diff --git a/src/java2022spring/GoCaculator.java b/src/java2022spring/GoCaculator.java
new file mode 100644
index 0000000000000000000000000000000000000000..c6422f9e3962cc3db37deb739a7e49be32d8a6f8
--- /dev/null
+++ b/src/java2022spring/GoCaculator.java
@@ -0,0 +1,162 @@
+package java2022spring;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.math.*;
+
+public class GoCaculator implements ActionListener{	
+	JTextField f1;//定义文本框
+	JButton b1;//定义
+	String btName[]= {"del","CE","sqrt","^2",
+	                  "7","8","9","÷",
+	                  "4","5","6","×",
+	                  "1","2","3","-",
+	                  "0",".","=","+"};
+	String str1="";
+	String str2="";
+	String a1="";
+	String b2="";
+	char operate='~';
+    double c;
+    boolean place;
+       
+		public void go() {
+			//创建窗口
+			JFrame frame = new JFrame("计算器");			
+			//设置frame的大小、标题
+			frame.setSize(300,450);
+			frame.setTitle("Smin's Calculator");
+			frame.setResizable(false);//禁用窗口大小调整
+			
+			//创建文本框		
+			f1=new JTextField("0");
+			f1.setPreferredSize(new Dimension(400,60));//调整输入框的大小
+			//设置文本框字体、颜色
+			f1.setFont(new Font("黑体",Font.BOLD,25));
+			f1.setBackground(new Color(200,200,200));
+			frame.add(f1,BorderLayout.NORTH);
+			
+			//创建面板
+			JPanel p = new JPanel();
+			p.setLayout(new GridLayout(5,4));//5行4列
+				
+			//创建按键
+			b1=new JButton();	
+			frame.add(b1,BorderLayout.CENTER);	
+			for(int i=0;i<btName.length;i++) {
+			JButton bt = new JButton(btName[i]);
+			bt.setBackground(new Color(240,200,200));
+			bt.setFont(new Font("黑体",Font.BOLD,16));
+			p.add(bt);
+            bt.addActionListener(this);
+			}
+
+			frame.add(p,BorderLayout.CENTER);			
+			frame.setVisible(true); 		
+		}
+		
+
+		@Override
+		public void actionPerformed(ActionEvent e) { //响应
+			
+			String action = e.getActionCommand();
+			//String result = null;			
+			char m = action.charAt(0);		
+			if((m >='0' && m <= '9') || m=='.') {
+						   //字符串处理				
+				if(operate == '~')
+				{ place = true;
+				  str1 += action;//实现 每次点的数字可以保留下来
+				  f1.setText(str1);//放入文本框中		
+				}
+				else {
+					place = false;
+					str2 += action;//切换下一个数
+					f1.setText(str2);//显示下一个数	
+				}
+			}			
+	     	else if(m=='+' || m =='-' || m=='×' || m=='÷'  )
+			{		operate = m;
+			}			
+			else if(m=='=') {
+				double a = Double.parseDouble(str1);
+				double b = Double.parseDouble(str2);
+				if(operate=='+') {
+				     c=Math1.add(a,b);
+					f1.setText(c+"");
+			
+				}
+				else if(operate=='-') {
+					 c=Math1.subtract(a,b);
+					f1.setText(c+"");
+					
+				}
+                else if(operate=='×') {
+					c= Math1.multiply(a,b);
+					f1.setText(c+"");
+					
+				}
+                else if(operate=='÷') {
+					 c=Math1.divide(a,b);
+					f1.setText(c+"");
+					
+				}
+				str1=(c+"");
+				str2="";
+			}
+							
+		       //其他按键，字符串
+			else if(action =="del" || action == "CE" ||action =="sqrt"||action == "^2") {
+				//清空
+				if(action=="CE") {
+     		    	f1.setText("0");
+     		    	str1="";
+     		    	str2="";
+     		    	operate='~';//为下一次计算做准备
+     		    }
+				//回删
+				else if(action=="del") {
+					if(place) {
+						str1=str1.substring(0,str1.length()-1);
+						f1.setText(str1);
+					}
+					else
+						{str2=str2.substring(0,str2.length()-1);
+					    f1.setText(str2);}
+				}
+				
+				//平方
+				else if(action=="^2") {
+					if(place) {
+						double a = Double.parseDouble(str1);
+						double result=a*a;
+						str1=result+"";
+						f1.setText(str1);
+					}
+					else
+						{double a = Double.parseDouble(str2);
+						double result=a*a;
+						str2=result+"";
+						f1.setText(str2);}
+				}
+				//开方
+				else if(action=="sqrt") {
+					if(place) {				
+						double a = Double.parseDouble(str1);
+						str1=Math.sqrt(a)+"";
+						f1.setText(str1);
+					}
+					else
+						{
+						double a = Double.parseDouble(str2);
+						str2=Math.sqrt(a)+"";
+						f1.setText(str2);
+							}
+				}
+	     	}
+		}
+    }
+
+
+
+
diff --git a/src/java2022spring/Math1.java b/src/java2022spring/Math1.java
new file mode 100644
index 0000000000000000000000000000000000000000..1b605d37dc44bcc8e93b8692659024b03e467086
--- /dev/null
+++ b/src/java2022spring/Math1.java
@@ -0,0 +1,35 @@
+package java2022spring;
+import java.math.*;
+//进行加减乘除计算
+
+public class Math1 {	
+	//为一个double类型创建对象，精准小数
+	private static BigDecimal getBigDecimal(double number) {
+		  return new BigDecimal(number);
+	}
+	//加法
+	public static double add(double a,double b) {
+		  BigDecimal left = getBigDecimal(a);
+		  BigDecimal right = getBigDecimal(b);
+		  return left.add(right).doubleValue();
+	}
+	//减法
+	public static double subtract(double a,double b) {
+		  BigDecimal left = getBigDecimal(a);
+		  BigDecimal right = getBigDecimal(b);
+		  return left.subtract(right).doubleValue();
+	}
+	//乘法
+	public static double multiply(double a,double b) {
+		  BigDecimal left = getBigDecimal(a);
+		  BigDecimal right = getBigDecimal(b);
+		  return left.multiply(right).doubleValue();
+	}
+	//除法
+	public static double divide(double a,double b) {
+		  BigDecimal left = getBigDecimal(a);
+		  BigDecimal right = getBigDecimal(b);
+		  return left.divide(right).doubleValue();
+	}
+	}
+
diff --git a/src/java2022spring/Test.java b/src/java2022spring/Test.java
index 24deb29bfc0e5f50fdedcd21b504e77b529d48b6..de58acfb17e209f2227f4eedb447672e9f1ea9f7 100644
--- a/src/java2022spring/Test.java
+++ b/src/java2022spring/Test.java
@@ -1,7 +1,10 @@
 package java2022spring;
+import java.awt.*;
 
+import javax.swing.*;
 public class Test {
 	public static void main(String[] args) {
-		System.out.println("Hello world!");
+		GoCaculator use = new GoCaculator();
+		use.go();
 	}
 }