Java by API/javax.accessibility/AccessibleAction

AccessibleAction: getAccessibleActionDescription(int i)

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.accessibility.AccessibleAction;
import javax.accessibility.AccessibleContext;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JToolBar;
public class MainClass extends JFrame {
  MainClass(String title) {
    super(title);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JToolBar toolBar = new JToolBar();
    Action a = new AbstractAction("Demo") {
      public void actionPerformed(ActionEvent e) {
        System.out.println("Action taken.");
      }
    };
    JButton b = toolBar.add(a);
    b.setText("Demo Button");
    b.setToolTipText("Press me to take action.");
    JMenu mainMenu = new JMenu("Menu");
    JMenuItem mi = mainMenu.add(a);
    mi.getAccessibleContext().setAccessibleName("Menu item");
    JMenuBar mb = new JMenuBar();
    mb.add(mainMenu);
    setJMenuBar(mb);
    JPanel pane = new JPanel();
    pane.setLayout(new BorderLayout());
    pane.setPreferredSize(new Dimension(200, 100));
    pane.add(toolBar, BorderLayout.NORTH);
    setContentPane(pane);
    pack();
    setVisible(true);
  }
  public static void main(String[] args) {
    MainClass ad2;
    ad2 = new MainClass("Accessibility Demo2");
    ad2.dumpActionInfo(ad2.getAccessibleContext());
  }
  void dumpActionInfo(AccessibleContext ac) {
    AccessibleAction aa = ac.getAccessibleAction();
    if (aa != null) {
      String s = ac.getAccessibleName();
      System.out.println(s);
      int count = aa.getAccessibleActionCount();
      for (int i = 0; i < count; i++) {
        s = aa.getAccessibleActionDescription(i);
        System.out.println("Description = " + s);
      }
    }
    int nChildren = ac.getAccessibleChildrenCount();
    for (int i = 0; i < nChildren; i++)
      dumpActionInfo(ac.getAccessibleChild(i).getAccessibleContext());
  }
}