diff --git a/src/java2020spring/CalculatorFrame.java b/src/java2020spring/CalculatorFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..228d99e1501edf34aecf27efd409d7e8ea480998
--- /dev/null
+++ b/src/java2020spring/CalculatorFrame.java
@@ -0,0 +1,252 @@
+package java2020spring;
+import javax.swing.*;
+import java.awt.event.*;
+import java.math.BigDecimal;
+
+public class CalculatorFrame extends JFrame implements ActionListener {
+	int i=0,ii=0;
+	double num1=0,num2=0;
+	double iii=10.0,memory;
+	JTextField tf;
+	public void actionPerformed(ActionEvent e) {
+		String str=e.getActionCommand();
+		if(e.getActionCommand().equals("0")) {
+			sca(0);
+		}
+		else if(e.getActionCommand().equals("1")) {
+			sca(1);
+		}
+		else if(e.getActionCommand().equals("2")) {
+			sca(2);
+		}
+		else if(e.getActionCommand().equals("3")) {
+			sca(3);
+		}
+		else if(e.getActionCommand().equals("4")) {
+			sca(4);
+		}
+		else if(e.getActionCommand().equals("5")) {
+			sca(5);
+		}
+		else if(e.getActionCommand().equals("6")) {
+			sca(6);
+		}
+		else if(e.getActionCommand().equals("7")) {
+			sca(7);
+		}
+		else if(e.getActionCommand().equals("8")) {
+			sca(8);
+		}
+		else if(e.getActionCommand().equals("9")) {
+			sca(9);
+		}
+		else if(e.getActionCommand().equals("MR")) {
+			solveMr();
+		}
+		else if(e.getActionCommand().equals("MC")) {
+			solveMc();
+		}
+		else if(e.getActionCommand().equals("M+")) {
+			solveM1();
+		}
+		else if(e.getActionCommand().equals("M-")) {
+			solveM2();
+		}
+		else if(e.getActionCommand().equals("+")) {
+			this.i=1;
+			tf.setText("");
+			calcu(this.num1,this.num2,this.i);
+			this.num2=0;
+			ii=0;
+			this.iii=10.0;
+		}
+		else if(e.getActionCommand().equals("-")) {
+			this.i=2;
+			tf.setText("");
+			calcu(this.num1,this.num2,this.i);
+			this.num2=0;
+			ii=0;
+			this.iii=10.0;
+		}
+		else if(e.getActionCommand().equals("X")) {
+			this.i=3;
+			tf.setText("");
+			ii=0;
+			this.iii=10.0;
+		}
+		else if(e.getActionCommand().equals("÷")) {
+			this.i=4;
+			tf.setText("");
+			ii=0;
+			this.iii=10.0;
+		}
+		else if(e.getActionCommand().equals("%")) {
+			this.i=5;
+			tf.setText("");
+			calcu(this.num1,this.num2,this.i);
+			ii=0;
+			this.iii=10.0;
+		}
+	    else if(e.getActionCommand().equals("=")) {
+		    calcu(this.num1,this.num2,this.i);
+		    this.num2=0;
+		    this.i=0;
+		    this.iii=10.0;
+		    ii=0;
+		}
+		else if(e.getActionCommand().equals("root")) {
+			this.num1=Math.sqrt(this.num1);
+			tf.setText(String.valueOf(num1));
+		}
+		else if(e.getActionCommand().equals("cube")) {
+			this.num1=Math.pow(this.num1,1.0/3);
+			tf.setText(String.valueOf(num1));
+		}
+		else if(e.getActionCommand().equals(".")) {
+			ii=1;
+		}
+		else if(e.getActionCommand().equals("sin")) {
+			this.num1=Math.sin(this.num1);
+			tf.setText(String.valueOf(num1));
+		}
+		else if(e.getActionCommand().equals("cos")) {
+			this.num1=Math.cos(this.num1);
+			tf.setText(String.valueOf(num1));
+		}
+		else if(e.getActionCommand().equals("tan")) {
+			this.num1=Math.tan(this.num1);
+			tf.setText(String.valueOf(num1));
+		}
