diff --git "a/src/images/\350\256\260\344\272\213\346\234\254\345\233\276\346\240\207.jpg" "b/src/images/\350\256\260\344\272\213\346\234\254\345\233\276\346\240\207.jpg"
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diff --git a/src/java2020spring/MainFrame.java b/src/java2020spring/MainFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..e36498f884b35f4c0a38a32c91241861eb1b893a
--- /dev/null
+++ b/src/java2020spring/MainFrame.java
@@ -0,0 +1,648 @@
+package java2020spring;
+
+import java.awt.*;
+
+import java.awt.event.*;
+import java.io.*;
+import java.sql.Date;
+
+import javax.swing.*;
+import javax.swing.event.CaretEvent;
+import javax.swing.event.CaretListener;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import javax.swing.undo.UndoManager;
+
+public class MainFrame extends JFrame{
+	JTextArea textArea;//创建文本区
+	JFileChooser FileChooser;//文件选择器 
+	FileReader fileReader;//文件字符输入流
+	FileWriter fileWriter;//文件字符输出流
+	BufferedReader in;//缓冲输入流
+	BufferedWriter out;//缓冲输出流
+	JMenuBar menuBar;//创建菜单条
+	JMenu mnNewMenu,mnNewMenu_1,mnNewMenu_2,mnNewMenu_3,mnNewMenu_4;//创建菜单
+    JMenuItem mntmNewMenuItem,mntmNewMenuItem_1,mntmNewMenuItem_2,mntmNewMenuItem_3,mntmNewMenuItem_4,
+    mntmNewMenuItem_5,mntmNewMenuItem_6,mntmNewMenuItem_7,mntmNewMenuItem_8,mntmNewMenuItem_9,mntmNewMenuItem_10,
+    mntmNewMenuItem_11,mntmNewMenuItem_12,mntmNewMenuItem_13,mntmNewMenuItem_14,mntmNewMenuItem_15,mntmNewMenuItem_16,
+    mntmNewMenuItem_17,mntmNewMenuItem_18,mntmNewMenuItem_19,mntmNewMenuItem_20,mntmNewMenuItem_21,mntmNewMenuItem_22,
+    mntmNewMenuItem_23,mntmNewMenuItem_24,mntmNewMenuItem_25,mntmNewMenuItem_26,mntmNewMenuItem_27,mntmNewMenuItem_28,
+    mntmNewMenuItem_29;//创建菜单项
+    JCheckBoxMenuItem chckbxmntmNewCheckItem,chckbxmntmNewCheckItem_1;//菜单中的可选项
+    UndoManager undoManager;//创建撤销、恢复管理器
+    JPopupMenu popupMenu_1;//创建弹出菜单
+    int line=0;//创建状态栏显示行数
+    int colum=0;//创建状态栏显示列数
+    int length=0;//状态栏显示字数
+   
+ 
+	public static void main(String[] args) {
+		EventQueue.invokeLater(new Runnable() {
+			public void run() {
+				try {
+					MainFrame frame = new MainFrame();
+					frame.setVisible(true);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		});
+	}
+
+	/**
+	 * Create the frame.
