JTable column selection

Hi,
I need to select a particular column in a jtable by right clicking the mouse.Any help ?

play with these methods
Table.setColumnSelectionAllowed(true);
      Table.setRowSelectionAllowed(true);

Similar Messages

  • How to catch selected text in JTable Column

    Hi there,
    I am learning JTable. Need help for How to get the selected text from the JTable Column which is set to be editable.
    for example in JTextFiled you have method on getSelectedText(), is there any method for tracking the selected text.
    Thanks in advance
    Minal

    Here's an example of the model I used in my JTable. Not the "getValueAt" method & "getRecordAt" method. You will have to have a Record object - but it only contains the attributes of an inserted record (with appropriate getters & setters). Hope this helps.
    public class FileModel5 extends AbstractTableModel
    public boolean isEditable = false;
    protected static int NUM_COLUMNS = 3;
    // initialize number of rows to start out with ...
    protected static int START_NUM_ROWS = 0;
    protected int nextEmptyRow = 0;
    protected int numRows = 0;
    static final public String file = "File";
    static final public String mailName = "Mail Id";
    static final public String postName = "Post Office Id";
    static final public String columnNames[] = {"File", "Mail Id", "Post Office Id"};
    // List of data
    protected Vector data = null;
    public FileModel5()
    data = new Vector();
    public boolean isCellEditable(int rowIndex, int columnIndex)
    // The 2nd & 3rd column or Value field is editable
    if(isEditable)
    if(columnIndex > 0)
    return true;
    return false;
    * JTable uses this method to determine the default renderer/
    * editor for each cell. If we didn't implement this method,
    * then the last column would contain text ("true"/"false"),
    * rather than a check box.
    public Class getColumnClass(int c)
    return getValueAt(0, c).getClass();
    * Retrieves number of columns
    public synchronized int getColumnCount()
    return NUM_COLUMNS;
    * Get a column name
    public String getColumnName(int col)
    return columnNames[col];
    * Retrieves number of records
    public synchronized int getRowCount()
    if (numRows < START_NUM_ROWS)
    return START_NUM_ROWS;
    else
    return numRows;
    * Returns cell information of a record at location row,column
    public synchronized Object getValueAt(int row, int column)
    try
    FileRecord5 p = (FileRecord5)data.elementAt(row);
    switch (column)
    case 0:
    return (String)p.file;
    case 1:
    return (String)p.mailName;
    case 2:
    return (String)p.postName;
    catch (Exception e)
    return "";
    public void setValueAt(Object aValue, int row, int column)
    FileRecord5 arow = (FileRecord5)data.elementAt(row);
    arow.setElementAt((String)aValue, column);
    fireTableCellUpdated(row, column);
    * Returns information of an entire record at location row
    public synchronized FileRecord5 getRecordAt(int row) throws Exception
    try
    return (FileRecord5)data.elementAt(row);
    catch (Exception e)
    throw new Exception("Record not found");
    * Used to add or update a record
    * @param tableRecord
    public synchronized void updateRecord(FileRecord5 tableRecord)
    String file = tableRecord.file;
    FileRecord5 p = null;
    int index = -1;
    boolean found = false;
    boolean addedRow = false;
    int i = 0;
    while (!found && (i < nextEmptyRow))
    p = (FileRecord5)data.elementAt(i);
    if (p.file.equals(file))
    found = true;
    index = i;
    } else
    i++;
    if (found)
    { //update
    data.setElementAt(tableRecord, index);
    else
    if (numRows <= nextEmptyRow)
    //add a row
    numRows++;
    addedRow = true;
    index = nextEmptyRow;
    data.addElement(tableRecord);
    //Notify listeners that the data changed.
    if (addedRow)
    nextEmptyRow++;
    fireTableRowsInserted(index, index);
    else
    fireTableRowsUpdated(index, index);
    * Used to delete a record
    public synchronized void deleteRecord(String file)
    FileRecord5 p = null;
    int index = -1;
    boolean found = false;
    int i = 0;
    while (!found && (i < nextEmptyRow))
    p = (FileRecord5)data.elementAt(i);
    if (p.file.equals(file))
    found = true;
    index = i;
    } else
    i++;
    if (found)
    data.removeElementAt(i);
    nextEmptyRow--;
    numRows--;
    fireTableRowsDeleted(START_NUM_ROWS, numRows);
    * Clears all records
    public synchronized void clear()
    int oldNumRows = numRows;
    numRows = START_NUM_ROWS;
    data.removeAllElements();
    nextEmptyRow = 0;
    if (oldNumRows > START_NUM_ROWS)
    fireTableRowsDeleted(START_NUM_ROWS, oldNumRows - 1);
    fireTableRowsUpdated(0, START_NUM_ROWS - 1);
    * Loads the values into the combo box within the table for mail id
    public void setUpMailColumn(JTable mapTable, ArrayList mailList)
    TableColumn col = mapTable.getColumnModel().getColumn(1);
    javax.swing.JComboBox comboMail = new javax.swing.JComboBox();
    int s = mailList.size();
    for(int i=0; i<s; i++)
    comboMail.addItem(mailList.get(i));
    col.setCellEditor(new DefaultCellEditor(comboMail));
    //Set up tool tips.
    DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
    renderer.setToolTipText("Click for mail Id list");
    col.setCellRenderer(renderer);
    //Set up tool tip for the mailName column header.
    TableCellRenderer headerRenderer = col.getHeaderRenderer();
    if (headerRenderer instanceof DefaultTableCellRenderer)
    ((DefaultTableCellRenderer)headerRenderer).setToolTipText(
    "Click the Mail Id to see a list of choices");
    * Loads the values into the combo box within the table for post office id
    public void setUpPostColumn(JTable mapTable, ArrayList postList)
    TableColumn col = mapTable.getColumnModel().getColumn(2);
    javax.swing.JComboBox combo = new javax.swing.JComboBox();
    int s = postList.size();
    for(int i=0; i<s; i++)
    combo.addItem(postList.get(i));
    col.setCellEditor(new DefaultCellEditor(combo));
    //Set up tool tips.
    DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
    renderer.setToolTipText("Click for post office Id list");
    col.setCellRenderer(renderer);
    //Set up tool tip for the mailName column header.
    TableCellRenderer headerRenderer = col.getHeaderRenderer();
    if (headerRenderer instanceof DefaultTableCellRenderer)
    ((DefaultTableCellRenderer)headerRenderer).setToolTipText(
    "Click the Post Office Id to see a list of choices");
    }

