diff --git a/src/java2022spring/Calculator.java b/src/java2022spring/Calculator.java
new file mode 100644
index 0000000000000000000000000000000000000000..7662079d81bd6c150df0ce92c60afc569bee3eb5
--- /dev/null
+++ b/src/java2022spring/Calculator.java
@@ -0,0 +1,564 @@
+package java2022spring;
+
+import java.awt.BorderLayout;
+import java.awt.CardLayout;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.awt.event.WindowListener;
+import java.math.BigDecimal;
+import java.util.Stack;
+import java.util.Vector;
+
+import javax.swing.*;
+public class Calculator  extends JFrame implements ActionListener{
+	private static final long serialVersionUID = -3886402326809142694L;
+	String str1="0",str2="0";
+    String signal="+";
+    String result="";
+    
+    int k1=1;//用于选择输入的方向，将要写入str1或str2
+    int k2=1;//用于记录符号键的次数，k2>1说明进行的是2+7-8+3这样子的多符号运算
+    int k3=1;//用于标识str1是否可以被清0，等于1时可以，不等于1时不可以
+    int k4=1;//用来标识str2是否可以被清0
+    int k5=1;//用来控制小数点可否被录入，等于1时可以。
+    /*
+     * 关于计算逻辑的实现
+     * str1相当于第一个数字按钮，str2相当于第二个数字按钮，如3+4（str1+str2）
+     * k2>1时，进行多符号运算2+3+5 先计算2+3，再+5，所以原来的2+3就要保留，则用k3！=0来标识保留结果
+     * 
+     */
+    
+    JButton store;//定义一个按钮，用于存储之前被按下的符号键
+    @SuppressWarnings("rawtypes")
+    Vector vt = new Vector(20, 10);//v存储之前输入的运算符
+    
+	JFrame frame=new JFrame("计算器");
+	JTextField text=new JTextField();
+	JButton Clear=new JButton();
+	JButton Clear_entry=new JButton();
+	JButton back=new JButton();
+	
+	public Calculator() {
+		
+		
+		JPanel p3=new JPanel();
+
+		
+		JPanel panel=new JPanel();
+		JPanel panelC=new JPanel();
+		CardLayout cardLayout=new CardLayout();
+		  
+		  panelC.setLayout(cardLayout);
+		
+		text.setHorizontalAlignment(JTextField.RIGHT);//设置右对齐；
+	
+		JButton buttonM1 = new JButton("C");
+		JButton buttonM2 = new JButton("Backspace");
+		JButton buttonM3 = new JButton("sqrt");
+		JButton buttonM4 = new JButton("%");
+		
+		JButton buttonM5 = new JButton("7");
+		JButton buttonM6 = new JButton("8");
+		JButton buttonM7= new JButton("9");
+		JButton buttonM8= new JButton("÷");
+		
+		JButton buttonM9= new JButton("4");
+		JButton buttonM10= new JButton("5");
+		JButton buttonM11= new JButton("6");
+		JButton buttonM12= new JButton("×");
+		
+		JButton buttonM13= new JButton("1");
+		JButton buttonM14= new JButton("2");
+		JButton buttonM15= new JButton("3");
+		JButton buttonM16= new JButton("-");
+		
+		JButton buttonM17= new JButton("+");
+		JButton buttonM18= new JButton("0");
+		JButton buttonM19= new JButton(".");
+		JButton buttonM20= new JButton("=");
+		
+		
+	
+		JPanel p1=new JPanel();
+		p1.setLayout(new GridLayout(5,4,5,5));
+		
+		//将按钮添加到p1容器中
+		   p1.add(buttonM1);
+		   p1.add(buttonM2);
+		   p1.add(buttonM3);
+		   p1.add(buttonM4);
+		   p1.add(buttonM5);
+		   p1.add(buttonM6);
+		   p1.add(buttonM7);
+		   p1.add(buttonM8);
+		   p1.add(buttonM9);
+		   p1.add(buttonM10);
+		   p1.add(buttonM11);
+		   p1.add(buttonM12);
+		   p1.add(buttonM13);
+		   p1.add(buttonM14);
+		   p1.add(buttonM15);
+		   p1.add(buttonM16);
+		   p1.add(buttonM17);
+		   p1.add(buttonM18);
+		   p1.add(buttonM19);
+		   p1.add(buttonM20);
+		  
+		  panelC.add(p1);
+		