+	 */
+	public MainFrame() {
+		setIconImage(Toolkit.getDefaultToolkit().getImage("D:\\java\\javademo\\java2021spring\\src\\images\\记事本图标.jpg"));
+		//设置记事本图标
+		setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		setBackground(Color.WHITE);
+		setTitle("小玉记事本");
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		setBounds(100, 100, 800, 600);
+		
+		JTextArea textArea = new JTextArea();//创建文本框
+		textArea.setFont(new Font("Monospaced", Font.PLAIN, 14));
+		JScrollPane scroll=new JScrollPane(textArea);//创建文本区滚动条
+		getContentPane().add(scroll,BorderLayout.CENTER);
+		FileChooser=new JFileChooser();//文件选择框
+		FileNameExtensionFilter filter=new FileNameExtensionFilter("文本文件","html","java");//文件过滤
+		FileChooser.setFileFilter(filter);//将过滤器加入到文件选择器中
+		
+		JMenuBar menuBar = new JMenuBar();//创建菜单条
+		setJMenuBar(menuBar);//将菜单条放置到窗口顶端
+		
+//文件菜单
+		JMenu mnNewMenu = new JMenu("文件(F)");
+		mnNewMenu.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		menuBar.add(mnNewMenu);//添加菜单
+		
+   //"新建"功能	
+		JMenuItem mntmNewMenuItem= new JMenuItem("新建(N)");
+		mntmNewMenuItem.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setText(null);//新建功能清空文本框
+			}
+		});
+		mntmNewMenuItem.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu.add(mntmNewMenuItem);
+		mntmNewMenuItem.setMnemonic('N');
+		mntmNewMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,ActionEvent.CTRL_MASK));
+		
+   //"打开"功能		
+		JMenuItem mntmNewMenuItem_1 = new JMenuItem("打开(O)...");
+		mntmNewMenuItem_1.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				  int state=FileChooser.showOpenDialog(null);//将文件选择器置于屏幕中央
+				  if(state==JFileChooser.APPROVE_OPTION){
+				      textArea.setText(null);//清空文本区
+				      try{  File dir=FileChooser.getCurrentDirectory();//获取当前目录
+				            String name=FileChooser.getSelectedFile().getName();//获取文件名
+				            File file=new File(dir,name);
+				            fileReader=new FileReader(file);//输入选中文件的文本
+				            in=new BufferedReader(fileReader);//将文本写入缓存
+				            String string=null;
+						    while((string=in.readLine())!=null){//从文件中读取文本行
+								 textArea.append(string+"\n");
+								 }
+				                 in.close();//关闭上层流，缓存被立刻写入目的地
+				                 fileReader.close();//关闭文件字符输入流
+				           }
+				       catch(IOException e1){
+				    	   System.out.println("Error ");
+				       }//捕获文件读写发生的异常
+				  }
+	    	}
+		});
+		mntmNewMenuItem_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu.add(mntmNewMenuItem_1);
+		mntmNewMenuItem_1.setMnemonic('O');
+		mntmNewMenuItem_1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,ActionEvent.CTRL_MASK));
+		
+   //"保存"功能
+		JMenuItem mntmNewMenuItem_2 = new JMenuItem("保存(S)");
+		mntmNewMenuItem_2.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				 int state=FileChooser.showOpenDialog(null);//将文件选择器置于屏幕中央
+				  if(state==JFileChooser.APPROVE_OPTION){
+				      try{ File dir=FileChooser.getCurrentDirectory();//获取当前目录
+				           String name=FileChooser.getSelectedFile().getName();//获取文件名
+				           File file=new File(dir,name);
+				           fileWriter=new FileWriter(file);//将文本写入字符输出流
+				           out=new BufferedWriter(fileWriter);//将文本写入缓冲输出流
+				           out.write(textArea.getText());
+				           out.flush();//把缓冲区里的内容写到目的地
+				           out.close();//关闭上层流
