diff --git a/src/java2020spring/About.java b/src/java2020spring/About.java
new file mode 100644
index 0000000000000000000000000000000000000000..d7e3516abcfa12fd62de52f933e3d587308d5a6f
--- /dev/null
+++ b/src/java2020spring/About.java
@@ -0,0 +1,21 @@
+package java2020spring;
+import java.awt.Container;
+import java.awt.GridLayout;
+
+import javax.swing.*;
+public class About extends JFrame{
+public About() {
+	super("关于记事本");
+	this.setSize(300,170);
+	this.setLocation(250,300);
+    this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+	this.setVisible(true);
+	Container b=this.getContentPane();
+	b.setLayout(new GridLayout(2,0));
+	JLabel label1=new JLabel("        这是一个用Java开发的文本编辑器    ");
+	JLabel label2=new JLabel("        Copyright @2021 戴嘉如") ;
+	b.add(label1);
+	b.add(label2);
+
+}
+}
diff --git a/src/java2020spring/AreaListener.java b/src/java2020spring/AreaListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..c84a18f3a0d7945390ef010721f817b7aa917395
--- /dev/null
+++ b/src/java2020spring/AreaListener.java
@@ -0,0 +1,45 @@
+package java2020spring;
+
+import java.awt.BorderLayout;
+import java.awt.GridLayout;
+
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JTextArea;
+import javax.swing.event.CaretEvent;
+import javax.swing.event.CaretListener;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.text.BadLocationException;
+
+
+	public class AreaListener implements CaretListener{
+		JTextArea area =new JTextArea();
+		JLabel label1,label2,label3;
+		public void setarea(JTextArea text) {
+			area=text;
+		}
+		public void setlabel(JLabel la1,JLabel la2,JLabel la3) {
+			label1=la1;
+			label2=la2;
+			label3=la3;
+		}
+		public void caretUpdate(CaretEvent e) {
+		
+			int c=area.getCaretPosition();
+			int line=0,co1=0;
+		try {
+			
+			 line = area.getLineOfOffset(c)+1;
+			 co1=c-area.getLineStartOffset(line-1);     
+		}
+		catch (BadLocationException e1) {
+			e1.printStackTrace();
+		}
+		  	 
+		  	label1.setText("第"+line+"行");
+		  	label2.setText("第"+co1+"列");
+		  	label3.setText("字数："+number.getnumber(area.getText()));
+		
+		}
+		}
diff --git a/src/java2020spring/Help.java b/src/java2020spring/Help.java
new file mode 100644
index 0000000000000000000000000000000000000000..0ff8f8c278f41acfa923fb468a1386f9018cc1d9
--- /dev/null
+++ b/src/java2020spring/Help.java
@@ -0,0 +1,27 @@
+package java2020spring;
+import javax.swing.*;
+import java.awt.*;
+
+public class Help extends JFrame{
+	public Help() {
+		super("帮助");
+		this.setSize(500,170);
+		this.setLocation(250,300);
+	    this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+		this.setVisible(true);
+		Container a=this.getContentPane();
+		a.setLayout(new GridLayout(5,0));
+		JLabel label1=new JLabel("   1、可通过点击“文件”中的菜单项打开或保存相应文件。");
+		JLabel label2=new JLabel("   2、可通过点击“编辑”中的菜单项对文本区域的文本进行相应操作");
+	    JLabel label3=new JLabel("   3、可通过勾选或者取消勾选“格式”中的“自动换行”，来打开或关闭自动换行功能");
+	    JLabel label4=new JLabel("   4、可通过勾选或者取消勾线“查看”中的“状态栏”，来打开或者关闭编辑器底部的状态栏,");
+	    JLabel label5=new JLabel("   状态栏中分别显示光标所处的行、列情况和文本字数");
+	    a.add(label1);
+	    a.add(label2);
+	    a.add(label3);
+	    a.add(label4);
+	    a.add(label5);
+	    
+	    
+	}
+}
diff --git a/src/java2020spring/Test.java b/src/java2020spring/Test.java
index fc09c195f566d0e707f5e8a2f05fd168069c73a7..ff8b4fcab15644d90373295676fe4370ff9886c8 100644
--- a/src/java2020spring/Test.java
