/*** 文本编辑器——记事本类型的应用，可以打开、编辑、保存文本文档。* 可以增加单词高亮和其它的一些特性。* @author cscss**/
public class Editor extends JFrame{public JTextPane textPane = new JTextPane(); //文本窗格d，编辑窗口public JFileChooser filechooser = new JFileChooser(); //文件选择器public Editor(){
super("简记");Action[] actions=			//菜单项的各种功能{new NewAction(),new OpenAction(),new SaveAction(),new CutAction(),new CopyAction(),new PasteAction(),new AboutAction(),new ExitAction(),new HelpAction()};setJMenuBar(createJMenuBar(actions));		//根据actions创建菜单栏Container container=getContentPane();		container.add(textPane, BorderLayout.CENTER);setSize(1300,1500);setVisible(true);}private JMenuBar createJMenuBar(Action[] actions){JMenuBar menuBar = new JMenuBar();JMenu menuFile= new JMenu("文件（F）");JMenu menuEdit= new JMenu("编辑（E）");JMenu menuAbout= new JMenu("帮助（H）");menuFile.add(new JMenuItem(actions[0]));menuFile.add(new JMenuItem(actions[1]));menuFile.add(new JMenuItem(actions[2]));menuFile.add(new JMenuItem(actions[7]));menuEdit.add(new JMenuItem(actions[3]));menuEdit.add(new JMenuItem(actions[4]));menuEdit.add(new JMenuItem(actions[5]));menuAbout.add(new JMenuItem(actions[6]));menuAbout.add(new JMenuItem(actions[8]));menuBar.add(menuFile);menuBar.add(menuEdit);menuBar.add(menuAbout);return menuBar;}class NewAction extends AbstractAction		//新建{public NewAction(){super("新建(N)     Ctrl+N");}public void actionPerformed(ActionEvent e){textPane.setDocument(new DefaultStyledDocument());}}class OpenAction extends AbstractAction		//打开{public OpenAction(){super("打开(O)     Ctrl+O");}public void actionPerformed(ActionEvent e){int i=filechooser.showOpenDialog(Editor.this);			//显示打开文件对话框if(i==JFileChooser.APPROVE_OPTION)			//点击对话框打开选项{File f=filechooser.getSelectedFile();	//得到选择的文件try{InputStream is=new FileInputStream(f);textPane.read(is, "d");}catch(Exception ex){ex.printStackTrace();}}}}class SaveAction extends AbstractAction		//保存{public SaveAction(){super("保存(S)     Ctrl+S");}public void actionPerformed(ActionEvent e){int i=filechooser.showSaveDialog(Editor.this);if(i==JFileChooser.APPROVE_OPTION){File f=filechooser.getSelectedFile();try{FileOutputStream out=new FileOutputStream(f);out.write(textPane.getText().getBytes());}catch(Exception ex){ex.printStackTrace();}}}}class ExitAction extends AbstractAction		//退出{public ExitAction(){super("退出(X)");}public void actionPerformed(ActionEvent e){dispose();}}class CutAction extends AbstractAction		//剪切{public CutAction(){super("剪切(T)     Ctrl+X");}public void actionPerformed(ActionEvent e){textPane.cut();}}class CopyAction extends AbstractAction		//复制{public CopyAction(){super("复制(C)     Ctrl+C");}public void actionPerformed(ActionEvent e){textPane.copy();}}class PasteAction extends AbstractAction		//粘贴{public PasteAction(){super("粘贴(P)     Ctrl+V");}public void actionPerformed(ActionEvent e){textPane.paste();}}class AboutAction extends AbstractAction{public AboutAction(){super("关于简记(A)");}public void actionPerformed(ActionEvent e){JOptionPane.showMessageDialog(Editor.this,"实现了记事本的一些基本功能","关于",JOptionPane.PLAIN_MESSAGE);}}class HelpAction extends AbstractAction{public HelpAction(){super("联系开发者");}public void actionPerformed(ActionEvent e){JOptionPane.showMessageDialog(Editor.this,"cscssg@foxmail.com","开发者邮箱",JOptionPane.PLAIN_MESSAGE);}}public static void main(String[] args) {// TODO Auto-generated method stubnew Editor();}}

 

花了一点时间，做了这道题，希望对大家有帮助。

 

欢迎关注我，每天分享更多有意思的学习经验。