  • Custom JTable column (JCheckBox) not included in row selection.

    I am trying to use JCheckBox (for display only data) as one of my JTable columns. I have written custom cell renderer for the same. Every thing is working fine except that when I select a row, the new custom JCheckBox column is not included in selection. Here is the code that I am using.
        protected class CheckBoxColumnRenderer extends DefaultTableCellRenderer {
            JCheckBox ckb = new JCheckBox();
            public Component getTableCellRendererComponent(JTable table, Object value,
                        boolean isSelected, boolean hasFocus, int row, int column) {
                if (value instanceof Boolean) { // Boolean
                  ckb.setSelected(((Boolean) value));
                  ckb.setHorizontalAlignment(JLabel.CENTER);
                  ckb.setBackground(super.getBackground());
                  if (isSelected || hasFocus) {
                      ckb.setBackground(table.getSelectionBackground());
                return ckb;
        }How can I include the custom cell in the row selection.
    regards,
    nirvan.

    they have lots of dependencies and it is not always easy to strip out an SSCCE without a considerable effort.Exactly. And is the cause of the problem the dependencies or something else. The only way to know for sure is to strip out the code and simplify the problem, that way you truly understand what the problem is.
    The majority of time this can be done with minimal effort as in this case.
    Some times we are sure that the problem is with certain part of the code Is the problem the code or the way the code is invoked? How do we know the TableModel is created properly or that the column class is overwritten correctly when we can't see it?
    someone having a third look at it may actually find the enhancement required with ease.Exactly, but we need to see the big picture.
    So are you sure that I should post an SSCCE with every possible question where coding is involved ?In the majority of cases a SSCCE is easily created in 5-10 minutes, so if you want the fastest help then yes.
    Just twice this past week I was ready to ask a question on the forum and was preparing a SSCCE to post and sure enough both times the creation of the SSCCE caused me to look at the problem differently and I solved it. I would much rather solve a problem on my own then post a question and wait for hours (days) hoping someone else knows the answer.

