = new JTable(model) {
#Override
public TableCellEditor getCellEditor(int row, int column)
{
return editor;
}
};
frame.add(new JScrollPane(table), BorderLayout.CENTER);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
class MyTableCellEditor extends AbstractCellEditor implements
TableCellEditor
{
Object _value;
#Override
public Object getCellEditorValue()
{
return _value;
}
#Override
public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column)
{
_value = value;
JTextField textField = new JTextField(_value.toString());
textField.addKeyListener(new KeyAdapter()
{
public void keyTyped(KeyEvent e) {
e.consume(); //ignores the key
}
#Override
public void keyPressed(KeyEvent e)
{
e.consume();
}});
textField.setEditable(false); //this is functionally irrelevent, makes slight visual changes
return textField;
}
}
}

I tried both the answers here... but one problem at least is that you can tell when you've entered the "editing" mode.
This might be of interest... uses a combination of Editor magic and cheeky rendering to make it look like no editing is going on: editor's click-count-to-start is set to 1, and the component (JTextPane) delivered by the editor's method does setEditable( false ).
If this tickles your fancy, you might be interested at looking at my implementation of a JTable which adjusts (perfectly, harnessing the JTextPane's powerful wrapping power) the row height to the text, for individual rows, including when you change the columns: How to wrap lines in a jtable cell?
public class SelectableNonEditableTableTest {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JFrame main_frame = new JFrame();
main_frame.setPreferredSize(new Dimension(1200, 300));
main_frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ArrayList<String> nonsense = new ArrayList<String>(
Arrays.asList(
"Lorem ipsum dolor sit amet, sed dolore vivendum ut",
"pri an soleat causae doctus.",
"Alienum abhorreant mea ea",
"cum malorum diceret ei. Pri oratio invidunt consequat ne.",
"Ius tritani detraxit scribentur et",
"has detraxit legendos intellegat at",
"quo oporteat constituam ex"));
JTable example_table = new JTable(10, 4);
example_table.setRowHeight( example_table.getRowHeight() * 2 );
DefaultCellEditor cell_editor = new SelectableNonEditableCellEditor(
new JTextField());
cell_editor.setClickCountToStart(1);
example_table.setDefaultEditor(Object.class, cell_editor);
TableCellRenderer renderer = new SelectableNonEditableTableRenderer();
example_table.setDefaultRenderer(Object.class, renderer);
for (int i = 0; i < 10; i++) {
example_table.setValueAt(nonsense.get(i % nonsense.size()),
i, i % 4);
}
main_frame.getContentPane().add(new JScrollPane(example_table));
main_frame.pack();
main_frame.setVisible(true);
}
});
}
}
class SelectableNonEditableCellEditor extends DefaultCellEditor {
public SelectableNonEditableCellEditor(JTextField textField) {
super(textField);
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int col) {
Component comp = super.getTableCellEditorComponent(table, value,
isSelected, row, col);
if (value instanceof java.lang.String) {
DefaultStyledDocument sty_doc = new DefaultStyledDocument();
try {
sty_doc.insertString(0, (String) value, null);
} catch (BadLocationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JTextPane jtp_comp = new JTextPane(sty_doc);
jtp_comp.setEditable(false);
return jtp_comp;
}
return comp;
}
}
class SelectableNonEditableTableRenderer extends JTextPane implements
TableCellRenderer {
#Override
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (value instanceof DefaultStyledDocument) {
setDocument((DefaultStyledDocument) value);
} else {
setText((String) value);
}
return this;
}
}

Maybe you can implement your own TableCellRenderer that extends JTextField in your table.

JTable with titled rows and columns

How can I have a JTable with both columns & rows have title?
something like this:
+------+------+------+------+
|/\/\/\| col1 | col2 | col3 |
+------+------+------+------+
| row1 | | | |
+------+------+------+------+
| row2 | | | |
+------+------+------+------+
| row3 | | | |
+------+------+------+------+
Thanks

