JSplitPane: how can I close one side of the jsplitpane?

Question

Hi!
I have a jsplitpane component on my frame. I want to close one side of the jsplitpane when my program loads. And after some time I want to open it back..
Do you happen to know how can I do that?

Answer 1

Either you have not read the complete thread or you have not followed instructions correctly. Instead of adding HierarchyListener on JSpliPane, you are playing with divider before realization of split pane on screen.
Here is modified code [This works 100%]:
import java.awt.*;
import java.awt.event.HierarchyEvent;
import java.awt.event.HierarchyListener;
import javax.swing.*;
import javax.swing.plaf.basic.*;
public class MySplit {
    private static void createAndShowGUI() {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        final JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
                new JButton("first"),
                new JButton("second"));
        splitPane.setOneTouchExpandable(true);
        splitPane.setDividerLocation(150);
        splitPane.setPreferredSize(new Dimension(400, 400));
        splitPane.addHierarchyListener(new HierarchyListener() {
            public void hierarchyChanged(HierarchyEvent e) {
                if ((e.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
                    BasicSplitPaneUI ui = (BasicSplitPaneUI) splitPane.getUI();
                    BasicSplitPaneDivider divider = ui.getDivider();
                    JButton button = (JButton) divider.getComponent(1);
                    button.doClick();
        BasicSplitPaneUI ui = (BasicSplitPaneUI) splitPane.getUI();
        BasicSplitPaneDivider divider = ui.getDivider();
        JButton button = (JButton) divider.getComponent(1);
        button.doClick();*/
        frame.getContentPane().add(splitPane);
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
}Thanks,
Mrityunjoy