+				           fileWriter.close();
+				           }
+				       catch(IOException e1){
+				    	   System.out.println("Error ");
+				        }//捕获文件读写发生的异常
+				    }
+			}
+		});
+		mntmNewMenuItem_2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu.add(mntmNewMenuItem_2);
+		mntmNewMenuItem_2.setMnemonic('S');
+        mntmNewMenuItem_2.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,ActionEvent.CTRL_MASK));
+		
+   //"另存为"功能		
+		JMenuItem mntmNewMenuItem_3 = new JMenuItem("另存为(A)");
+		mntmNewMenuItem_3.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				 int state=FileChooser.showOpenDialog(null);//将文件选择器置于屏幕中央
+				  if(state==JFileChooser.APPROVE_OPTION){
+				      try{ File dir=FileChooser.getCurrentDirectory();//获取当前目录
+				           String name=FileChooser.getSelectedFile().getName();//获取文件名
+				           File file=new File(dir,name);
+				           fileWriter=new FileWriter(file);//将文本写入字符输出流
+				           out=new BufferedWriter(fileWriter);//将文本写入缓冲输出流
+				           out.write(textArea.getText());
+				           out.flush();//把缓冲区里的内容写到目的地
+				           out.close();//关闭上层流
+				           fileWriter.close();
+				           }
+				       catch(IOException e1){
+				    	   System.out.println("Error ");
+				        }//捕获文件读写发生的异常
+				    }
+			}
+		});
+		mntmNewMenuItem_3.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mntmNewMenuItem_3.setMnemonic('A');
+		mntmNewMenuItem_3.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,ActionEvent.CTRL_MASK|ActionEvent.SHIFT_MASK));
+		mnNewMenu.add(mntmNewMenuItem_3);
+		mnNewMenu.addSeparator();
+		
+   //"退出"功能		
+		JMenuItem mntmNewMenuItem_4 = new JMenuItem("退出(X)");
+		mntmNewMenuItem_4.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				System.exit(0);//清空文本区，退出程序
+			}
+		});
+		mntmNewMenuItem_4.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu.add(mntmNewMenuItem_4);
+		mntmNewMenuItem_4.setMnemonic('X');
+
+//编辑菜单
+		JMenu mnNewMenu_1 = new JMenu("编辑(E)");
+		mnNewMenu_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		menuBar.add(mnNewMenu_1);
+		
+   //"撤销"功能		
+		JMenuItem mntmNewMenuItem_5 = new JMenuItem("撤销(U)");
+		UndoManager undoManager=new UndoManager();
+		textArea.getDocument().addUndoableEditListener(undoManager);//为文本添加监听器
+		mntmNewMenuItem_5.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(undoManager.canUndo()) {
+					undoManager.undo();//撤销上一个输入的内容
+				} else {
+					JOptionPane.showMessageDialog(null, "无法撤销","警告",JOptionPane.WARNING_MESSAGE);
+				}	
+			}
+		});
+		mntmNewMenuItem_5.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_5);
+		mntmNewMenuItem_5.setMnemonic('U');
+		mntmNewMenuItem_5.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,ActionEvent.CTRL_MASK));
+		
+   //"恢复"功能
+		JMenuItem mntmNewMenuItem_15 = new JMenuItem("恢复");
+		mntmNewMenuItem_15.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(undoManager.canRedo()) {
+					undoManager.redo();//恢复撤销的内容
+				} else {
+					JOptionPane.showMessageDialog(null, "无法恢复","警告",JOptionPane.WARNING_MESSAGE);
+				}
+			}
+		});
+		mntmNewMenuItem_15.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_15);
+		mnNewMenu_1.addSeparator();
+
+   //"剪切"功能		
+		JMenuItem mntmNewMenuItem_6 = new JMenuItem("剪切(T)");
+		mntmNewMenuItem_6.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.cut();//剪切选中的内容
+			}
+		});