I think that you searching RowTable
import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class JTableRowHeader {
private JFrame frame = new JFrame("JTable RowHeader");
private JScrollPane scrollPane;
private JTable table;
private DefaultTableModel model;
private TableRowSorter<TableModel> sorter;
private JTable headerTable;
public JTableRowHeader() {
table = new JTable(4, 4);
for (int i = 0; i < table.getRowCount(); i++) {
table.setValueAt(i, i, 0);
}
sorter = new TableRowSorter<TableModel>(table.getModel());
table.setRowSorter(sorter);
model = new DefaultTableModel() {
private static final long serialVersionUID = 1L;
#Override
public int getColumnCount() {
return 1;
}
#Override
public boolean isCellEditable(int row, int col) {
return false;
}
#Override
public int getRowCount() {
return table.getRowCount();
}
#Override
public Class<?> getColumnClass(int colNum) {
switch (colNum) {
case 0:
return String.class;
default:
return super.getColumnClass(colNum);
}
}
};
headerTable = new JTable(model);
for (int i = 0; i < table.getRowCount(); i++) {
headerTable.setValueAt("Row " + (i + 1), i, 0);
}
headerTable.setShowGrid(false);
headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
headerTable.setPreferredScrollableViewportSize(new Dimension(50, 0));
headerTable.getColumnModel().getColumn(0).setPreferredWidth(50);
headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() {
#Override
public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
boolean selected = table.getSelectionModel().isSelectedIndex(row);
Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2);
((JLabel) component).setHorizontalAlignment(SwingConstants.CENTER);
if (selected) {
component.setFont(component.getFont().deriveFont(Font.BOLD));
component.setForeground(Color.red);
} else {
component.setFont(component.getFont().deriveFont(Font.PLAIN));
}
return component;
}
});
table.getRowSorter().addRowSorterListener(new RowSorterListener() {
#Override
public void sorterChanged(RowSorterEvent e) {
model.fireTableDataChanged();
}
});
table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent e) {
model.fireTableRowsUpdated(0, model.getRowCount() - 1);
}
});
scrollPane = new JScrollPane(table);
scrollPane.setRowHeaderView(headerTable);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.add(scrollPane);
frame.add(new JButton(new AbstractAction("Toggle filter") {
private static final long serialVersionUID = 1L;
private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {
#Override
public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
return ((Number) entry.getValue(0)).intValue() % 2 == 0;
}
};
#Override
public void actionPerformed(ActionEvent e) {
if (sorter.getRowFilter() != null) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(filter);
}
}
}), BorderLayout.SOUTH);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
public static void main(String[] args) {
try {// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if (info.getName().equals("Nimbus")) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e) {
//e.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JTableRowHeader TestTableRowHeader = new JTableRowHeader();
}
});
}
}

Row header and table value are desynchronized in solution from mKorbel. The table displays Row 1 and Row 2 instead of Row 1 and Row 3 when filtered.
Here is a solution based on his example. It duplicates row header into a new column in the table, hide this column and copy values to the other one when filtered.
It works and it's ugly, we need a better solution from someone :)
import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class JTableRowHeader {
private JFrame frame = new JFrame("JTable RowHeader");
private JScrollPane scrollPane;
private JTable table;
private DefaultTableModel model;
private TableRowSorter<TableModel> sorter;
private JTable headerTable;
public JTableRowHeader() {
table = new JTable(4, 5);
for (int i = 0; i < table.getRowCount(); i++) {
table.setValueAt("Row " + (i + 1), i, 0);
table.setValueAt(i, i, 1);
}
sorter = new TableRowSorter<TableModel>(table.getModel());
table.setRowSorter(sorter);
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
model = new DefaultTableModel() {
private static final long serialVersionUID = 1L;
#Override
public int getColumnCount() {
return 1;
}
#Override
public boolean isCellEditable(int row, int col) {
return false;
}
#Override
public int getRowCount() {
return table.getRowCount();
}
#Override
public Class<?> getColumnClass(int colNum) {
switch (colNum) {
case 0:
return String.class;
default:
return super.getColumnClass(colNum);
}
}
};
headerTable = new JTable(model);
for (int i = 0; i < table.getRowCount(); i++) {
headerTable.setValueAt("Row " + (i + 1), i, 0);
}
headerTable.setShowGrid(false);
headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
headerTable.setPreferredScrollableViewportSize(new Dimension(50, 0));
headerTable.getColumnModel().getColumn(0).setPreferredWidth(50);
headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() {
#Override
public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
boolean selected = table.getSelectionModel().isSelectedIndex(row);
Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2);
((JLabel) component).setHorizontalAlignment(SwingConstants.CENTER);
if (selected) {
component.setFont(component.getFont().deriveFont(Font.BOLD));
component.setForeground(Color.red);
} else {
component.setFont(component.getFont().deriveFont(Font.PLAIN));
}
return component;
}
});
table.getRowSorter().addRowSorterListener(new RowSorterListener() {
#Override
public void sorterChanged(RowSorterEvent e) {
model.fireTableDataChanged();
for (int i = 0; i < table.getRowCount(); i++) {
headerTable.setValueAt(table.getValueAt(i, 0), i, 0);
}
}
});
table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent e) {
model.fireTableRowsUpdated(0, model.getRowCount() - 1);
}
});
TableColumnModel columnModel = table.getColumnModel();
TableColumn column = columnModel.getColumn(0);
column.setMinWidth(0);
column.setMaxWidth(0);
column.setPreferredWidth(0);
AdjusterTableColumn columnAdjuster = new AdjusterTableColumn(table);
columnAdjuster.adjustColumns();
scrollPane = new JScrollPane(table);
scrollPane.setRowHeaderView(headerTable);
table.setPreferredScrollableViewportSize(table.getPreferredSize());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.add(scrollPane);
frame.add(new JButton(new AbstractAction("Toggle filter") {
private static final long serialVersionUID = 1L;
private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {
#Override
public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
return ((Number) entry.getValue(1)).intValue() % 2 == 0;
}
};
#Override
public void actionPerformed(ActionEvent e) {
if (sorter.getRowFilter() != null) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(filter);
}
}
}), BorderLayout.SOUTH);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
public static void main(String[] args) {
try {// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if (info.getName().equals("Nimbus")) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e) {
//e.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
JTableRowHeader TestTableRowHeader = new JTableRowHeader();
}
});
}
}

