diff --git a/src/java2022spring/Calculator.java b/src/java2022spring/Calculator.java
new file mode 100644
index 0000000000000000000000000000000000000000..14d9f354999e0dfd8d4b277e6ff0d59b3c2e2f94
--- /dev/null
+++ b/src/java2022spring/Calculator.java
@@ -0,0 +1,363 @@
+package java2022spring;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+public class Calculator {
+	public static void main(String[] args) {
+		new CalculatorFrame();
+	}
+		
+}
+class CalculatorFrame {
+	//基本窗体创建
+	JFrame frame = new JFrame("计算器");
+	JTextField resultField=new JTextField();
+	
+	public CalculatorFrame(){
+		//按钮创建
+		JButton buttonNum[]=new JButton[10];                  
+		for(int i=0;i<10;i++) {
+			buttonNum[i]=new JButton(i+"");
+			buttonNum[i].setFont(new Font("",Font.PLAIN,30));
+		}
+		
+		JButton buttonPlus=new JButton("+");
+		buttonPlus.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonMinus=new JButton("-");
+		buttonMinus.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonMultiply=new JButton("×");
+		buttonMultiply.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonDivide=new JButton("÷");
+		buttonDivide.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonPoint=new JButton(".");
+		buttonPoint.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonEqual=new JButton("=");
+		buttonEqual.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonDEL=new JButton("DEL");
+		buttonDEL.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonSign=new JButton("+/-");
+		buttonSign.setFont(new Font("",Font.PLAIN,30));
+		
+		JButton buttonCE=new JButton("CE");
+		buttonCE.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonC=new JButton("C");
+		buttonC.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonSqr=new JButton("x^2");
+		buttonSqr.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonSqrt=new JButton("√x");
+		buttonSqrt.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonSin=new JButton("sin");
+		buttonSin.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonCos=new JButton("cos");
+		buttonCos.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonTan=new JButton("tan");
+		buttonTan.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonDao=new JButton("1/x");
+		buttonDao.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonPercent=new JButton("%");
+		buttonPercent.setFont(new Font("",Font.PLAIN,20));
+		
+		JButton buttonLog=new JButton("log");
+		buttonLog.setFont(new Font("",Font.PLAIN,20));
+		
+		//面板创建与组件添加
+		JPanel panel = new JPanel();
+		panel.setLayout(new GridLayout(7,4));
+		panel.add(buttonLog);
+		panel.add(buttonDao);
+		panel.add(buttonPercent);
+		panel.add(buttonTan);
+		panel.add(buttonSqr);
+		panel.add(buttonSqrt);
+		panel.add(buttonSin);
+		panel.add(buttonCos);
+		panel.add(buttonCE);
+		panel.add(buttonC);
+		panel.add(buttonDEL);
+		panel.add(buttonDivide);
+		panel.add(buttonNum[7]);
+		panel.add(buttonNum[8]);
+		panel.add(buttonNum[9]);
+		panel.add(buttonMultiply);
+		panel.add(buttonNum[4]);
+		panel.add(buttonNum[5]);
+		panel.add(buttonNum[6]);
+		panel.add(buttonMinus);
+		panel.add(buttonNum[1]);
+		panel.add(buttonNum[2]);
+		panel.add(buttonNum[3]);
+		panel.add(buttonPlus);
+		panel.add(buttonSign);
+		panel.add(buttonNum[0]);
+		panel.add(buttonPoint);
+		panel.add(buttonEqual);
+		
+		//窗口界面设置
+		frame.setSize(450,600);
+		frame.setResizable(true);
+		frame.setVisible(true);
+		frame.setLocation(200,200);