+		mntmNewMenuItem_6.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_6);
+		mntmNewMenuItem_6.setMnemonic('T');
+		mntmNewMenuItem_6.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,ActionEvent.CTRL_MASK));
+		
+   //"复制"功能		
+		JMenuItem mntmNewMenuItem_7 = new JMenuItem("复制(C)");
+		mntmNewMenuItem_7.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.copy();//复制选中的内容
+			}
+		});
+		mntmNewMenuItem_7.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_7);
+		mntmNewMenuItem_7.setMnemonic('C');
+		mntmNewMenuItem_7.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,ActionEvent.CTRL_MASK));
+	
+   //"粘贴"功能
+		JMenuItem mntmNewMenuItem_8 = new JMenuItem("粘贴(P)");
+		mntmNewMenuItem_8.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.paste();//输出剪切或复制的内容
+			}
+		});
+		mntmNewMenuItem_8.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_8);
+		mntmNewMenuItem_8.setMnemonic('P');
+		mntmNewMenuItem_8.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,ActionEvent.CTRL_MASK));
+		mnNewMenu_1.addSeparator();
+		
+   //"全选"功能
+		JMenuItem mntmNewMenuItem_12 = new JMenuItem("全选(A)");
+		mntmNewMenuItem_12.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.selectAll();//选中文本区中的所有内容
+			}
+		});
+		mntmNewMenuItem_12.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_12);
+		mntmNewMenuItem_12.setMnemonic('A');
+		mntmNewMenuItem_12.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,ActionEvent.CTRL_MASK));
+
+   //"删除"功能
+		JMenuItem mntmNewMenuItem_9 = new JMenuItem("删除(DEL)");
+		mntmNewMenuItem_9.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String string=textArea.getText().toString();
+				textArea.setText(string.substring(0,textArea.getSelectionStart()));//删除选中的文本
+			}
+		});
+		mntmNewMenuItem_9.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_1.add(mntmNewMenuItem_9);
+		mntmNewMenuItem_9.setMnemonic(KeyEvent.VK_DELETE);
+
+//格式菜单
+		JMenu mnNewMenu_2 = new JMenu("格式(O)");
+		mnNewMenu_2.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		menuBar.add(mnNewMenu_2);
+
+   //"自动换行"功能
+		JCheckBoxMenuItem chckbxmntmNewCheckItem = new JCheckBoxMenuItem("自动换行(W)");
+		chckbxmntmNewCheckItem.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(chckbxmntmNewCheckItem.isSelected()) {
+					textArea.setLineWrap(true);
+				} else {
+					textArea.setLineWrap(false);
+				}
+			}
+		});
+		chckbxmntmNewCheckItem.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_2.add(chckbxmntmNewCheckItem);
+		chckbxmntmNewCheckItem.setMnemonic('W');
+		
+	//"背景颜色"功能	
+		JMenu mnNewMenu_5 = new JMenu("背景颜色");
+		mnNewMenu_5.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_2.add(mnNewMenu_5);
+		//
+		JMenuItem mntmNewMenuItem_23 = new JMenuItem("白色");
+		mntmNewMenuItem_23.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.WHITE);
+			}
+		});
+		mntmNewMenuItem_23.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_23);
+		
+		//
+		JMenuItem mntmNewMenuItem_24 = new JMenuItem("黑色");
+		mntmNewMenuItem_24.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.BLACK);
+			}
+		});
+		mntmNewMenuItem_24.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_24);
+		
+		//
+		JMenuItem mntmNewMenuItem_25 = new JMenuItem("灰色");
+		mntmNewMenuItem_25.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.GRAY);
+			}
+		});
+		mntmNewMenuItem_25.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_25);
+	
+		//
