java记事本中的格式设置

/* * NotePad.java * * Created on __DATE__, __TIME__ */package gui.com;import java.awt.event.*;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import javax.swing.JFileChooser;/** * * @author  __USER__ */public class NotePad extends javax.swing.JFrame implements ActionListener {/** Creates new form NotePad */public NotePad() {initComponents();                         //注册监听this.itemCopy.addActionListener(this);this.itemZhuangTai.addActionListener(this);this.itemSave.addActionListener(this);this.itemPaste.addActionListener(this);this.itemOpen.addActionListener(this);this.itemNew.addActionListener(this);this.itemCut.addActionListener(this);this.itemDelete.addActionListener(this);this.itemExit.addActionListener(this);this.itemFont.addActionListener(this);this.mPaste.addActionListener(this);this.mCut.addActionListener(this);this.mCopy.addActionListener(this);this.mDelete.addActionListener(this);this.setLocationRelativeTo(null);               //窗体显示位置}/** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. *///GEN-BEGIN:initComponents// <editor-fold defaultstate="collapsed" desc="Generated Code">private void initComponents() {popMenu = new javax.swing.JPopupMenu();mCut = new javax.swing.JMenuItem();mCopy = new javax.swing.JMenuItem();mPaste = new javax.swing.JMenuItem();mDelete = new javax.swing.JMenuItem();jScrollPane1 = new javax.swing.JScrollPane();ta = new javax.swing.JTextArea();jMenuBar1 = new javax.swing.JMenuBar();mFile = new javax.swing.JMenu();itemNew = new javax.swing.JMenuItem();itemOpen = new javax.swing.JMenuItem();itemSave = new javax.swing.JMenuItem();jSeparator1 = new javax.swing.JSeparator();itemExit = new javax.swing.JMenuItem();mEdit = new javax.swing.JMenu();itemCut = new javax.swing.JMenuItem();itemCopy = new javax.swing.JMenuItem();itemPaste = new javax.swing.JMenuItem();itemDelete = new javax.swing.JMenuItem();mStyle = new javax.swing.JMenu();itemFont = new javax.swing.JMenuItem();mSee = new javax.swing.JMenu();itemZhuangTai = new javax.swing.JMenuItem();mHelp = new javax.swing.JMenu();jMenuItem1 = new javax.swing.JMenuItem();jMenuItem2 = new javax.swing.JMenuItem();mCut.setText("\u526a\u5207");popMenu.add(mCut);mCopy.setText("\u590d\u5236");popMenu.add(mCopy);mPaste.setText("\u7c98\u8d34");popMenu.add(mPaste);mDelete.setText("\u5220\u9664");popMenu.add(mDelete);setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);ta.setColumns(20);ta.setRows(5);ta.addMouseListener(new java.awt.event.MouseAdapter() {//为鼠标注册监听public void mouseReleased(java.awt.event.MouseEvent evt) {taMouseReleased(evt);}});jScrollPane1.setViewportView(ta);mFile.setText("\u6587\u4ef6(F)");itemNew.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_N,java.awt.event.InputEvent.CTRL_MASK));itemNew.setText("\u65b0\u5efa");mFile.add(itemNew);itemOpen.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O,java.awt.event.InputEvent.CTRL_MASK));itemOpen.setText("\u6253\u5f00");mFile.add(itemOpen);itemSave.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S,java.awt.event.InputEvent.CTRL_MASK));itemSave.setText("\u4fdd\u5b58");mFile.add(itemSave);mFile.add(jSeparator1);itemExit.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_E,java.awt.event.InputEvent.CTRL_MASK));itemExit.setText("\u9000\u51fa");mFile.add(itemExit);jMenuBar1.add(mFile);mEdit.setText("\u7f16\u8f91(E)");itemCut.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_X,java.awt.event.InputEvent.CTRL_MASK));itemCut.setText("\u526a\u5207");mEdit.add(itemCut);itemCopy.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_C,java.awt.event.InputEvent.CTRL_MASK));itemCopy.setText("\u590d\u5236");mEdit.add(itemCopy);itemPaste.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_V,java.awt.event.InputEvent.CTRL_MASK));itemPaste.setText("\u7c98\u8d34");mEdit.add(itemPaste);itemDelete.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_DELETE,java.awt.event.InputEvent.CTRL_MASK));itemDelete.setText("\u5220\u9664");mEdit.add(itemDelete);jMenuBar1.add(mEdit);mStyle.setText("\u683c\u5f0f(O)");itemFont.