  • Set background color to selected jtable columns cell

    I am clicking on jtables column.I want to select any column and that column (only selected cell of column)should get displayed with specific background color.
    plz help

    You can write your own tablemodel,
    i.e. use DefaultTableModel or implement AbstractTableModel.
    Good luck!

  • F2 key not working with custom JTable Column

    I have a custom JTable Column (which is a JPanel with a JTextfield and JButton). Everything works as expected, except when the user presses "F2" to start editing the custom column cell. When the user presses F2, the custom cell goes into editing mode, but I am unable to type anything in it.
    Below is the SSCCE.
    Steps to Reproduce problem:
    1) Run the Program
    2) Select any cell in first Column.
    3) Press "F2" and try to type into the cell. Can't type anything.
    package com.ns;
    import java.awt.BorderLayout;
    import java.awt.Component;
    import java.awt.Dimension;
    import java.awt.Point;
    import java.awt.Toolkit;
    import java.awt.event.ActionEvent;
    import java.awt.event.KeyEvent;
    import java.util.EventObject;
    import javax.swing.DefaultCellEditor;
    import javax.swing.JButton;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.JTextField;
    import javax.swing.SwingUtilities;
    import javax.swing.UIManager;
    import javax.swing.WindowConstants;
    import javax.swing.table.DefaultTableModel;
    import javax.swing.table.TableCellRenderer;
    public class TextButtonCellFrame extends javax.swing.JFrame {
        // Variables declaration - do not modify                    
        private JTextField inputText;
        private JScrollPane jScrollPane1;
        private JPanel testPanel;
        private JTable testTable;
        // End of variables declaration                  
        public TextButtonCellFrame() {
            initComponents();
        @SuppressWarnings("unchecked")
        // <editor-fold defaultstate="collapsed" desc="Generated Code">                         
        private void initComponents() {
            testPanel = new JPanel();
            jScrollPane1 = new JScrollPane();
            testTable = new JTable();
            inputText = new JTextField();
            setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
            testTable.setModel(new DefaultTableModel(
                new Object [][] {
                    {null, null, null, null},
                    {null, null, null, null},
                    {null, null, null, null},
                    {null, null, null, null}
                new String [] {
                    "Title 1", "Title 2", "Title 3", "Title 4"
            testTable.setCellSelectionEnabled(true);
            testTable.setRowHeight(52);
            testTable.setSurrendersFocusOnKeystroke(true);
            testTable.getColumnModel().getColumn(0).setCellRenderer(new MyTableCellRenderer());
            testTable.getColumnModel().getColumn(0).setCellEditor(new MyTableCellEditor(new JTextField()));
            testTable.getColumnModel().getColumn(0).setPreferredWidth(200);
            jScrollPane1.setViewportView(testTable);
            testPanel.add(jScrollPane1);
            inputText.setPreferredSize(new Dimension(50, 20));
            testPanel.add(inputText);
            getContentPane().add(testPanel, BorderLayout.CENTER);
            Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
            setBounds((screenSize.width-576)/2, (screenSize.height-417)/2, 576, 417);
        }// </editor-fold>                       
        public static void main(String args[]) {
            java.awt.EventQueue.invokeLater(new Runnable() {
                public void run() {
                    new TextButtonCellFrame().setVisible(true);
        public class MyTableCellRenderer extends JPanel implements TableCellRenderer {
            Point point;
            JButton button1 = new JButton("Test 1");
            JTextField txtField = new JTextField();
            public MyTableCellRenderer() {
                setLayout(new BorderLayout());
                this.add(button1, BorderLayout.EAST);
                this.add(txtField,BorderLayout.CENTER);
            public Component getTableCellRendererComponent(JTable table, Object value,
                    boolean isSelected, boolean hasFocus, int rowIndex, int vColIndex) {
                if (isSelected) {
                    txtField.setBackground(testTable.getSelectionBackground());
                    txtField.setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
                else {
                    txtField.setBackground(testTable.getBackground());
                    txtField.setBorder(null);
                return this;
        public class MyTableCellEditor extends DefaultCellEditor {
            JPanel panel = new JPanel();
            JButton button1 = new JButton ("Test 1");
            JTextField txtField;
            MyTableCellEditor(JTextField txtField) {
                super (txtField);
                this.txtField = txtField;
                panel.setLayout(new BorderLayout());
                panel.add(button1, BorderLayout.EAST);
                panel.add(txtField,BorderLayout.CENTER);
            public void actionPerformed(ActionEvent e) {
                if (e.getSource() == button1)
                    JOptionPane.showMessageDialog(null, "Action One Successful");
            public Component getTableCellEditorComponent(JTable table, Object value,
                                        boolean isSelected, int row, int column) {
                return panel;
           public boolean isCellEditable(final EventObject anEvent) {
              if (anEvent instanceof KeyEvent) {
                 final KeyEvent keyEvent = (KeyEvent) anEvent;
                 SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                       if (!Character.isIdentifierIgnorable(keyEvent.getKeyChar())) {
                          txtField.setText(txtField.getText() + keyEvent.getKeyChar());
                       txtField.setCaretPosition(txtField.getText().length());
                       txtField.requestFocusInWindow();
                return super.isCellEditable(anEvent);
    }The code for isCellEditable(final EventObject anEvent) which is needed to edit the cell using keyboard was provided by DarrylBurke here
    regards,
    nirvan.