+		JMenuItem mntmNewMenuItem_22 = new JMenuItem("粉色");
+		mntmNewMenuItem_22.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.PINK);
+			}
+		});
+		mntmNewMenuItem_22.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_22);
+		
+		//
+		JMenuItem mntmNewMenuItem_26 = new JMenuItem("红色");
+		mntmNewMenuItem_26.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.RED);
+			}
+		});
+		mntmNewMenuItem_26.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_26);
+		
+		//
+		JMenuItem mntmNewMenuItem_27 = new JMenuItem("黄色");
+		mntmNewMenuItem_27.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.YELLOW);
+			}
+		});
+		mntmNewMenuItem_27.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_27);
+		
+		//
+		JMenuItem mntmNewMenuItem_28 = new JMenuItem("绿色");
+		mntmNewMenuItem_28.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+			   textArea.setBackground(Color.GREEN);
+			}
+		});
+		mntmNewMenuItem_28.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_5.add(mntmNewMenuItem_28);
+	
+	//"字体颜色"功能	
+		JMenu mnNewMenu_6 = new JMenu("字体颜色");
+		mnNewMenu_6.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_2.add(mnNewMenu_6);
+		
+		JMenuItem mntmNewMenuItem_29 = new JMenuItem("白色");
+		mntmNewMenuItem_29.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.WHITE);
+			}
+		});
+		mntmNewMenuItem_29.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_29);
+	
+		JMenuItem mntmNewMenuItem_30 = new JMenuItem("黑色");
+		mntmNewMenuItem_30.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.BLACK);
+			}
+		});
+		mntmNewMenuItem_30.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_30);
+		
+		JMenuItem mntmNewMenuItem_31 = new JMenuItem("粉色");
+		mntmNewMenuItem_31.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.PINK);
+			}
+		});
+		mntmNewMenuItem_31.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_31);
+		
+		JMenuItem mntmNewMenuItem_32 = new JMenuItem("黄色");
+		mntmNewMenuItem_32.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.YELLOW);
+			}
+		});
+		mntmNewMenuItem_32.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_32);
+		
+		JMenuItem mntmNewMenuItem_33 = new JMenuItem("绿色");
+		mntmNewMenuItem_33.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.GREEN);
+			}
+		});
+		mntmNewMenuItem_33.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_33);
+		
+		JMenuItem mntmNewMenuItem_34 = new JMenuItem("红色");
+		mntmNewMenuItem_34.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.setForeground(Color.RED);
+			}
+		});
+		mntmNewMenuItem_34.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_6.add(mntmNewMenuItem_34);
+		
+		
+//快捷菜单
+		JPopupMenu popupMenu_1 = new JPopupMenu();
+		addPopup(textArea, popupMenu_1);
+		//撤销
+		JMenuItem mntmNewMenuItem_16 = new JMenuItem("撤销(U)");
+		mntmNewMenuItem_16.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(undoManager.canUndo()) {
+					undoManager.undo();//撤销上一个输入的内容
+				} else {
+					JOptionPane.showMessageDialog(null, "无法撤销","警告",JOptionPane.WARNING_MESSAGE);
+				}	
+			}
+		});
+		mntmNewMenuItem_16.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_16);
+		mntmNewMenuItem_16.setMnemonic('U');
+		
+		JSeparator separator = new JSeparator();
+		popupMenu_1.add(separator);
+		
+		//剪切
+		JMenuItem mntmNewMenuItem_17 = new JMenuItem("剪切(T)");
+		mntmNewMenuItem_17.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.cut();//剪切选中的内容
