Which is the better way or any other advice?
I know a fifth way with actionPerformed in an anonymous class, but I
don't like it in this app.

MyAppFrame.java is the GUI implementation of MyApp.java.
A and B are two items in a menu and two buttons in the toolbar:

public class MyAppFrame extends JFrame {

    //Constructors

    public MyAppFrame(String title) {

        setTitle(title);
        ... // add A, B to menu and to toolbar


/* First Way (like on the book)

    A = new MenuItemAction(...);
    B = new MenuItemAction(...);

    // the class sets keystroke, icon, etc and performs actions

        class MenuItemAction extends AbstractAction {

            //Constructors

            MenuItemAction(...) {
        ...
            }

                    public void actionPerformed(ActionEvent e) {

                String name = (String)getValue(NAME);

                if (name.equals(A.getValue(NAME))) {
                // do something ...
                } else if (name.equals(B.getValue(NAME))) {
                    // do something else ...
                }
            }
     }

// First Way end */


/* Second Way

    A = new AActionClass(...);
    B = new BActionClass(...);

        abstract class MenuItemAction extends AbstractAction {

            //Constructors

            MenuItemAction(...) {
        ...
            }
        }

    public class AActionClass extends MenuItemAction {
            //Constructors
            public AActionClass(...) {
                super(...);
            }

            public void actionPerformed(ActionEvent e) {
                // do something ...
            }
     }

    public class BActionClass extends MenuItemAction {
            //Constructors
            public BActionClass(...) {
                super(...);
            }

            public void actionPerformed(ActionEvent e) {
                // do something else ...
            }
     }

// Second Way end */


/* Third Way

// like Second Way with AActionClass and BActionClass implemented in
// separate files (i.e. AActionClass.java and BActionClass.java). But
// I have to change some local vars from private to global, because
// these classes use them in their actionPerformed method.

// Third Way end */


/* Fourth Way

    A = new AActionClass(...);
    B = new BActionClass(...);

    class AActionClass extends AbstractAction {
        //Constructors
        public AActionClass(...) {
            super(...);
        }

        public void actionPerformed(ActionEvent e) {
            // do something ...
        }
     }

    class BActionClass extends AbstractAction {
        //Constructors
        public BActionClass(...) {
            super(...);
        }

        public void actionPerformed(ActionEvent e) {
            // do something else ...
        }
     }

// Fourth Way end */


// local vars

private ...

}

Thanks in advance,
Regargs,
Marcello.