    The F2 key when pressed generates an action event (either JTable generates it or some other component). I am not sure how to handle the action event in the isCellEditable() method. Also, F(X) range of keys other than F2 dump some junk character in the JTextfield when pressed. I am now stuck at this point and don't know how handle F(X) range of keys.
    regards,
    nirvan.

  • How to set special rows in jtable not selectable

    Hello programmers,
    anybody knows how to set special rows(p.E. row 0) in jtable not selectable.
    in advance thanks for your answers

    table = new JTable(...)
         public void changeSelection(int row, int column, boolean toggle, boolean extend)
              if (row == 0)
                   return;
              else
                   super.changeSelection(row, column, toggle, extend);
    };

  • Change of Jtable feature select in 1.5?

    I have a JTable Object, with 12 columns and 32 rows.
    when the user want to populate the first eight rows there is no problem, they begin ant the rown 0 column 0, But when the user want to capture only from the 9 to 16 row, they select those range, but until the version 1.4.2, the cursos was positioned in the first row&colum selected.
    But after jdk 1.5.x, the cursor focus focus is in the last row&column selected..
    How can I make that the first position select get the focus in the JTable?
    In other worksheet have this feature, fouc son the first colun&row selected.
    why Java change it?
    Please help me out.

    The problem is not how to select an interval.
    The problem is the position of the cursor when finalizing the selection of an interval.
    In the versions prior at the 1.5 was positioned at the beginning of the selection and not to end.
    But since version 1.5, the focus on the table have the last position selected.
    Look the excel feature or another worksheet, and the focus always is the first cell selected.
    Thnaks

  • Help with JTable column width

    Hi,
    I'm trying to resize my JTable columns with this code, but it's not working. What I am doing wrong?
    for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) {
    TableColumn tc = table.getColumnModel().getColumn(i);
    int width = (i == 0)? 10 : table.getWidth()/2 - 10; // three columns
    tc.setPreferredWidth(width);
    Thanks,
    Andr�

    Now my problem is that using either of these methods
    is they don't carry the user's selected column width
    through updates.It sounds like the change event your table model is firing is causing the entire table to be rebuilt. I would guess that you are firing fireTableStructureChanged() which would cause the entire table to be rebuilt (columns, cell values, etc.) Just fire a change event for the minimum necessary. If you can't identify what data in your table has changed (to fire cell or row change events), but the structure (columns) of the table hasn't changed, just fire fireTableDataChanged(). This will cause the cells to be redrawn with the new values, but shouldn't cause the columns to be rebuilt and resized.