+			}
+		});
+		mntmNewMenuItem_17.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_17);
+		mntmNewMenuItem_17.setMnemonic('T');
+		
+		//复制
+		JMenuItem mntmNewMenuItem_18 = new JMenuItem("复制(C)");
+		mntmNewMenuItem_18.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.copy();//复制选中的内容
+			}
+		});
+		mntmNewMenuItem_18.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_18);
+		mntmNewMenuItem_18.setMnemonic('C');
+		
+		//粘贴
+		JMenuItem mntmNewMenuItem_19 = new JMenuItem("粘贴(P)");
+		mntmNewMenuItem_19.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.paste();//输出剪切或复制的内容
+			}
+		});
+		mntmNewMenuItem_19.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_19);
+		mntmNewMenuItem_19.setMnemonic('P');
+		
+		//删除
+		JMenuItem mntmNewMenuItem_20 = new JMenuItem("删除(D)");
+		mntmNewMenuItem_20.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String string=textArea.getText().toString();
+				textArea.setText(string.substring(0,textArea.getSelectionStart()));//删除选中的文本
+			}
+		});
+		mntmNewMenuItem_20.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_20);
+		mntmNewMenuItem_20.setMnemonic('D');
+		
+		JSeparator separator_1 = new JSeparator();
+		popupMenu_1.add(separator_1);
+		
+		//全选
+		JMenuItem mntmNewMenuItem_21 = new JMenuItem("全选(A)");
+		mntmNewMenuItem_21.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				textArea.selectAll();//选中文本区中的所有内容
+			}
+		});
+		mntmNewMenuItem_21.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		popupMenu_1.add(mntmNewMenuItem_21);
+		mntmNewMenuItem_21.setMnemonic('A');
+
+//查看菜单
+		JMenu mnNewMenu_3 = new JMenu("查看(V)");
+		mnNewMenu_3.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		menuBar.add(mnNewMenu_3);
+		
+   //"状态栏"功能
+		JCheckBoxMenuItem chckbxmntmNewCheckItem_1 = new JCheckBoxMenuItem("状态栏(S)");
+		JToolBar toolBar=new JToolBar();//创建工具栏
+		toolBar.setSize(textArea.getSize().width,12);
+		getContentPane().add(toolBar,BorderLayout.SOUTH);
+		Date timeDate=new Date(System.currentTimeMillis());//创建时间
+		Label label_1=new Label("时间:"+timeDate);//时间
+		Label label_2=new Label("第"+line+"行，第"+colum+"列");//状态
+		Label label_3=new Label("共计"+length+"字");//字数统计
+		toolBar.add(label_1);
+		toolBar.addSeparator();
+		toolBar.add(label_2);
+		toolBar.addSeparator();
+		toolBar.add(label_3);
+		textArea.addCaretListener(new CaretListener() {
+			public void caretUpdate(CaretEvent e) {
+				try { int position=textArea.getCaretPosition();
+			       	  int set=e.getDot();
+				      line=textArea.getLineOfOffset(e.getDot());
+				      colum=e.getDot() - textArea.getLineStartOffset(line);
+				      label_2.setText("第"+(line+1)+"行，第"+(colum+1)+"列");
+				      length=textArea.getText().replaceAll("\\s+", "").length();
+				      label_3.setText("共计"+length+"字");
+				} catch (Exception e1) {}	
+			}
+	});
+		toolBar.setVisible(true);
+		toolBar.setFloatable(false);
+		label_1.setVisible(true);
+		label_2.setVisible(true);
+	    label_3.setVisible(true);
+		chckbxmntmNewCheckItem_1.setState(true);
+		chckbxmntmNewCheckItem_1.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if(chckbxmntmNewCheckItem_1.getState()) {
+					label_2.setVisible(true);
+				    label_3.setVisible(true);
+				}
+				  else {
+					label_2.setVisible(false);
+				    label_3.setVisible(false);
+			}
+		}
+	});