+++ b/src/java2020spring/Test.java
@@ -1,10 +1,347 @@
 package java2020spring;
+import java.awt.*;
+import java.io.*;
+import javax.swing.*;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.text.BadLocationException;
+import javax.swing.undo.*;
+import java.awt.event.*;
 
-public class Test {
+public class Test extends JFrame {
+	Test()
+	{
+	super("文本编辑器");
+	JMenuBar  menubar =new JMenuBar();
+	JMenu menu1,menu2,menu3,menu4,menu5;
+	JMenuItem item11,item12,item13,item14,item15,item21,item22,item23,item24,item25,
+	item26,item51,item52,item221,item222,item223,item224,item225,item226;
+	this.setJMenuBar(menubar);
+	menu1=new JMenu("文件");
+	menu2=new JMenu("编辑");
+	menu3=new JMenu("格式");
+	menu4=new JMenu("查看");
+	menu5=new JMenu("帮助");
+	
+	item11=new JMenuItem("新建(N)",KeyEvent.VK_N);
+	item11.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,ActionEvent.CTRL_MASK));
+	item12=new JMenuItem("打开(O)",KeyEvent.VK_O);
+	item12.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,ActionEvent.CTRL_MASK));
+	item13=new JMenuItem("保存(S)",KeyEvent.VK_S);
+	item13.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,ActionEvent.CTRL_MASK));
+	item14=new JMenuItem("另存为(A)",KeyEvent.VK_A);
+	item14.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,ActionEvent.CTRL_MASK));
+	item15=new JMenuItem("退出(X)",KeyEvent.VK_X);
+	item21=new JMenuItem("撤销(U)",KeyEvent.VK_Z);
+	item21.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,ActionEvent.CTRL_MASK));
+	item22=new JMenuItem("剪切(T)",KeyEvent.VK_X);
+	item22.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,ActionEvent.CTRL_MASK));
+	item23=new JMenuItem("复制(C)",KeyEvent.VK_C);
+	item23.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,ActionEvent.CTRL_MASK));
+	item24=new JMenuItem("粘贴(P)",KeyEvent.VK_V);
+	item24.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,ActionEvent.CTRL_MASK));
+	item25=new JMenuItem("删除(L)",KeyEvent.VK_DELETE);
+	item26=new JMenuItem("恢复(R)",KeyEvent.VK_Q);
+	item26.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,ActionEvent.CTRL_MASK));
+	JCheckBoxMenuItem item31 = new JCheckBoxMenuItem("自动换行(W)");
+	JCheckBoxMenuItem item41 = new JCheckBoxMenuItem("状态栏");
+	item51=new JMenuItem("查看帮助(H)");
+	item52=new JMenuItem("关于记事本(A)");
+	item221=new JMenuItem("撤销(U)",KeyEvent.VK_Z);
+	item221.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,ActionEvent.CTRL_MASK));
+	item222=new JMenuItem("剪切(T)",KeyEvent.VK_X);
+	item222.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,ActionEvent.CTRL_MASK));
+	item223=new JMenuItem("复制(C)",KeyEvent.VK_C);
+	item223.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,ActionEvent.CTRL_MASK));
+	item224=new JMenuItem("粘贴(P)",KeyEvent.VK_V);
+	item224.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,ActionEvent.CTRL_MASK));
+	item225=new JMenuItem("删除(L)",KeyEvent.VK_DELETE);
+	item226=new JMenuItem("恢复(R)",KeyEvent.VK_Q);
+	item226.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,ActionEvent.CTRL_MASK));
+	menu1.add(item11);
+	menu1.add(item12);
+	menu1.add(item13);
+	menu1.add(item14);
+	menu1.addSeparator();
+	menu1.add(item15);
+	menu2.add(item221);
+	menu2.add(item226);
+	menu2.addSeparator();
+	menu2.add(item222);
+	menu2.add(item223);
+	menu2.add(item224);
+	menu2.add(item225);
+	menu3.add(item31);
+	menu4.add(item41);
+	menu5.add(item51);
+	menu5.add(item52);
+	menubar.add(menu1);