+		else if(e.getActionCommand().equals("C")) {
+			tf.setText("");
+			this.num1=0;
+			this.num2=0;
+			this.i=0;
+			ii=0;
+			iii=10.0;
+		}
+		else if(e.getActionCommand().equals("←")) {
+			int len=tf.getText().length();
+			if(len==0) {
+				tf.setText("");
+			}
+			else
+				tf.setText(tf.getText().substring(0,len-1));
+		}
+	
+	
+	}
+	@SuppressWarnings("deprecation")
+	public void sca(int m) {
+		int len1=tf.getText().length();
+		String str1;
+		if(this.i==0) {
+			if(ii==0) {
+				if(len1<9) {
+				this.num1=this.num1*10+m;
+				tf.setText(String.valueOf((int)this.num1));
+				}
+			else {
+				str1="字数超出限制";
+				tf.setText(str1);
+			}
+			}
+			else {
+				double n;
+				n=(double)m/iii;
+				iii=iii*10;
+				this.num1+=n;
+				BigDecimal Bd=new BigDecimal(this.num1);
+				double sc=Bd.setScale(9,BigDecimal.ROUND_HALF_DOWN).doubleValue();
+				tf.setText(String.valueOf(sc));
+			}
+			
+		}
+		else {
+			if(ii==0) {
+				if(len1<9) {
+					this.num2=this.num2*10+m;
+					tf.setText(String.valueOf((int)this.num2));
+					}
+				else {
+					str1="字数超出限制";
+					tf.setText(str1);
+				}
+			}
+			else {
+				
+				double n;
+				n=(double)m/iii;
+				iii=iii*10;
+				this.num2+=n;
+				BigDecimal Bd=new BigDecimal(this.num2);
+				double sc=Bd.setScale(9,BigDecimal.ROUND_HALF_DOWN).doubleValue();
+				tf.setText(String.valueOf(sc));
+			}
+			
+		}
+	}
+	  
+       public void solveMr() {
+    	   this.num1=this.memory;
+    	   tf.setText(String.valueOf(num1));
+       }
+       public void solveMc() {
+    	   this.iii=10.0;
+    	   this.memory=0;
+    	   tf.setText(String.valueOf(memory));
+       }
+       public void solveM1() {
+    	   this.memory-=this.num1;
+    	   if(this.memory!=0) {
+    		   tf.setText("M");
+    	   }
+    	   else
+    		   tf.setText("");
+       }
+       public void solveM2() {
+    	   this.memory+=this.num1;
+    	   if(this.memory!=0) {
+    		   tf.setText("M");
+    	   }
+    	   else
+    		   tf.setText("");
+       }
+       public void calcu(double a,double b,int i) {
+    	   double result=0;
+    	   int str2=0;
+    	   String str1;
+    	   switch(i){
+    	   case 0:
+    	   case 1:result=a+b;break;
+    	   case 2:result=a-b;break;
+    	   case 3:result=a*b;break;
+    	   case 4:if(b!=0)result=a/b;
+    	          else{
+	        	  str2=1;
+	              }
+    	          break;
+    	   case 5:result=a/100;
+    	   }
+    	   if(str2==0) {
+    	   double n1=result;
+    	   int n2=(int)n1;
+    	   double n3=(double)n2;
+    	   if(n3==result) 
+    		   tf.setText(String.valueOf(n2));
+    	   else 
+    		   tf.setText(String.valueOf(result));
+    	   this.num1=result;
+    	   }
+    	   else {
+    		   str1="注意！除数不可为零！";
+    		   tf.setText(str1);
+    	   }
+       }
+	public void setJTextField(JTextField t) {
+	    tf=t;
+		
+	}
+	}
+	
+		
\ No newline at end of file
diff --git a/src/java2020spring/MainFrame.java b/src/java2020spring/MainFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..d11239058c0b9e17afb7dbc84200f1f3797256be
--- /dev/null
+++ b/src/java2020spring/MainFrame.java
@@ -0,0 +1,8 @@
+package java2020spring;