How to gray-out non-editable cell in jtable?

I want to gray non-editable cell in JTable.
I'm using such TableCellRenderer:
TableColumn column = table.getColumnModel().getColumn(0);
column.setCellRenderer(new GrayableCheckboxCellRenderer());
public class GrayableCheckboxCellRenderer extends JCheckBox implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int vRowIndex, int vColIndex) {
boolean editable = isEditable(vRowIndex, vColIndex);
setBackground(editable ? UIManager.getColor("Label.background") : Color.LIGHT_GRAY);
setSelected((Boolean) value);
if (isSelected) {
// TODO: cell (and perhaps other cells) are selected, need to highlight it
}
return this;
}
// perfomance
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) {}
public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) {}
public void revalidate() {}
public void validate() {}
}
This works but with one annoying artefact:
Initially "checkbox" is "left-arranged", when I press left mouse button it moves to "center-arranged" and when I release mouse button it moves back to "left-arranged".
How to avoid such annoying artefact and probably there are better simpler solution for my problem?

Return an instance of GrayableCheckboxCellRenderer in a TableCellEditor.
Addendum: Aesthetically, you may want to condition the renderer's and editor's colors based on the defaults provided by the current Look & Feel, for example:
Color hilite = UIManager.getColor("Table.selectionBackground");

