JSlider in JTable

Question

Hi,
I insert JSlider in a column of a JTable, redefining renderer and editor. The problem is that when I resized the size of the JTable (or the column with the sliders), the sliders are not resized. They are only resized if I move another window over them. Is is a repaint I have to apply ? The problem is that I do not know where to apply it.
This is my code: I put only the JTable and the renderer, not the editor and the other components.
This is the JTable (with a main to launch it)
package GUI.TimeView.Component.essai2;
import GUI.TimeView.CategoryTimeDimensionView;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
public class TableDialogEditDemo extends JPanel {
    private boolean DEBUG = false;
    JTable table;
    public TableDialogEditDemo() {
        super(new GridLayout(1,0));
        table = new JTable(new MyTableModel());
        table.setPreferredScrollableViewportSize(new Dimension(200, 48));
        //Create the scroll pane and add the table to it.
        JScrollPane scrollPane = new JScrollPane(table);
        table.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_LAST_COLUMN);
        table.getColumnModel().getColumn(0).setResizable(false);
        table.getColumnModel().getColumn(0).setPreferredWidth(80);
        table.getColumnModel().getColumn(1).setResizable(false);
        table.getColumnModel().getColumn(1).setPreferredWidth(80);
        table.getColumnModel().getColumn(2).setCellRenderer(new SliderRenderer());
        table.getTableHeader().setReorderingAllowed(false);
        //Add the scroll pane to this panel.
        add(scrollPane);
    class MyTableModel extends AbstractTableModel {
        private String[] columnNames = {"Curve", "Color", "Transparency", "Displayed"};
        private Object[][] data = {
            {"Average", Color.black, 70, new Boolean(false)},
            {"Minimum", Color.black, 70, new Boolean(false)},
            {"Maximum", Color.black, 70, new Boolean(false)}
        public int getColumnCount() {
            return columnNames.length;
        public int getRowCount() {
            return data.length;
        public String getColumnName(int col) {
            return columnNames[col];
        public Object getValueAt(int row, int col) {
            return data[row][col];
         * 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();
        public boolean isCellEditable(int row, int col) {
            //Note that the data/cell address is constant,
            //no matter where the cell appears onscreen.
            if (col < 1) {
                return false;
            } else {
                return true;
        public void setValueAt(Object value, int row, int col) {
            if (DEBUG) {
                System.out.println("Setting value at " + row + "," + col
                        + " to " + value
                        + " (an instance of "
                        + value.getClass() + ")");
            data[row][col] = value;
            fireTableCellUpdated(row, col);
            if (DEBUG) {
                System.out.println("New value of data:");
                printDebugData();
        private void printDebugData() {
            int numRows = getRowCount();
            int numCols = getColumnCount();
            for (int i=0; i < numRows; i++) {
                System.out.print("    row " + i + ":");
                for (int j=0; j < numCols; j++) {
                    System.out.print("  " + data[i][j]);
                System.out.println();
            System.out.println("--------------------------");
        private Object[] longValues;
     * 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("TableDialogEditDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        JComponent newContentPane = new TableDialogEditDemo();
        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();
}and the renderer:
package GUI.TimeView.Component.essai2;
import java.awt.Color;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
import java.awt.Component;
import javax.swing.BorderFactory;
import javax.swing.JSlider;
import javax.swing.border.Border;
public class SliderRenderer extends JSlider implements TableCellRenderer {
    Border unselectedBorder = null;
    Border selectedBorder = null;
    public SliderRenderer() {
        setMinimum(0);
        setMaximum(100);
        setBackground(Color.white);
        setBounds(0, 0, 100, 10);
        setOpaque(true);
    public Component getTableCellRendererComponent(JTable table, Object val, boolean isSelected, boolean hasFocus, int row, int column) {
            if (isSelected) {
                if (selectedBorder == null) {
                    selectedBorder = BorderFactory.createMatteBorder(1,3,1,3, table.getSelectionBackground());
                setBorder(selectedBorder);
            } else {
                if (unselectedBorder == null) {
                    unselectedBorder = BorderFactory.createMatteBorder(1,3,1,3, table.getBackground());
                setBorder(unselectedBorder);
        int value = (Integer) val;
        setValue(value);
        return this;
}

Answer 1

Do you need more information?
Was I clear in my question?
Thank you