+
+public class MainFrame {
+	public static void main(String args[]) {
+		new WindowFrame();
+		
+	}
+}
diff --git a/src/java2020spring/MenuFrame.java b/src/java2020spring/MenuFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..edead74ead8af0565b5fdf25fb93f1374b0e1415
--- /dev/null
+++ b/src/java2020spring/MenuFrame.java
@@ -0,0 +1,41 @@
+package java2020spring;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+
+public class MenuFrame extends JFrame implements ActionListener {
+	String str;
+	JTextPane area=new JTextPane();
+	MenuFrame(JFrame g){
+		this.setBounds(200,200,400,400);
+		this.add(area);
+		this.setTitle("");
+		area.setFont(new Font("华文楷体",Font.BOLD,21));
+		
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+		
+	}
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		str=e.getActionCommand();
+		if(str.equals("请仔细阅读")) {
+			String s="1.因作者能力有限，无法实现连乘或连除功能，只能中间使用等于号实现得数与新的数字相乘\n2.除了加减法外，其余运算每运算一次请点击=，以得出准确结果\n3.每次运算后，若要重新运算新的数字，请记得点C清零\n4.感谢您的使用！";
+			area.setText(s);
+			area.setEditable(false);
+		}
+		else if(str.equals("作者基本信息")) {
+			String s="姓名：孔清妹\n班级：20级信管2班\n";
+			area.setText(s);
+			area.setEditable(false);
+		
+		}
+		else if(str.equals("帮助内容")) {
+			String s="作者时间有限，此功能正在开发中\n如遇问题请参考“须知”\n实在不行，可进行拨打10086投诉作者\n不过作者还是希望不要投诉，作者正在努力！";
+			area.setText(s);
+			area.setEditable(false);
+		
+		}
+		this.setVisible(true);
+	}
+	
+}
diff --git a/src/java2020spring/WindowFrame.java b/src/java2020spring/WindowFrame.java
new file mode 100644
index 0000000000000000000000000000000000000000..0bba8878731c17bac0e5220a6588b2c804459d1b
--- /dev/null
+++ b/src/java2020spring/WindowFrame.java
@@ -0,0 +1,245 @@
+package java2020spring;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+public class WindowFrame extends JFrame{
+	    JTextField tf=new JTextField();
+	    String s=(String)(tf.getText());
+	    JPanel panel1=new JPanel();
+		JPanel panel2=new JPanel(new GridLayout(7,4));
+		JMenu menu1,menu2,menu3;
+		JMenuItem item1,item2,item3;
+		JMenuBar menubar;
+		
+		JButton buttonJia=new JButton("+");
+		JButton buttonJian=new JButton("-");
+		JButton buttonCheng=new JButton("X");
+		JButton buttonChu=new JButton("÷");
+		JButton buttonZero=new JButton("0");
+		JButton button1=new JButton("1");
+		JButton button2=new JButton("2");
+		JButton button3=new JButton("3");
+		JButton button4=new JButton("4");
+		JButton button5=new JButton("5");
+		JButton button6=new JButton("6");
+		JButton button7=new JButton("7");
+		JButton button8=new JButton("8");
+		JButton button9=new JButton("9");
+		JButton buttonYu=new JButton("%");
+		JButton buttonCube=new JButton("cube");
+		JButton buttonDian=new JButton(".");
+		JButton buttonQingchu=new JButton("C");
+		JButton buttonDengyu=new JButton("=");
+		JButton buttonRoot=new JButton("root");
+		JButton buttonMc=new JButton("MC");
+		JButton buttonMr=new JButton("MR");
+		JButton buttonM1=new JButton("M-");
+		JButton buttonM2=new JButton("M+");
+		JButton buttonSin=new JButton("sin");
+		JButton buttonCos=new JButton("cos");
+		JButton buttonTan=new JButton("tan");
+		JButton buttonBack=new JButton("←");