+		
+		
+		panel.add(panelC,BorderLayout.CENTER);
+	
+		panelC.add(p1,BorderLayout.CENTER);
+		
+		
+		JPanel p4=new JPanel();
+		p4.setLayout(new GridLayout(6,5,5,5));
+		
+		JButton buttonS1 = new JButton("CE");
+		JButton buttonS2 = new JButton("Backspace");
+		JButton buttonS3 = new JButton("1/x");
+		JButton buttonS4 = new JButton("x^2");
+		JButton buttonS5 = new JButton("x^3");
+		JButton buttonS6 = new JButton("+/-");
+		
+		JButton buttonS7 = new JButton("sin");
+		JButton buttonS8 = new JButton("cos");
+		JButton buttonS9 = new JButton("tan");
+		JButton buttonS10 = new JButton("%");
+		JButton buttonS11= new JButton("7");
+		JButton buttonS12 = new JButton("8");
+		
+		JButton buttonS13 = new JButton("9");
+		JButton buttonS14 = new JButton("log");
+		JButton buttonS15 = new JButton("sqrt");
+		JButton buttonS16 = new JButton("4");
+		JButton buttonS17 = new JButton("5");
+		JButton buttonS18 = new JButton("6");
+		
+		JButton buttonS19 = new JButton("e");
+		JButton buttonS20 = new JButton("ln");
+		JButton buttonS21 = new JButton("1");
+		JButton buttonS22 = new JButton("2");
+		JButton buttonS23 = new JButton("3");
+		JButton buttonS24 = new JButton("×");
+		
+		JButton buttonS25 = new JButton("÷");
+		JButton buttonS26 = new JButton(".");
+		JButton buttonS27 = new JButton("0");
+		JButton buttonS28 = new JButton("+");
+		JButton buttonS29 = new JButton("-");
+		JButton buttonS30 = new JButton("=");
+		
+		
+		   p4.add(buttonS1);
+		   p4.add(buttonS2);
+		   p4.add(buttonS3);
+		   p4.add(buttonS4);
+		   p4.add(buttonS5);
+		   p4.add(buttonS6);
+		   p4.add(buttonS7);
+		   p4.add(buttonS8);
+		   p4.add(buttonS9);
+		   p4.add(buttonS10);
+		   p4.add(buttonS11);
+		   p4.add(buttonS12);
+		   p4.add(buttonS13);
+		   p4.add(buttonS14);
+		   p4.add(buttonS15);
+		   p4.add(buttonS16);
+		   p4.add(buttonS17);
+		   p4.add(buttonS18);
+		   p4.add(buttonS19);
+		   p4.add(buttonS20);
+		   p4.add(buttonS21);
+		   p4.add(buttonS22);
+		   p4.add(buttonS23);
+		   p4.add(buttonS24);
+		   p4.add(buttonS25);
+		   p4.add(buttonS26);
+		   p4.add(buttonS27);
+		   p4.add(buttonS28);
+		   p4.add(buttonS29);
+		   p4.add(buttonS30);
+		   
+		  panelC.add(p4);
+		
+		  
+		 //菜单条 
+		  JMenuBar menuBar=new JMenuBar();
+		  frame.setJMenuBar(menuBar);
+		  JMenu modelMenu=new JMenu("模式");
+		  menuBar.add(modelMenu);
+		  JMenuItem standred=new JMenuItem("标准");  
+		  standred.addActionListener(new ActionListener() {
+			   @Override
+			   public void actionPerformed(ActionEvent e) {
+			   
+			    cardLayout.first(panelC);
+			   }  
+			  });
+			  modelMenu.add(standred); 
+			  JMenuItem science=new JMenuItem("科学");
+			  science.addActionListener(new ActionListener() {
+			   @Override
+			   public void actionPerformed(ActionEvent e) {
+			    cardLayout.last(panelC);
+			   }   
+			  });
+			  modelMenu.add(science);
+		
+		
+		
+		frame.setLocation(300,200);
+		frame.setResizable(false);
+		frame.getContentPane().setLayout(new BorderLayout());
+		frame.getContentPane().add(text,BorderLayout.NORTH);
+		frame.getContentPane().add(panel,BorderLayout.CENTER);
+		frame.pack();
