debugger/debug_ui_tools_swing/src/main/com/thesett/aima/logic/fol/wam/debugger/uifactory/impl/SwingMainWindow.java
private void showLeftBar()
    {
        // Left vertical bar.
        Component bar = factory.createGripPanel(layout.getLeftPaneWidthResizer(), true);

        frame.getContentPane().add(bar, DesktopAppLayout.LEFT_VERTICAL_BAR);
    }
private void showLeftBar()
    {
        // Left vertical bar.
        Component bar = factory.createGripPanel(layout.getLeftPaneWidthResizer(), true);

        frame.getContentPane().add(bar, DesktopAppLayout.LEFT_VERTICAL_BAR);
    }
Creates a vertical grip-able bar for adjusting the left panel width.