  • Table Sorting based on Column Selection

    Dear All,
    I am using an AbstractTableModel. I would like to implement the sorting based on Column selection. Could anyone help me in this please.
    Thanks in advance,
    Regards
    Irfaan

    check this
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.UIManager;
    import javax.swing.table.AbstractTableModel;
    import javax.swing.table.TableCellRenderer;
    import javax.swing.table.TableColumnModel;
    import java.awt.Component;
    import java.awt.GridLayout;
    import java.awt.Insets;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    import java.util.Hashtable;
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        private boolean             DEBUG       = false;
        private Object[]            columnNames = { "First Name", "Last Name", "Sport", "# of Years",
                                                    "Vegetarian"};
        private Object[][]          data        = { { "Mary", "Campione", "Snowboarding", 1, 2 },
                { "Alison", "Huml", "Rowing", 3, 4 }, { "Kathy", "Walrath", "Knitting", 5, 9 },
                { "Sharon", "Zakhour", "Speed reading", 6, 10 }, { "Philip", "Milne", "Pool", 7, 11 },
                { "Isaac", "Rabinovitch", "Nitpicking", 8, 12 }, };
        private SortFilterModel     m_modSortFilterModel;
        private TableColumnModel    m_modColumnModel;
        private TableHeaderRenderer m_btnSorterRenderer;
        protected boolean           m_bAbCOC    = true;
        JTable                      table       = new JTable();
        public TableSorter()
            super(new GridLayout(1, 0));
            m_modSortFilterModel = new SortFilterModel();
            m_modSortFilterModel.addMouseListener(table);
            table.setModel(m_modSortFilterModel);
            m_btnSorterRenderer = new TableHeaderRenderer();
            m_modColumnModel = table.getColumnModel();
            for (int i = 0; i < columnNames.length; i++)
                m_modColumnModel.getColumn(i).setHeaderRenderer(m_btnSorterRenderer);
            JScrollPane scrollPane = new JScrollPane(table);
            add(scrollPane);
        private class SortFilterModel extends AbstractTableModel
            int[]           indexes;
            ATSTableSorter  sorter;
            public String[] tableHeadersArray;
            boolean         isAscent = true;
            public void addMouseListener(final JTable table)
                table.getTableHeader().addMouseListener(new MouseAdapter()
                    public void mouseClicked(MouseEvent event)
                        int tableColumn = table.columnAtPoint(event.getPoint());
                        m_btnSorterRenderer.setPressedColumn(tableColumn);
                        m_btnSorterRenderer.setSelectedColumn(tableColumn);
                        if (TableHeaderRenderer.DOWN == m_btnSorterRenderer.getState(tableColumn))
                            isAscent = true;
                        else
                            isAscent = false;
                        // translate to table model index and sort
                        int modelColumn = table.convertColumnIndexToModel(tableColumn);
                        sortByColumn(modelColumn, isAscent);
            public Object getValueAt(int row, int col)
                int rowIndex = row;
                if (indexes != null)
                    rowIndex = indexes[row];
                return data[rowIndex][col];
            public void setValueAt(Object value, int row, int col)
                int rowIndex = row;
                if (indexes != null)
                    rowIndex = indexes[row];
                super.setValueAt(value, rowIndex, col);
            public void sortByColumn(int column, boolean isAscent)
                if (sorter == null)
                    sorter = new ATSTableSorter(this);
                sorter.sort(column, isAscent);
                fireTableDataChanged();
            public int[] getIndexes()
                int n = getRowCount();
                if (indexes != null)
                    if (indexes.length == n)
                        return indexes;
                indexes = new int[n];
                for (int i = 0; i < n; i++)
                    indexes[i] = i;
                return indexes;
            public int getRowCount()
                return data.length;