+		frame.setVisible(true);
+		
+		
+		
+		//数字键的处理
+		 class Listener implements ActionListener{
+			@SuppressWarnings("unchecked")
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				String s1=((JButton)e.getSource()).getText();//从按钮中获取
+			    store =(JButton)e.getSource();
+			    vt.add(store);//读入存储的符号键并添加到vt中去
+			    
+			    if(k1==1) {//输入str1
+			    	if(k3==1) {//str1可以被清0
+			    		str1="";//
+			    		k5=1;//可以输入小数点
+			    	}
+			    	str1=str1+s1;//str+s;按下按键3时为0+3
+			    	k3=k3+1;//此时str1不可以被清0
+			    	text.setText(str1);//然后输出str1
+			    }
+			    else if(k1==2) {//输入str2
+			    	if(k4==1) {//str2可以被清0
+			    		str2="";
+			    		k5=1;//可以输入小数点
+			    	}
+			    	str2=str2+s1;
+			    	k4=k4+1;//此时str2不可以被清0
+			    	text.setText(str2);//输出str2
+			    }
+			}
+		}
+		//运算符号的处理
+		@SuppressWarnings("hiding")
+		class Listener_Signal implements ActionListener{
+			@SuppressWarnings("unchecked")
+			@Override
+			public void actionPerformed(ActionEvent e) {
+			String s2=((JButton)e.getSource()).getText();	
+			 store =(JButton)e.getSource();
+			    vt.add(store);
+			    if(k2==1) {
+			    	k1=2;
+			    	k5=1;
+			    	signal=s2;
+			    	k2=k2+1;
+			    }
+			    else {
+			    	int a=vt.size();
+			    	JButton c=(JButton)vt.get(a-2);
+			    	if(!(c.getText().equals("+"))
+			    			&& !(c.getText().equals("-"))&& !(c.getText().equals("sin"))&& !(c.getText().equals("10^x"))
+			    			&& !(c.getText().equals("×"))&& !(c.getText().equals("cos"))&& !(c.getText().equals("log"))
+			    			&& !(c.getText().equals("÷"))&& !(c.getText().equals("tan"))&& !(c.getText().equals("%"))
+			    			&& !(c.getText().equals("sqrt"))&& !(c.getText().equals("x^2"))&& !(c.getText().equals("e"))
+			    			&& !(c.getText().equals("1/x"))&& !(c.getText().equals("x^3"))&& !(c.getText().equals("+/-"))
+			    			) {
+			    		calculate();
+			    		str1=result;
+			    		k1=2;
+			    		k5=1;
+			    		k4=1;
+			    		signal=s2;
+			    	}
+			    	k2=k2+1;
+			    }
+			}
+			
+		}
+		
+		
+		
+		 //清除键
+		
+		@SuppressWarnings("hiding")
+		class Listener_Clear implements ActionListener{
+			@SuppressWarnings("unchecked")
+			public void actionPerformed(ActionEvent e) {
+			store = (JButton) e.getSource();
+			vt.add(store);
+			k5 = 1;
+			k2 = 1;
+			k1 = 1;
+			k3 = 1;
+			k4 = 1;
+			str1 = "0";
+			str2 = "0";
+			signal = "";
+			result = "";
+			text.setText(result);
+			vt.clear();
+			}
+			}
+		//等于键的逻辑
+		
+		@SuppressWarnings("hiding")
+		class Listener_equals implements ActionListener {
+			@SuppressWarnings("unchecked")
+			public void actionPerformed(ActionEvent e) {
+
+			store = (JButton) e.getSource();
+			vt.add(store);
+			calculate();
+			k1 = 1;
+			k2 = 1;
+			k3 = 1;
+			k4 = 1;
+			str1 = result;
+			}
+			}
+		//小数点的处理
+		
+		@SuppressWarnings("hiding")
+		class Listener_point implements ActionListener {
+			@SuppressWarnings("unchecked")
+			public void actionPerformed(ActionEvent e) {
+			store = (JButton) e.getSource();
+			vt.add(store);
+			if (k5 == 1) {
+			String ss2 = ((JButton) e.getSource()).getText();
+			if (k1 == 1) {
+			if (k3 == 1) {
+			str1 = "";
+			k5 = 1;