+		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		frame.getContentPane().setLayout(new BorderLayout());
+		frame.getContentPane().add(resultField,BorderLayout.NORTH);
+		resultField.setPreferredSize(new Dimension(0,120));
+		frame.getContentPane().add(panel,BorderLayout.CENTER);
+		
+		//显示区域设置
+		resultField.setEditable(false);
+		resultField.setHorizontalAlignment(JTextField.RIGHT);
+		resultField.setText("0");
+		resultField.setFont(new Font("",Font.PLAIN,30));
+		
+		//各种监听器的创建
+		Listener_clear Listener_C=new Listener_clear();
+		buttonC.addActionListener(Listener_C);
+		
+		Listener_clear Listener_CE=new Listener_clear();
+		buttonCE.addActionListener(Listener_CE);
+		
+		Listener_clear Listener_DEL=new Listener_clear();
+		buttonDEL.addActionListener(Listener_DEL);
+		
+		Listener_num Listener_Num=new Listener_num();
+		for(int i=0;i<10;i++)
+			buttonNum[i].addActionListener(Listener_Num);
+		
+		Listener_oper Listener_plus=new Listener_oper();
+		buttonPlus.addActionListener(Listener_plus);
+		
+		Listener_oper Listener_minus=new Listener_oper();
+		buttonMinus.addActionListener(Listener_minus);
+		
+		Listener_oper Listener_multiply=new Listener_oper();
+		buttonMultiply.addActionListener(Listener_multiply);
+		
+		Listener_oper Listener_divide=new Listener_oper();
+		buttonDivide.addActionListener(Listener_divide);
+		
+		Listener_oper Listener_equal=new Listener_oper();
+		buttonEqual.addActionListener(Listener_equal);
+		
+		Listener_sign Listener_Sign=new Listener_sign();
+		buttonSign.addActionListener(Listener_Sign);
+		
+		Listener_point Listener_Point=new Listener_point();
+		buttonPoint.addActionListener(Listener_Point);
+		
+		Listener_specialCal Listener_Sqr=new Listener_specialCal();
+		buttonSqr.addActionListener(Listener_Sqr);
+		
+		Listener_specialCal Listener_Sqrt=new Listener_specialCal();
+		buttonSqrt.addActionListener(Listener_Sqrt);
+		
+		Listener_specialCal Listener_Sin=new Listener_specialCal();
+		buttonSin.addActionListener(Listener_Sin);
+		
+		Listener_specialCal Listener_Cos=new Listener_specialCal();
+		buttonCos.addActionListener(Listener_Cos);
+		
+		Listener_specialCal Listener_Tan=new Listener_specialCal();
+		buttonTan.addActionListener(Listener_Tan);
+		
+		Listener_specialCal Listener_Dao=new Listener_specialCal();
+		buttonDao.addActionListener(Listener_Dao);
+		
+		Listener_specialCal Listener_Percent=new Listener_specialCal();
+		buttonPercent.addActionListener(Listener_Percent);
+		
+		Listener_specialCal Listener_Log=new Listener_specialCal();
+		buttonLog.addActionListener(Listener_Log);
+		
+	}
+	boolean flag1=true;  
+	boolean flag2=false;  
+	String oper="=";//初始运算符为“=”
+	double result=0;//默认结果为0
+	
+	//基本运算操作
+	private void basicCal(double a) {
+		if (oper=="+")
+			result+=a;
+		else if(oper=="-")
+			result-=a;
+		else if(oper=="×")
+			result*=a;
+		else if(oper=="÷")
+			result/=a;
+		else if(oper=="=")
+			result=a;
+		resultField.setText(Double.toString(result));
+	}
+	
+	//清除键的监听（本段部分代码参考了百度的方法）
+	class Listener_clear implements ActionListener{
+		public void actionPerformed(ActionEvent e) {
+			String str=e.getActionCommand();
+			//C键
+			if (str=="C") {
+				resultField.setText("0");
+				flag1=true;
+				result=0;
+			}
+			//DEL键
+			else if(str=="DEL") {
+				if(Double.parseDouble(resultField.getText())>0) {
+					if(resultField.getText().length()>1) {
+						resultField.setText(resultField.getText().substring(0, resultField.getText().length()-1));