+		chckbxmntmNewCheckItem_1.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_3.add(chckbxmntmNewCheckItem_1);
+		chckbxmntmNewCheckItem_1.setMnemonic('S');
+
+//帮助菜单
+		JMenu mnNewMenu_4 = new JMenu("帮助(H)");
+		mnNewMenu_4.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		menuBar.add(mnNewMenu_4);
+		
+   //"查看帮助"功能
+		JMenuItem mntmNewMenuItem_13 = new JMenuItem("查看帮助(H)");
+		mntmNewMenuItem_13.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				JFrame frame_2=new JFrame("查看帮助");
+				frame_2.setLocation(200, 50);
+				frame_2.setSize(800,500);
+				frame_2.setVisible(true);
+				frame_2.setBackground(Color.LIGHT_GRAY);
+				JLabel label_5=new JLabel();
+				frame_2.add(label_5);
+				label_5.setText("<html>记事本帮助<br>小玉记事本共有5个大的菜单项目，总计19余个子功能<br>菜单一“文件”<br>//“新建”功能：鼠标点击新建按钮"
+						+ "，立即清空记事本中所有内容(不做保存)。快捷键：Ctrl+N<br>//“打开”功能：鼠标点击打开按钮，弹出文件选择器窗口，可打开本地文件。"
+						+ "文件类型分为文本文件和所有文件。快捷键:Ctrl+O<br>//“保存”功能：鼠标点击保存按钮，弹出文件选择窗口，选择保存路径并命名即可保存。快捷键："
+						+ "Ctrl+S<br>//“另存为”功能：鼠标点击另存为按钮，，弹出文件选择窗口，选择保存路径并命名即可保存。快捷键：Ctrl+Shift+S<br>//“退出”"
+						+ "功能：鼠标点击退出按钮，立即关闭记事本窗口(不做保存)。<br>菜单二“编辑”<br>//“撤销”功能：鼠标点击撤销按钮，撤销上一步操作。快捷键：Ctrl+Z"
+						+ "<br>//“恢复”功能：鼠标点击回复按钮，恢复上一步撤销的操作。<br>//“剪切”功能：鼠标选中文本，点击剪切按钮，即可剪切文本，再点击粘贴按钮，即可"
+						+ "将剪切下来的文本粘贴在光标的位置之后。快捷键：Ctrl+X<br>//“复制”功能：鼠标选中文本，点击复制按钮，即可复制文本，再点击粘贴按钮，即可将选中"
+						+ "的文本粘贴在光标的位置之后。快捷键：Ctrl+C<br>//“粘贴”功能：鼠标点击粘贴按钮，将剪切或复制的文本粘贴在光标的位置之后。快捷键：Ctrl+V<br>"
+						+ "//“全选”功能：鼠标点击全选按钮，选中文本框中的所有内容。快捷键：Ctrl+A<br>//“删除”功能：鼠标选中文本，点击删除按钮，即可删除所选中的内容。<br>"
+						+ "菜单三“格式”<br>//“自动换行”功能：鼠标勾选自动换行按钮，当文本行溢出记事本框时自动换行。<br>//“背景颜色”功能：鼠标移动至背景颜色菜单上，将会"
+						+ "打开子菜单，点击所需设置颜色的按钮，即可改变文本区颜色(初始颜色为白色)。<br>//“字体颜色”功能：鼠标移动至字体颜色菜单上，将会打开子菜单，点击所需"
+						+ "设置颜色的按钮，即可改变输入文本的颜色(初始颜色为黑色)。<br>菜单四“查看”<br>//“状态栏”功能：鼠标取消状态栏按钮，记事本下方显示行、列数、总共"
+						+ "字数将会消失，时间显示不变(初始状态为选中)。<br>菜单五“帮助”<br>//“查看帮助”功能：鼠标点击查看帮助按钮，将弹出小玉记事本的使用帮助，功能简介等。"
+						+ "<br>//“关于记事本”功能：鼠标点击关于记事本按钮，将弹出小玉记事本的作者信息以及留言。<br>“快捷菜单”功能：鼠标右键点击文本框任意位置，将弹出"
+						+ "快捷编辑菜单。");
+				label_5.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 12));
+			}
+		});
+		mntmNewMenuItem_13.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_4.add(mntmNewMenuItem_13);
+		mntmNewMenuItem_13.setMnemonic('H');
+
+   //"关于记事本"功能
+		JMenuItem mntmNewMenuItem_14 = new JMenuItem("关于记事本(A)");
+		mntmNewMenuItem_14.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				JFrame frame_1=new JFrame("关于记事本");
+				frame_1.setLocation(200, 50);
+				frame_1.setSize(500,500);
+				frame_1.setVisible(true);
+				JLabel label_4=new JLabel("<html>————————————欢迎使用小玉的记事本————————————	<br>小玉的邮箱：1751012123@qq.com "
+						+ "如有错误，还请老师斧正<br>吴小玉 信管1班 202025710123</html>");
+				label_4.setHorizontalAlignment(SwingConstants.CENTER);
+			    frame_1.getContentPane().add(label_4);
+			}
+		});
+		mntmNewMenuItem_14.setFont(new Font("Microsoft YaHei UI", Font.PLAIN, 14));
+		mnNewMenu_4.add(mntmNewMenuItem_14);
+		mntmNewMenuItem_14.setMnemonic('A');
+
+		}
+	
+	private static void addPopup(Component component, final JPopupMenu popup) {
+		component.addMouseListener(new MouseAdapter() {
+			public void mousePressed(MouseEvent e) {
+				if (e.isPopupTrigger()) {
+					showMenu(e);
+				}
+			}
+			public void mouseReleased(MouseEvent e) {
+				if (e.isPopupTrigger()) {
+					showMenu(e);
+				}
+			}
+			private void showMenu(MouseEvent e) {
+				popup.show(e.getComponent(), e.getX(), e.getY());
+			}
+		});
+	}
+	}