diff --git a/src/java2022spring/Calculator.java b/src/java2022spring/Calculator.java
new file mode 100644
index 0000000000000000000000000000000000000000..32b64a12840f7486ec3582faee273e80140041f1
--- /dev/null
+++ b/src/java2022spring/Calculator.java
@@ -0,0 +1,385 @@
+package java2022spring;
+
+import java.awt.*;
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+public class Calculator {
+public static void main(String[] args) {
+	JFrame cal =new JFrame("计算器");
+	StringBuffer inputNum =new StringBuffer();
+	JTextField TF = new JTextField();
+	TF.setFont(new Font("宋体",Font.PLAIN,30));
+	TF.setEnabled(false);
+	TF.setPreferredSize(new Dimension(540,100));
+	TF.setSize(700,700);
+	TF.setHorizontalAlignment(JTextField.RIGHT);
+	cal.add(TF,BorderLayout.NORTH);
+	JPanel jp1 = new JPanel();
+	cal.add(jp1);
+	jp1.setLayout(new GridLayout(6,4));
+	cal.setSize(400,500);
+	cal.setLocation(300,200);
+	
+	JButton button[] =new JButton[23];
+	button[1]=new JButton("CE");
+	button[2]=new JButton("C");
+	button[3]=new JButton("DEL");
+	button[4]=new JButton("/");
+	button[5]=new JButton("7");
+	button[6]=new JButton("8");
+	button[7]=new JButton("9");
+	button[8]=new JButton("*");
+	button[9]=new JButton("4");
+	button[10]=new JButton("5");
+	button[11]=new JButton("6");
+	button[12]=new JButton("-");
+	button[13]=new JButton("1");
+	button[14]=new JButton("2");
+	button[15]=new JButton("3");
+	button[16]=new JButton("+");
+	button[17]=new JButton("n");
+	button[18]=new JButton("0");
+	button[19]=new JButton(".");
+	button[20]=new JButton("=");
+	button[21]=new JButton("+/-");
+	button[22]=new JButton("1/x");
+
+
+	for(int i=1;i<23;i++) {
+		button[i].setFont(new Font("宋体",Font.BOLD,30));
+		jp1.add(button[i]);
+		
+	}
+	
+	
+	button[4].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			String sGet = TF.getText().toString();
+//			char operation = '/';
+			if(sGet.contains("=")) {
+				extracted(sGet, '/', inputNum, TF);
+
+			}else{
+
+				inputNum.append('/');
+				String str=inputNum.toString();
+				TF.setText(str);
+			}
+		}
+	});
+	
+	button[5].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('7');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[6].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('8');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[7].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('9');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[8].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			String sGet = TF.getText().toString();
+			if(sGet.contains("=")) {
+				extracted(sGet, '*', inputNum, TF);
+
+			}else {
+				inputNum.append('*');
+				String str = inputNum.toString();
+				TF.setText(str);
+			}
+			
+		}
+	});
+	
+	button[9].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('4');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[10].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('5');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[11].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('6');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[12].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			String sGet = TF.getText().toString();
+			if(sGet.contains("=")) {
+				extracted(sGet, '－', inputNum, TF);
+
+			}else {
+				inputNum.append('－');
+				String str = inputNum.toString();
+				TF.setText(str);
+			}
+		}
+	});
+	
+	button[13].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('1');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[14].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('2');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[15].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('3');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[16].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			String sGet = TF.getText().toString();
+			if(sGet.contains("=")) {
+				extracted(sGet, '+', inputNum, TF);
+
+			}else {
+				inputNum.append('+');
+				String str = inputNum.toString();
+				TF.setText(str);
+			}
+		}
+	});
+	
+
+	
+	button[18].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('0');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	button[19].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.append('.');
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});
+	
+	
+	button[1].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+		inputNum.delete(0, inputNum.length());
+		TF.setText(" ");
+		}
+	}); 
+	
+	button[2].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			inputNum.delete(0, inputNum.length());