simpliest way by using preparedRenderer
import java.awt.*;
import java.util.Random;
import java.util.Vector;
import javax.swing.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;
public class Forum {
private JFrame frame = new JFrame("Frame");
private JPanel fatherCenter = new JPanel();
private JScrollPane tableScroll = new JScrollPane();
private myTableModel tableModel;
private JTable dialogTable;
private ListSelectionModel lsDialog;
private void addComponentsToPane(Container pane) {
tableModel = new myTableModel();
dialogTable = new JTable(tableModel) {
private static final long serialVersionUID = 1L;
#Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component comp = super.prepareRenderer(renderer, row, column);
JComponent jc = (JComponent) comp;//for Custom JComponent
if (!isRowSelected(row)) {
int modelRow = convertRowIndexToModel(row);
boolean type = (Boolean) getModel().getValueAt(modelRow, 2);
boolean type1 = (Boolean) getModel().getValueAt(modelRow, 3);
boolean type2 = (Boolean) getModel().isCellEditable(row, column);
comp.setForeground(Color.black);
if ((type) && (!type1)) {
comp.setBackground(Color.yellow);
} else if ((!type) && (type1)) {
comp.setBackground(Color.orange);
} else if ((!type) || (!type1)) {
comp.setBackground(Color.red);
//} else if ((!type2)) {
//comp.setForeground(Color.red);
//comp.setBackground(Color.magenta);
} else {
comp.setBackground(row % 2 == 0 ? getBackground() : getBackground().darker());
}
dialogTable.convertRowIndexToView(0);
} else {
comp.setForeground(Color.blue);
comp.setBackground(Color.lightGray);
}
if (!isCellEditable(row, column)) {
comp.setForeground(Color.red);
comp.setBackground(Color.magenta);
}
return comp;
}
};
tableScroll = new JScrollPane(dialogTable, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
tableScroll.setBorder(null);
dialogTable.getTableHeader().setReorderingAllowed(false);
dialogTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
lsDialog = dialogTable.getSelectionModel();
dialogTable.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);
dialogTable.setRowHeight(20);
dialogTable.setRowMargin(2);
fatherCenter = new JPanel();
fatherCenter.setLayout(new BorderLayout(10, 10));
fatherCenter.add(tableScroll, BorderLayout.CENTER);
pane.add(fatherCenter);
}
private void addData() {
Runnable doRun1 = new Runnable() {
#Override
public void run() {
tableModel.resetTable();
Vector<String> tbl = new Vector<String>();
Vector<Object> tbl1 = new Vector<Object>();
Random rnd = new Random();
tbl.add("Integer");
tbl.add("Double");
tbl.add("Boolean");
tbl.add("Boolean");
tbl.add("String");
tableModel.setColumnNames(tbl);
for (int row = 0; row < 30; row++) {
tbl1 = null;
tbl1 = new Vector<Object>();
tbl1.addElement(row + 1);
tbl1.addElement(rnd.nextInt(25) + 3.14);
tbl1.addElement((row % 3 == 0) ? false : true);
tbl1.addElement((row % 5 == 0) ? false : true);
if (row % 7 == 0) {
tbl1.add(("Canc"));
} else if (row % 6 == 0) {
tbl1.add(("Del"));
} else {
tbl1.add(("New"));
}
tableModel.addRow(tbl1);
}
addTableListener();
}
};
SwingUtilities.invokeLater(doRun1);
}
private void addTableListener() {
tableModel.addTableModelListener(new TableModelListener() {
#Override
public void tableChanged(TableModelEvent tme) {
if (tme.getType() == TableModelEvent.UPDATE) {
System.out.println("Cell " + tme.getFirstRow() + ", "
+ tme.getColumn() + " changed. The new value: "
+ tableModel.getValueAt(tme.getFirstRow(),
tme.getColumn()));
}
}
});
}
private void createAndShowGUI() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout(10, 10));
addComponentsToPane(frame.getContentPane());
addData();
frame.setLocation(150, 150);
frame.setPreferredSize(new Dimension(400, 646));
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
Forum osFrame = new Forum();
}
public Forum() {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI();
}
});
}
private class myTableModel extends AbstractTableModel {
private static final long serialVersionUID = 1L;
private Vector<Vector<Object>> data;
private Vector<String> colNames;
private boolean[] _columnsVisible = {true, true, true, true, true};
myTableModel() {
this.colNames = new Vector<String>();
this.data = new Vector<Vector<Object>>();
}
myTableModel(Vector<String> colnames) {
this.colNames = colnames;
this.data = new Vector<Vector<Object>>();
}
public void resetTable() {
this.colNames.removeAllElements();
this.data.removeAllElements();
}
public void setColumnNames(Vector<String> colNames) {
this.colNames = colNames;
this.fireTableStructureChanged();
}
public void addRow(Vector<Object> data) {
this.data.add(data);
this.fireTableDataChanged();
this.fireTableStructureChanged();
}
public void removeRowAt(int row) {
this.data.removeElementAt(row);
this.fireTableDataChanged();
}
#Override
public int getColumnCount() {
return this.colNames.size();
}
#Override
public Class<?> getColumnClass(int colNum) {
switch (colNum) {
case 0:
return Integer.class;
case 1:
return Double.class;
case 2:
return Boolean.class;
case 3:
return Boolean.class;
default:
return String.class;
}
}
#Override
public boolean isCellEditable(int row, int colNum) {
switch (colNum) {
case 2:
return false;
default:
return true;
}
}
#Override
public String getColumnName(int colNum) {
return this.colNames.get(colNum);
}
#Override
public int getRowCount() {
return this.data.size();
}
#Override
public Object getValueAt(int row, int col) {
Vector<Object> value = this.data.get(row);
return value.get(col);
}
#Override
public void setValueAt(Object newVal, int row, int col) {
Vector<Object> aRow = data.elementAt(row);
aRow.remove(col);
aRow.insertElementAt(newVal, col);
fireTableCellUpdated(row, col);
}
public void setColumnVisible(int index, boolean visible) {
this._columnsVisible[index] = visible;
this.fireTableStructureChanged();
}
}
}