+	menubar.add(menu2);
+	menubar.add(menu3);
+	menubar.add(menu4);
+	menubar.add(menu5);
+	
+	JTextArea workArea=new JTextArea();
+	JScrollPane pane =new JScrollPane(workArea);
+	add(pane,BorderLayout.CENTER);
+	
+	FileDialog open =new FileDialog(this,"打开",FileDialog.LOAD);
+	FileDialog save=new FileDialog(this,"另存为",FileDialog.SAVE);
+	item11.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			workArea.setText("");
+		}
+	});
+	item12.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+		open.setVisible(true);
+		String dirPath=open.getDirectory();
+		String fileName=open.getFile();
+		if(dirPath==null||fileName==null) {
+			return;
+		}
+		workArea.setText("");
+		File file0=new File(dirPath,fileName);
+		try {
+			BufferedReader buff=new BufferedReader(new FileReader(file0));
+			String str=null;
+			while((str=buff.readLine())!=null) {
+				workArea.append(str+"\r\n");
+			}
+			buff.close();
+		}
+		catch(IOException e1) {
+			throw new RuntimeException("文件读取失败！");
+		}}
+	});
+	item13.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			File file1=null;
+			if(file1==null) {
+				save.setVisible(true);
+				String dirPath=save.getDirectory();
+				String fileName=save.getFile();
+				if(dirPath==null||fileName==null)
+					return;
+				file1=new File(dirPath,fileName);
+				try {
+					BufferedWriter buff=new BufferedWriter(new FileWriter(file1));
+					String text=workArea.getText();
+					buff.write(text);
+					buff.close();
+				}
+				catch(IOException e1) {
+					throw new RuntimeException("文件保存失败！");
+				}
+			}
+		}
+	});
+	item14.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			File file2=null;
+			if(file2==null) {
+				save.setVisible(true);
+				String dirPath=save.getDirectory();
+				String fileName=save.getFile();
+				if(dirPath==null||fileName==null)
+					return;
+				file2=new File(dirPath,fileName);
+				try {
+					BufferedWriter buff=new BufferedWriter(new FileWriter(file2));
+					String text=workArea.getText();
+					buff.write(text);
+					buff.close();
+				}
+				catch(IOException e1) {
+					throw new RuntimeException("文件另存为失败！");
+				}
+			}
+		}
+	});
+	item15.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			System.exit(0);
+		}
+	});
+	item22.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.cut();
+		}
+	});
+	item23.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.copy();
+		}
+	});
+	item24.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.paste();
+		}
+	});
+	
+	
+	UndoManager undoandreco=new UndoManager();
+	workArea.getDocument().addUndoableEditListener(undoandreco);
+	item21.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			if(undoandreco.canUndo())
+				undoandreco.undo();
+		else {
+			JOptionPane.showMessageDialog(null, "无法撤销","警告",JOptionPane.WARNING_MESSAGE);
+		}
+	}});
+	
 
-	public static void main(String[] args) {
-		System.out.println("Hello world!");
+	workArea.getDocument().addUndoableEditListener(undoandreco);
+	item26.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			if(undoandreco.canRedo())
+				undoandreco.redo();
+		else {
+			JOptionPane.showMessageDialog(null, "无法恢复","警告",JOptionPane.WARNING_MESSAGE);
+		}
+	}});
+	
+	item25.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.setText("");
+		}
+	});
 
+	
+	
+	
+	
+	item222.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.cut();
+		}
+	});