+			}
+			str1 = str1 + ss2;
+			k3 = k3 + 1;
+			text.setText(str1);
+			} else if (k1 == 2) {
+			if (k4 == 1) {
+			str2 = "";
+			k5 = 1;
+			}
+			str2 = str2 + ss2;
+			k4 = k4 + 1;
+			text.setText(str2);
+			}
+			}
+			k5 = k5 + 1;
+			}
+			}
+		//注册监听器
+		
+		Listener listen=new Listener();//监听数字键
+		Listener_equals listenE=new Listener_equals();//监听等号
+		Listener_Clear listenC=new Listener_Clear();//监听清除键
+		Listener_point listenP=new Listener_point();//监听小数点键
+	    Listener_Signal listenS=new Listener_Signal();//监听符号键
+	    
+	    
+	   buttonM1.addActionListener(listenC);
+	   buttonM2.addActionListener(listenC);
+	   buttonM3.addActionListener(listenS);
+	   buttonM4.addActionListener(listenS);
+	   
+	   buttonM5.addActionListener(listen);
+	   buttonM6.addActionListener(listen);
+	   buttonM7.addActionListener(listen);
+	   buttonM8.addActionListener(listenS);
+	   
+	   buttonM9.addActionListener(listen);
+	   buttonM10.addActionListener(listen);
+	   buttonM11.addActionListener(listen);
+	   buttonM12.addActionListener(listenS);
+	   
+	   buttonM13.addActionListener(listen);
+	   buttonM14.addActionListener(listen);
+	   buttonM15.addActionListener(listen);
+	   buttonM16.addActionListener(listenS);
+	   
+	   buttonM17.addActionListener(listenS);
+	   buttonM18.addActionListener(listenS);
+	   buttonM19.addActionListener(listenP);
+	   buttonM20.addActionListener(listenE);
+	   
+	   buttonS1.addActionListener(listenC);
+	   buttonS2.addActionListener(listenC);
+	   buttonS3.addActionListener(listenS);
+	   buttonS4.addActionListener(listenS);
+	   buttonS5.addActionListener(listenS);		   
+	   buttonS6.addActionListener(listenS);
+	   
+	   buttonS7.addActionListener(listenS);
+	   buttonS8.addActionListener(listenS);	   
+	   buttonS9.addActionListener(listenS);
+	   buttonS10.addActionListener(listenS);		   
+	   buttonS11.addActionListener(listen);
+	   buttonS12.addActionListener(listen); 
+	   
+	   buttonS13.addActionListener(listen);
+	   buttonS14.addActionListener(listenS);
+	   buttonS15.addActionListener(listenS);		   
+	   buttonS16.addActionListener(listen);
+	   buttonS17.addActionListener(listen);
+	   buttonS18.addActionListener(listen);
+	   
+	   buttonS19.addActionListener(listenS);
+	   buttonS20.addActionListener(listenS);		   
+	   buttonS21.addActionListener(listen);
+	   buttonS22.addActionListener(listen);
+	   buttonS23.addActionListener(listen);
+	   buttonS24.addActionListener(listenS);
+	   
+	   buttonS25.addActionListener(listenS);		   
+	   buttonS26.addActionListener(listenP);
+	   buttonS27.addActionListener(listen);
+	   buttonS28.addActionListener(listenS);
+	   buttonS29.addActionListener(listenS);
+	   buttonS30.addActionListener(listenE);
+		
+	   
+		
+	
+	  frame.addWindowListener(new WindowAdapter() {
+	  public void windowClosing(WindowEvent e) {
+	  System.exit(0);
+	  }
+	  });
+	  }
+
+
+
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		
+	}
+	
+	public void calculate() {
+		double a = 0;
+		double b = 0;
+		String c=signal;
+		double result1=0;
+		if(c.equals("")) {
+			text.setText("请输入数据");
+			
+		}
+		else {
+			if(str1.equals("."))
