我在同一個(gè)文件夾中編寫(xiě)了幾個(gè)類，這是層次結(jié)構(gòu)：bookpirate/-Window.java-Navigator.java-NavEventHandler.java所有文件都有“package bookpirate;” 在一開(kāi)始的時(shí)候這是我導(dǎo)入它們的方法：導(dǎo)航器類：package bookpirate;import javax.swing.*;import java.awt.*;import bookpirate.NavEventHandler;public class Navigator{    private JPanel panel;    public JTextField page;    public JButton pageBack;    public JButton addBefore;    public JButton addAfter;    public JButton pageForward;    public JButton removePage;    public JButton undo;    public JTextField getPage() { return page; }    public JButton getPageBack() { return pageBack; }    public JButton getAddBefore() { return addBefore; }    public JButton getAddAfter() { return addAfter; }    public JButton getPageForward() { return pageForward; }    public JButton getRemovePage() { return removePage; }    public JButton getUndo() { return undo; }    public int nOfPages;    public int getNOfPages() { return nOfPages; }    public static void main(String[] args)    {        new Navigator();    }    public Navigator()    {        setListeners();        System.out.println("Created NavEventHandler");    }這是我編譯 NavEnventHandler 時(shí)得到的結(jié)果：C:\Users\...\bookpirate>javac NavEventHandler.javaNavEventHandler.java:5: error: cannot find symbolimport bookpirate.Navigator;                 ^  symbol:   class Navigator  location: package bookpirateNavEventHandler.java:9: error: cannot find symbol        Navigator navigator;        ^一直以來(lái)我都可以毫無(wú)錯(cuò)誤地將它們編譯在一起C:\Users\Falangrater\Desktop\Files\Programming\bookpirate>javac NavEventHandler.java Navigator.java Window.javaC:\Users\Falangrater\Desktop\Files\Programming\bookpirate>但我無(wú)法一起或單獨(dú)運(yùn)行它們C:\Users\Falangrater\Desktop\Files\Programming\bookpirate>java Window Navigator NavEventHandlerError: Could not find or load main class WindowC:\Users\Falangrater\Desktop\Files\Programming\bookpirate>我嘗試過(guò)制作一個(gè)manifest.txt文件Main-Class: Window我無(wú)法將 .mf 添加到文件中我試圖盡可能簡(jiǎn)潔