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_F,java.awt.event.InputEvent.CTRL_MASK));itemFont.setText("\u5b57\u4f53");mStyle.add(itemFont);jMenuBar1.add(mStyle);mSee.setText("\u67e5\u770b(V)");itemZhuangTai.setText("\u72b6\u6001\u680f");mSee.add(itemZhuangTai);jMenuBar1.add(mSee);mHelp.setText("\u5e2e\u52a9(H)");jMenuItem1.setText("\u4ea7\u770b\u5e2e\u52a9");mHelp.add(jMenuItem1);jMenuItem2.setText("\u5173\u4e8e\u8bb0\u4e8b\u672c");mHelp.add(jMenuItem2);jMenuBar1.add(mHelp);setJMenuBar(jMenuBar1);javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());getContentPane().setLayout(layout);layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING,javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE));layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING,javax.swing.GroupLayout.DEFAULT_SIZE, 279, Short.MAX_VALUE));pack();}// </editor-fold>//GEN-END:initComponentsprivate void taMouseReleased(java.awt.event.MouseEvent evt) {      //鼠标监听的实现方法// TODO add your handling code here: if(evt.isPopupTrigger()){                                     //如果触发鼠标右击执行操作this.popMenu.show(this.ta, evt.getX(),evt.getY());}}/** * @param args the command line arguments */public static void main(String args[]) {java.awt.EventQueue.invokeLater(new Runnable() {public void run() {new NotePad().setVisible(true);}});}//GEN-BEGIN:variables// Variables declaration - do not modifyprivate javax.swing.JMenuItem itemCopy;private javax.swing.JMenuItem itemCut;private javax.swing.JMenuItem itemDelete;private javax.swing.JMenuItem itemExit;private javax.swing.JMenuItem itemFont;private javax.swing.JMenuItem itemNew;private javax.swing.JMenuItem itemOpen;private javax.swing.JMenuItem itemPaste;private javax.swing.JMenuItem itemSave;private javax.swing.JMenuItem itemZhuangTai;private javax.swing.JMenuBar jMenuBar1;private javax.swing.JMenuItem jMenuItem1;private javax.swing.JMenuItem jMenuItem2;private javax.swing.JScrollPane jScrollPane1;private javax.swing.JSeparator jSeparator1;private javax.swing.JMenuItem mCopy;private javax.swing.JMenuItem mCut;private javax.swing.JMenuItem mDelete;private javax.swing.JMenu mEdit;private javax.swing.JMenu mFile;private javax.swing.JMenu mHelp;private javax.swing.JMenuItem mPaste;private javax.swing.JMenu mSee;private javax.swing.JMenu mStyle;private javax.swing.JPopupMenu popMenu;private javax.swing.JTextArea ta;String clipboard;//用于剪切或是复制时临时储存数据// End of variables declaration//GEN-END:variables@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubString s = e.getActionCommand();              //接收触发的按键名称JFileChooser jfc = new JFileChooser();        //JFileChooser用来提供一个文件对话框，可以通过其showXxxDialog打开一个模态对话框，或直接实例化并加入到其他组件。if(s.equals("打开")){int result = jfc.showOpenDialog(this);    //创建变量接收文件选择器状态if(result == JFileChooser.OPEN_DIALOG){ //判断是否打开视图File fname = jfc.getSelectedFile();  //用fname将取出的文件名及路径保存FileReader fr = null;                //定义文件字节输入流，并初始化为nullBufferedReader br = null;try {fr=new FileReader(fname);       //创建文件输入流对象，以fname为参数br=new BufferedReader(fr);//创建文件输出流对象，以文件输入流对象做实参String line = br.readLine();//读取一个文本行。通过下列字符之一即可认为某行已终止：换行 ('\n')、回车 ('\r') 或回车后直接跟着换行。 包含该行内容的字符串，不包含任何行终止符，如果已到达流末尾，则返回 null while (line!=null){//判断是否读到行尾this.ta.append(line +"\n");//像指定的文档内添加指定字符line = br.readLine();//从新读入下一行}} catch (FileNotFoundException e1) {// TODO Auto-generated catch blocke1.printStackTrace();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}finally{try {fr.close();br.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}}else if(s.equals("保存")){int result = jfc.showSaveDialog(this);if(result == JFileChooser.APPROVE_OPTION){File f = jfc.getSelectedFile();        //返回选中的文件。可由程序员通过 setFile 或者通过用户操作（如在 UI 中键入文件名，或者从 UI 中的列表内选择文件）来进行此设置。 FileWriter fw = null;BufferedWriter bw = null;try {fw = new FileWriter(f);        //创建文件输出流，用文件路径做参数bw = new BufferedWriter(fw);//创建缓冲输出流String con = this.ta.getText();String[] strs = con.split("\n");for(int i = 0;i<strs.length;i++){bw.write(strs[i]);bw.newLine();}bw.flush();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}else if(s.equals("退出")){System.exit(0);}else if(s.equals("剪切")){System.out.print(s);int start = ta.getSelectionStart();//获取选取内容的开始位置int end = ta.getSelectionEnd();clipboard = ta.getSelectedText();//将选中内容复制到剪切板ta.replaceRange("", start, end);//替换选中区域内容}else if(s.equals("复制")){System.out.print(s);clipboard = ta.getSelectedText();}else if(s.equals("粘贴")){System.out.print(s);int position = 0;position = ta.getCaretPosition();//获取光标位置ta.insert(clipboard, position);//将剪切板内容插入到指定地点}else if(s.equals("删除")){System.out.print(s);int start = ta.getSelectionStart();int end = ta.getSelectionEnd();ta.replaceRange("", start, end);}else if(s.equals("字体")){System.out.print(s);FontDialog fd = new FontDialog(this,true);fd.setVisible(true);this.ta.setFont(fd.f);  //调用外部类}}}