+					}
+					else {
+						resultField.setText("0");
+						flag1=true;
+					}
+				}
+				else {
+					if(resultField.getText().length()>2) {
+						resultField.setText(resultField.getText().substring(0, resultField.getText().length()-1));
+					}
+					else {
+						resultField.setText("0");
+						flag1=true;
+					}
+				}
+			}
+			//CE键
+			else if(str=="CE") {
+				resultField.setText("0");
+				flag1=true;
+			}
+		}
+	}
+	
+	//数字键的监听
+	class Listener_num implements ActionListener {
+		public void actionPerformed(ActionEvent e) {
+			String str=e.getActionCommand();
+			if(flag1) {
+				resultField.setText("");
+				flag1=false;
+			}
+			resultField.setText(resultField.getText().trim()+str);
+			if(resultField.getText().equals("0")) {
+				resultField.setText("0");
+				flag1=true;
+				flag2=true;
+			}
+		}
+	}
+	
+	//基本运算符的监听（本段功能的实现参考了百度的方法）
+	class Listener_oper implements ActionListener{
+		public void actionPerformed(ActionEvent e) {
+			String str=e.getActionCommand();
+			if(flag2) {
+				flag1=false;
+			}
+			if(flag1) {
+				oper=str;
+			}
+			else {
+				basicCal(Double.parseDouble(resultField.getText()));
+				oper=str;
+				flag1=true;
+			}
+			
+		}
+	}
+	
+	//换号符的监听
+	class Listener_sign implements ActionListener{
+		public void actionPerformed(ActionEvent e) {
+			String str=e.getActionCommand();
+			if(str=="+/-") {
+				double x=0-Double.parseDouble(resultField.getText().trim());
+				resultField.setText(Double.toString(x));
+			}
+		}
+	}
+	
+	//小数点的监听
+	class Listener_point implements ActionListener{
+		public void actionPerformed(ActionEvent e) {
+			flag1=false;
+			if(resultField.getText().trim().indexOf(".")==-1)
+				resultField.setText(resultField.getText()+".");
+		}
+	}
+	
+	//特殊运算的监听
+	class Listener_specialCal implements ActionListener{
+		public void actionPerformed(ActionEvent e) {
+			String str=e.getActionCommand();
+			double x=0;
+			//求平方
+			if(str.equals("x^2")) {
+				x=Double.parseDouble(resultField.getText());
+				resultField.setText(Double.toString(x*x));
+			}
+			//开方
+			else if(str.equals("√x")) {
+				x=Double.parseDouble(resultField.getText());
+				if(x>=0)
+					resultField.setText(Double.toString(Math.sqrt(x)));
+				else
+					resultField.setText("负数不能开方");
+			}
+			//sin函数
+			else if(str.equals("sin")) {
+				x=Double.parseDouble(resultField.getText());
+				resultField.setText(Double.toString(Math.sin(x)));
+			}
+			//cos函数
+			else if(str.equals("cos")) {
+				x=Double.parseDouble(resultField.getText());
+				resultField.setText(Double.toString(Math.cos(x)));
+			}
+			//tan函数
+			else if(str.equals("tan")) {
+				x=Double.parseDouble(resultField.getText());
+				resultField.setText(Double.toString(Math.tan(x)));
+			}
+			//倒数
+			else if(str.equals("1/x")) {
+				x=Double.parseDouble(resultField.getText());
+				if(x==0) {
+					resultField.setText("分母不能为0");
+				}
+				else {
+					resultField.setText(Double.toString(1/Double.parseDouble(resultField.getText())));
+				}
+			}
+			//百分数
+			else if(str.equals("%")) {
+				x=Double.parseDouble(resultField.getText());
+				resultField.setText(Double.toString(Double.parseDouble(resultField.getText())/100));
+			}
+			//对数
+			else if(str.equals("log")) {
+				x=Double.parseDouble(resultField.getText());
+				if(x>0) {
+					resultField.setText(Double.toString(Math.log(x)));
+				}
+				else
+					resultField.setText("零或负数不能求对数");
+			}
+		}
+	}
+}
+
+