+			TF.setText(" ");
+		}
+	});
+	
+	button[3].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			if(inputNum.length()!=0)
+				inputNum.delete(inputNum.length()-1, inputNum.length());
+			String str=inputNum.toString();
+			TF.setText(str);
+			
+		}
+	});//DEL
+	
+	
+	button[17].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+
+			String sGet = TF.getText().toString();
+			if(sGet.contains("=")) {
+				extracted(sGet, 'n', inputNum, TF);
+
+			}else {
+				inputNum.append('n');
+				String str = inputNum.toString();
+				TF.setText(str);
+			}
+		}
+	});
+
+
+	button[21].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+//			inputNum.append('-');
+			String sGet = TF.getText().toString();
+			if(sGet.contains("-")){
+
+				inputNum.delete(0,1)	;
+			}else{
+
+				inputNum.insert(0,'-');
+			}
+			String str=inputNum.toString();
+			TF.setText(str);
+
+		}
+	});
+
+	button[22].addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			String sGet = TF.getText().toString();
+			if(!sGet.contains("=")){
+
+				String num = inputNum.toString();
+				inputNum.setLength(0);
+				inputNum.append("1/"+num);
+				String str=inputNum.toString();
+				TF.setText(str);
+			}else{
+
+
+				String sArgs[] = sGet.split("\\=");
+				double number[] = new double[2];
+				number[1] = Double.parseDouble(sArgs[1]);
+				inputNum.setLength(0);
+				inputNum.append("1/");
+				inputNum.append(""+number[1]);
+				String str1 = inputNum.toString();
+				TF.setText(str1);
+			}
+		}
+	});
+
+	
+	
+	  button[20].addActionListener(new ActionListener() {  //借鉴
+		  
+		 public void actionPerformed(ActionEvent e) {
+			 String sGet = TF.getText().toString(); 
+		    if(sGet.contains("+")) {
+		     String sArgs[] = sGet.split("\\+");
+		     double number[] = new double[2];
+		     for(int i=0;i<2;i++) {
+		      number[i] = Double.parseDouble(sArgs[i]);
+		     }
+		      double num = number[0]+number[1];
+		      String ss = String.valueOf(num);
+		      TF.setText(sGet+"="+ss);
+		     }
+		    
+		    if(sGet.contains("－")) {
+		     String sArgs[] = sGet.split("\\－");
+		     double number[] = new double[2];
+		     for(int i=0;i<2;i++) {
+		      number[i] = Double.parseDouble(sArgs[i]);
+		     }
+		      double num = number[0]-number[1];
+		      String ss = String.valueOf(num);
+		      TF.setText(sGet+"="+ss);
+		     }
+		    
+		    if(sGet.contains("*")) {
+		     String sArgs[] = sGet.split("\\*");
+		     double number[] = new double[2];
+		     for(int i=0;i<2;i++) {
+		      number[i] = Double.parseDouble(sArgs[i]);
+		     }
+		      double num = number[0]*number[1];
+		      String ss = String.valueOf(num);
+		      TF.setText(sGet+"="+ss);
+		     }
+		    
+		    
+		    if(sGet.contains("/")) {
+		     String sArgs[] = sGet.split("\\/");
+		     double number[] = new double[2];
+		     for(int i=0;i<2;i++) {
+		      number[i] = Double.parseDouble(sArgs[i]);
+		     }
+		      double num = number[0]/number[1];
+		      if(number[1]==0) {
+		       TF.setText(sGet+"="+"Erroring");
+		      }
+		      else { 
+		       String ss = String.valueOf(num);
+		       TF.setText(sGet+"="+ss);
+		      }
+		      
+		     }
+		    if(sGet.contains("n")) {
+			     String sArgs[] = sGet.split("n");
+			     double number[] = new double[2];
+			     for(int i=0;i<2;i++) {
+			      number[i] = Double.parseDouble(sArgs[i]);
+			     }
+			      double num = (int)Math.pow(number[0],number[1]);
+			      String ss = String.valueOf(num);
+			      TF.setText(sGet+"="+ss);
+			     }
+		    
+		   }
+		  });
+
+	
+	cal.setVisible(true);
+	cal.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+}
+
+	private static void extracted(String sGet, char operation, StringBuffer inputNum, JTextField TF) {
+		String sArgs[] = sGet.split("\\=");
+		double number[] = new double[2];
+		number[1] = Double.parseDouble(sArgs[1]);
+		inputNum.setLength(0);
+		inputNum.append(""+number[1]);
+		inputNum.append(operation);
+		String str= inputNum.toString();
+		TF.setText(str);
+	}
+}
\ No newline at end of file
diff --git a/src/java2022spring/Test.java b/src/java2022spring/Test.java
deleted file mode 100644
index 24deb29bfc0e5f50fdedcd21b504e77b529d48b6..0000000000000000000000000000000000000000
--- a/src/java2022spring/Test.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package java2022spring;
-
-public class Test {
-	public static void main(String[] args) {
-		System.out.println("Hello world!");
-	}
-}