+		WindowFrame(){
+			addButton();
+			setCommand();
+			
+		}
+		public void addButton() {
+			
+			tf.setPreferredSize(new Dimension(350,100));
+			tf.setFont(new Font("华文行楷",Font.PLAIN,30));
+			Font font1=new Font("华文楷体",Font.BOLD,33);
+			Font font2=new Font("华文隶书",Font.BOLD,33);
+			buttonZero.setFont(font1);
+			button1.setFont(font1);
+			button2.setFont(font1);
+			button3.setFont(font1);
+			button4.setFont(font1);
+			button5.setFont(font1);
+			button6.setFont(font1);
+			button7.setFont(font1);
+			button8.setFont(font1);
+			button9.setFont(font1);
+			buttonJia.setFont(font1);
+			buttonJian.setFont(font1);
+			buttonCheng.setFont(font1);
+			buttonChu.setFont(font1);
+			buttonYu.setFont(font1);
+			buttonDian.setFont(font1);
+			buttonDengyu.setFont(font1);
+			buttonQingchu.setFont(font2);
+			buttonMc.setFont(font2);
+			buttonMr.setFont(font2);
+			buttonM1.setFont(font2);
+			buttonM2.setFont(font2);
+			buttonSin.setFont(font2);
+			buttonCos.setFont(font2);
+			buttonTan.setFont(font2);
+			buttonBack.setFont(font2);
+			buttonCube.setFont(font2);
+			buttonRoot.setFont(font2);
+			
+			panel1.add(tf);
+			this.add(panel1,BorderLayout.NORTH);
+			tf.setBackground(Color.white);
+			
+			buttonMc.setForeground(Color.PINK);
+			buttonMr.setForeground(Color.PINK);
+			buttonM1.setForeground(Color.PINK);
+			buttonM2.setForeground(Color.PINK);
+			buttonSin.setForeground(Color.PINK);
+			buttonCos.setForeground(Color.PINK);
+			buttonTan.setForeground(Color.PINK);
+			buttonQingchu.setForeground(Color.PINK);
+			buttonCube.setForeground(Color.PINK);
+			buttonRoot.setForeground(Color.PINK);
+			buttonBack.setForeground(Color.PINK);
+			buttonJia.setForeground(Color.RED);
+			buttonJian.setForeground(Color.RED);
+			buttonCheng.setForeground(Color.RED);
+			buttonChu.setForeground(Color.RED);
+			buttonYu.setForeground(Color.RED);
+			buttonDengyu.setBackground(Color.GREEN);
+			buttonDian.setForeground(Color.RED);
+			
+			
+			
+			panel2.add(buttonMc);
+			panel2.add(buttonM1);
+			panel2.add(buttonM2);
+			panel2.add(buttonMr);
+			
+			panel2.add(buttonQingchu);
+			panel2.add(buttonCheng);	
+			panel2.add(buttonChu);
+			panel2.add(buttonBack);
+			
+			panel2.add(buttonSin);
+			panel2.add(buttonCos);
+			panel2.add(buttonTan);
+			panel2.add(buttonDengyu);
+			
+			panel2.add(button7);
+			panel2.add(button8);
+			panel2.add(button9);
+			panel2.add(buttonJian);
+			
+			panel2.add(button4);
+			panel2.add(button5);
+			panel2.add(button6);
+			panel2.add(buttonJia);
+			
+			panel2.add(button1);
+			panel2.add(button2);
+			panel2.add(button3);
+			panel2.add(buttonCube);
+			
+			panel2.add(buttonYu);
+			panel2.add(buttonZero);
+			panel2.add(buttonDian);
+			panel2.add(buttonRoot);
+			
+			inti();
+			this.setTitle("计算器");
+			this.add(panel2,BorderLayout.SOUTH);
+			this.setSize(400,558);
+			this.setLocationRelativeTo(null);
+			this.setVisible(true);
+			this.setResizable(false);
+			this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		}
+		    void inti() {
+		    	menubar=new JMenuBar();
+		    	menu1=new JMenu("须知");
+		    	menu2=new JMenu("查看");