+				str1="0.0";
+			if(str2.equals("."))
+				str2="0.0";
+			a = Double.valueOf(str1).doubleValue();
+			b = Double.valueOf(str2).doubleValue();
+			if(c.equals("+")) {
+				result1=a+b;
+			}
+			if(c.equals("-")) {
+				result1=a-b;
+			}
+			if(c.equals("×")) {
+				BigDecimal m1 = new BigDecimal(Double.toString(a));
+				BigDecimal m2 = new BigDecimal(Double.toString(b));
+				result1= m1.multiply(m2).doubleValue();
+			}
+		}
+		if(c.equals("÷")) {
+			if(b==0) {
+				text.setText("除数不能为0");
+			}
+			else {
+				result1=a/b;
+			}
+		}
+		
+		if(c.equals("%")) {
+			if(b==0) {
+				text.setText("除数不能为0");
+			}
+			else {
+				result1=a/b;
+			}
+		}
+		if(c.equals("1/x")) {
+			if(a==0) {
+				text.setText("除数不能为0");
+			}
+			else {
+				result1=1/a;
+			}
+		}
+		if(c.equals("x^2")) {
+			if(a==0) {
+				result1=0;
+			}
+			else {
+				result1=a*a;
+			}
+		}
+		if(c.equals("x^3")) {
+			if(a==0) {
+				result1=0;
+			}
+			else {
+				result1=a*a*a;
+			}
+		}
+		if(c.equals("+/-")) {
+			if(a==0) {
+				result1=0;
+			}
+			else {
+				result1=-a;
+			}
+		}
+		if(c.equals("sqrt")) {
+			if(a<=0) {
+				text.setText("被开方数不能小于0");
+			}
+			else {
+				result1=Math.sqrt(a);
+			}
+		}
+		if(c.equals("log")) {
+			if(a<=0) {
+				text.setText("底数不可以小于0");
+			}
+			else {
+				result1=Math.log(a);
+			}
+		}
+		
+		if(c.equals("sin")) {
+			result1=Math.sin(a);
+		}
+		if(c.equals("cos")) {
+			result1=Math.cos(a);
+		}
+		if(c.equals("tan")) {
+			result1=Math.tan(a);
+		}
+		if(c.equals("e^x")) {
+			result1=Math.exp(a);
+		}
+		result =  ((new Double(result1)).toString());
+		text.setText(result);
+		
+		}
+		}
+	
+
+
diff --git a/src/java2022spring/window.java b/src/java2022spring/window.java
new file mode 100644
index 0000000000000000000000000000000000000000..df96c63b29b7ef2ae026fb41d92a59d42fd1e22a
--- /dev/null
+++ b/src/java2022spring/window.java
@@ -0,0 +1,11 @@
+package java2022spring;
+
+
+public class window {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+		Calculator cal = new Calculator();
+	}
+
+}