+	item223.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.copy();
+		}
+	});
+	item224.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.paste();
+		}
+	});
+	
+	workArea.getDocument().addUndoableEditListener(undoandreco);
+	item221.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			if(undoandreco.canUndo())
+				undoandreco.undo();
+		else {
+			JOptionPane.showMessageDialog(null, "无法撤销","警告",JOptionPane.WARNING_MESSAGE);
+		}
+	}});
+	
+	workArea.getDocument().addUndoableEditListener(undoandreco);
+	item226.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			if(undoandreco.canRedo())
+				undoandreco.redo();
+		else {
+			JOptionPane.showMessageDialog(null, "无法恢复","警告",JOptionPane.WARNING_MESSAGE);
+		}
+	}});
+	
+	item225.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+			workArea.setText("");
+		}
+	});
+	
+	
+	
+	item31.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+		if(item31.getState()==true)
+				workArea.setLineWrap(true);                  
+		else
+			workArea.setLineWrap(false);
+		}
+	});
+	
+	AreaListener areaListener=new AreaListener();
+	JPanel pane2=new JPanel();
+	pane2.setLayout(new GridLayout(1,5));
+	JLabel label1=new JLabel("第1行");
+	JLabel label2=new JLabel("第1列");
+	JLabel label3=new JLabel("字数：0");
+	pane2.add(label1);
+	pane2.add(label2);
+	pane2.add(label3);
+	add(pane2,BorderLayout.SOUTH);
+	areaListener.setlabel(label1, label2, label3);
+	areaListener.setarea(workArea);
+	workArea.addCaretListener(areaListener);
+	item41.setState(true);
+	item41.addActionListener(new ActionListener () {
+		public void actionPerformed(ActionEvent e) {
+		if(item41.getState()==true)
+				pane2.setVisible(true);
+		else if(item41.getState()==false)
+			pane2.setVisible(false);
+		}
+	});
+	item51.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			new Help();
+		}
+	});
+	item52.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			new About();
+		}
+	});
+	
+	JPopupMenu pop=new JPopupMenu();
+	pop.add(item21);
+	pop.add(item26);
+	pop.addSeparator();
+	pop.add(item22);
+	pop.add(item23);
+	pop.add(item24);
+	pop.add(item25);
+	workArea.addMouseListener(new mouselistener(pop));
+	
+	
+   
 	}
+              
 
+
+	
+public static void main(String arg[]) {
+	Test test=new Test();
+	test.setBounds(200,200,600,400);
+	test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+	test.setVisible(true);
+	
+}}
+
+class mouselistener implements MouseListener{
+	JPopupMenu pop2;
+	mouselistener(JPopupMenu pop1){
+		pop2=pop1;
+	}
+	public void display(MouseEvent e) {
+		if(e.isPopupTrigger())
+			pop2.show(e.getComponent(),e.getX(),e.getY());
+	}
+	public void mouseReleased(MouseEvent e) {
+		this.display(e);
+	}
+public void mouseEntered(MouseEvent e) {}
+
+public void mouseClicked(MouseEvent e) {}
+
+public void mousePressed(MouseEvent e) {}
+
+public void mouseExited(MouseEvent e) {}
 }
+    
+
diff --git a/src/java2020spring/number.java b/src/java2020spring/number.java
new file mode 100644
index 0000000000000000000000000000000000000000..a2947fe4d1fd9e08f61994691b399fa1ff45d26d
--- /dev/null
+++ b/src/java2020spring/number.java
@@ -0,0 +1,14 @@
+package java2020spring;
+
+public class number {
+	public static int getnumber(String str) {
+		String dest="";
+		if(str!=null) {
+			str=str.replaceAll("[\\pP‘’“”]", "");
+			dest=str.replaceAll("\\s*|\t|\r|\n","");
+		}
+				return dest.length();
+	}
+}
+
+