Just explicitly setting the alignment in the 'getTableCellRendererComponent()' method solves the problem. Add the below line before returning from the method.
setHorizontalAlignment(SwingConstants.CENTER);

How to auto select the last inserted row in JTable?

Since JTable could be sorted.
How do I set it auto select the last inserted row whenever a row is inserted?
Thanks

your TableModel can retun number of rows, and new/added could be last by using convertRowIndexToView you can get row in TableView, then pass to the changeSelection
public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)
EDIT: example (for enjoy harcoded numbersOfRows - 3 instead of correct numbersOfRows - 1):
import java.awt.*;
import java.awt.event.ActionEvent;
import javax.swing.*;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.event.*;
import javax.swing.table.*;
public class TestTableRowTable {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if (info.getName().equals("Nimbus")) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception e1) {
e1.printStackTrace();
}
final JTable table = new JTable(10, 6);
for (int i = 0; i < table.getRowCount(); i++) {
table.setValueAt(i, i, 0);
}
final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(table.getModel());
table.setRowSorter(sorter);
final AbstractTableModel model = new AbstractTableModel() {
private static final long serialVersionUID = 1L;
#Override
public int getColumnCount() {
return 1;
}
#Override
public Object getValueAt(int row, int column) {
return table.convertRowIndexToModel(row);
}
#Override
public int getRowCount() {
return table.getRowCount();
}
};
JTable headerTable = new JTable(model);
headerTable.setShowGrid(false);
headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
headerTable.setPreferredScrollableViewportSize(new Dimension(30, 0));
headerTable.getColumnModel().getColumn(0).setPreferredWidth(30);
headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() {
#Override
public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
boolean selected = table.getSelectionModel().isSelectedIndex(row);
Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2);
((JLabel) component).setHorizontalAlignment(JLabel.CENTER);
if (selected) {
component.setFont(component.getFont().deriveFont(Font.BOLD));
} else {
component.setFont(component.getFont().deriveFont(Font.PLAIN));
}
return component;
}
});
table.getRowSorter().addRowSorterListener(
new RowSorterListener() {
#Override
public void sorterChanged(RowSorterEvent e) {
model.fireTableDataChanged();
}
});
table.getSelectionModel().addListSelectionListener(
new ListSelectionListener() {
#Override
public void valueChanged(ListSelectionEvent e) {
model.fireTableRowsUpdated(0, model.getRowCount() - 1);
}
});
JScrollPane pane = new JScrollPane(table);
pane.setRowHeaderView(headerTable);
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(pane);
frame.getContentPane().add(new JButton(new AbstractAction("Toggle filter") {
private static final long serialVersionUID = 1L;
private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {
#Override
public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
return ((Number) entry.getValue(0)).intValue() % 2 == 0;
//return ((String) entry.getValue(0)).length()>0 ;
//return ((Date) entry.getValue(0)).getTime()< ;
}
};
#Override
public void actionPerformed(ActionEvent e) {
if (sorter.getRowFilter() != null) {
sorter.setRowFilter(null);
TableModel tblModel = table.getModel();
int numbersOfRows = 0;
numbersOfRows = tblModel.getRowCount();
int lastRow = 0;
lastRow = table.convertRowIndexToView(numbersOfRows - 3);
table.changeSelection(lastRow, 0, false, false);
} else {
sorter.setRowFilter(filter);
}
}
}), BorderLayout.PAGE_END);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
private TestTableRowTable() {
}
}

It is hard to answer,because you haven't provided any code, but, if you use some model of JTable you can write some adapter for method insert, I mean for public void insertRow(int row, Vector rowData). Here is present number of row, using this number you can select row. Do you know how to select row ?