            public String getColumnName(int c)
                return columnNames[c].toString();
            public int getColumnCount()
                return columnNames.length;
            public Class getColumnClass(int col)
                switch (col)
                case 0:
                    return String.class;
                case 1:
                    return String.class;
                case 2:
                    return String.class;
                case 3:
                    return Integer.class;
                case 4:
                    return Integer.class;
                          default:
                    return Object.class;
        class ATSTableSorter
            SortFilterModel model;
            public ATSTableSorter(SortFilterModel model)
                this.model = model;
            public void sort(int column, boolean isAscent)
                int n = model.getRowCount();
                int[] indexes = model.getIndexes();
                for (int i = 0; i < n - 1; i++)
                    int k = i;
                    for (int j = i + 1; j < n; j++)
                        if (isAscent)
                            if (compare(column, j, k) < 0)
                                k = j;
                        else
                            if (compare(column, j, k) > 0)
                                k = j;
                    int tmp = indexes;
    indexes[i] = indexes[k];
    indexes[k] = tmp;
    public int compare(int column, int row1, int row2)
    Object o1 = model.getValueAt(row1, column);
    Object o2 = model.getValueAt(row2, column);
    if (o1 == null && o2 == null)
    return 0;
    else if (o1 == null)
    return -1;
    else if (o2 == null)
    return 1;
    else
    Class type = model.getColumnClass(column);
    if (type.getSuperclass() == Number.class)
    return compare((Number) o1, (Number) o2);
    else if (type == String.class)
    return ((String) o1).compareTo((String) o2);
    else
    return ((String) o1).compareTo((String) o2);
    public int compare(Number o1, Number o2)
    double n1 = o1.doubleValue();
    double n2 = o2.doubleValue();
    if (n1 < n2)
    return -1;
    else if (n1 > n2)
    return 1;
    else
    return 0;
    class TableHeaderRenderer extends JButton implements TableCellRenderer
    public static final int NONE = 0;
    public static final int DOWN = 1;
    public static final int UP = 2;
    int pushedColumn;
    Hashtable state;
    public TableHeaderRenderer()
    pushedColumn = -1;
    state = new Hashtable();
    setMargin(new Insets(0, 0, 0, 0));
    setHorizontalTextPosition(LEFT);
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    int row, int column)
    setText((value == null) ? "" : value.toString());
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    getModel().setArmed(isPressed);
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    public void setSelectedColumn(int col)
    if (col < 0)
    return;
    Integer value = null;
    Object obj = state.get(new Integer(col));
    if (obj == null)
    value = new Integer(DOWN);
    else
    if (((Integer) obj).intValue() == DOWN)
    value = new Integer(UP);
    else
    value = new Integer(DOWN);
    state.clear();
    state.put(new Integer(col), value);
    public int getState(int col)
    int retValue;
    Object obj = state.get(new Integer(col));
    if (obj == null)
    retValue = NONE;
    else
    if (((Integer) obj).intValue() == DOWN)
    retValue = DOWN;
    else
    retValue = UP;
    return retValue;
    private static void createAndShowGUI()
    JFrame frame = new JFrame("TableDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    TableSorter newContentPane = new TableSorter();
    newContentPane.setOpaque(true); // content panes must be opaque
    frame.setContentPane(newContentPane);
    frame.pack();
    frame.setVisible(true);
    public static void main(String[] args)
    javax.swing.SwingUtilities.invokeLater(new Runnable()
    public void run()
    createAndShowGUI();

  • How to create a dynamic RTF report which creates dynamic columns based on dynamic column selection from a table?

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    Swapnil K.
    Message was edited by: SwapnilK

    Hi All,
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    Swapnil K.

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