+		    	menu3=new JMenu("帮助");
+		    	item1=new JMenuItem("请仔细阅读");
+		    	item2=new JMenuItem("作者基本信息");
+		    	item3=new JMenuItem("帮助内容");
+		    	menu1.add(item1);
+		    	menu2.add(item2);
+		    	menu3.add(item3);
+		    	menubar.add(menu1);
+		    	menubar.add(menu2);
+		    	menubar.add(menu3);
+		    	setJMenuBar(menubar);
+		    	
+		    	
+		    }
+			public void setCommand() {
+				tf.setEditable(false);
+				buttonZero.setActionCommand("0");
+				button1.setActionCommand("1");
+				button2.setActionCommand("2");
+				button3.setActionCommand("3");
+				button4.setActionCommand("4");
+				button5.setActionCommand("5");
+				button6.setActionCommand("6");
+				button7.setActionCommand("7");
+				button8.setActionCommand("8");
+				button9.setActionCommand("9");
+				buttonJia.setActionCommand("+");
+				buttonJian.setActionCommand("-");
+				buttonCheng.setActionCommand("X");
+				buttonChu.setActionCommand("÷");
+				buttonYu.setActionCommand("%");
+				buttonCube.setActionCommand("cube");
+				buttonDian.setActionCommand(".");
+				buttonQingchu.setActionCommand("C");
+				buttonDengyu.setActionCommand("=");
+				buttonRoot.setActionCommand("root");
+				buttonMc.setActionCommand("MC");
+				buttonMr.setActionCommand("MR");
+				buttonM1.setActionCommand("M+");
+				buttonM2.setActionCommand("M-");
+				buttonSin.setActionCommand("sin");
+				buttonCos.setActionCommand("cos");
+				buttonTan.setActionCommand("tan");
+				buttonBack.setActionCommand("←");
+				
+				
+				CalculatorFrame listener;
+				listener=new CalculatorFrame();
+				listener.setJTextField(tf);
+				tf.setHorizontalAlignment(JTextField.RIGHT);
+				tf.addActionListener(listener);
+				buttonZero.addActionListener(listener);
+				button1.addActionListener(listener);
+				button2.addActionListener(listener);
+				button3.addActionListener(listener);
+				button4.addActionListener(listener);
+				button5.addActionListener(listener);
+				button6.addActionListener(listener);
+				button7.addActionListener(listener);
+				button8.addActionListener(listener);
+				button9.addActionListener(listener);
+				buttonJia.addActionListener(listener);
+				buttonJian.addActionListener(listener);
+				buttonCheng.addActionListener(listener);
+				buttonChu.addActionListener(listener);
+				buttonYu.addActionListener(listener);
+				buttonDian.addActionListener(listener);
+				buttonCube.addActionListener(listener);
+				buttonQingchu.addActionListener(listener);
+				buttonDengyu.addActionListener(listener);
+				buttonRoot.addActionListener(listener);
+				buttonMc.addActionListener(listener);
+				buttonMr.addActionListener(listener);
+				buttonM1.addActionListener(listener);
+				buttonM2.addActionListener(listener);
+				buttonSin.addActionListener(listener);
+				buttonCos.addActionListener(listener);
+				buttonTan.addActionListener(listener);
+				buttonBack.addActionListener(listener);
+				
+				MenuFrame listener2=new MenuFrame(this);
+				item1.addActionListener(listener2);
+				item2.addActionListener(listener2);
+				item3.addActionListener(listener2);
+				
+			}
+			
+		
+		}
+
+