package com.twu.biblioteca.menu;

public class QuitAction implements Action {

    @Override
    public String toString() {
        return "Quit";
    }

    @Override
    public void performAction() {
        System.exit(0);
    }
}

package com.twu.biblioteca.menu;

public class QuitAction implements Action {

    @Override
    public String toString() {
        return "Quit";
    }

    @Override
    public void performAction() {

    }
}

Quit operation does not perform any action
Quit operation does not perform any action
