diff --git a/CalculatorJFrame.java b/CalculatorJFrame.java
new file mode 100644
index 0000000..f9ce1f2
--- /dev/null
+++ b/CalculatorJFrame.java
@@ -0,0 +1,156 @@
+package Calculatorver4;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import javax.swing.*;
+
+public class CalculatorJFrame extends JFrame {
+    JLabel j1 = new JLabel("简易计算器");
+    JLabel j2 = new JLabel("运算数一");
+    JLabel j3 = new JLabel("运算数二");
+    JLabel j4 = new JLabel("运算结果");
+    JLabel l1 = new JLabel(" ".repeat(1000));
+    JLabel l2 = new JLabel(" ".repeat(1000));
+    JLabel l3 = new JLabel(" ".repeat(1000));
+    JLabel l4 = new JLabel(" ".repeat(1000));
+    JLabel l5 = new JLabel(" ".repeat(1000));
+    JLabel l6 = new JLabel(" ".repeat(1000));
+    JTextField t1 = new JTextField(10);
+    JTextField t2 = new JTextField(10);
+    JTextField t3 = new JTextField(10);
+    JTextField t4 = new JTextField(30);
+    JButton b1 = new JButton("相加");
+    JButton b2 = new JButton("相减");
+    JButton b3 = new JButton("全部清零");
+    public CalculatorJFrame() {
+        initJFrame();
+
+        loadInterFace();
+
+        this.setVisible(true);
+    }
+
+    private void loadInterFace() {
+
+        this.getContentPane().add(j1);
+        this.getContentPane().add(l1);
+        this.getContentPane().add(j2);
+        this.getContentPane().add(t1);
+        this.getContentPane().add(l2);
+        this.getContentPane().add(j3);
+        this.getContentPane().add(t2);
+        this.getContentPane().add(l3);
+        this.getContentPane().add(j4);
+        this.getContentPane().add(t3);
+        this.getContentPane().add(l4);
+        this.getContentPane().add(b1);
+        this.getContentPane().add(b2);
+
+        this.getContentPane().add(l5);
+        this.getContentPane().add(b3);
+        this.getContentPane().add(l6);
+        this.getContentPane().add(t4);
+
+
+
+        b1.addActionListener(new MyActionListener());
+        b2.addActionListener(new MyActionListener());
+        b3.addActionListener(new MyActionListener());
+
+//        t1.addActionListener(new TextActionListener(t1));
+//        t2.addActionListener(new TextActionListener(t2));
+
+    }
+
+    private void initJFrame() {
+        this.setSize(400,400);
+        this.setTitle("简易计算器");
+        this.setLocationRelativeTo(null);
+        this.setDefaultCloseOperation(3);
+        this.setLayout(new FlowLayout());
+    }
+
+
+    private class MyActionListener implements ActionListener{
+        public void actionPerformed(ActionEvent e) {
+            if(e.getSource() != b3) {
+                if(t1.getText().equals("") || t2.getText().equals("")) {
+                    t4.setText("");
+                    t4.setText("注意:运算数一和运算数二不能为空!");
+                }
+                else {
+                    t4.setText("");
+                    if(e.getSource() == b1) {
+                        if(check(t1) + check(t2)==2){
+                            String sa = t1.getText();
+                            Double a2 = Double.parseDouble(sa);
+                            String sb = t2.getText();
+                            Double b = Double.parseDouble(sb);
+                            Double c = a2+b;
+                            String sc = Double.toString(c);
+                            t3.setText(sc);
+                        }
+
+                    }
+                    else if(e.getSource() == b2) {
+                        if(check(t1) + check(t2)==2) {
+                            String sa = t1.getText();
+                            Double a = Double.parseDouble(sa);
+                            String sb = t2.getText();
+                            Double b = Double.parseDouble(sb);
+                            Double c = a - b;
+                            String sc = Double.toString(c);
+                            t3.setText(sc);
+                        }
+                    }
+                }
+            }
+            else {
+                t1.setText("");
+                t2.setText("");
+                t3.setText("");
+                t4.setText("");
+            }
+        }
+    }
+    public int check(JTextField tf) {
+        JTextField t = t1;
+        t4.setText("");
+        String s = t.getText();
+        boolean flag = true;
+        boolean l=true,r=true;
+        int cnt=0;
+        char[] a = s.toCharArray();
+        if(a[0] == '.') l = false;
+        if(a[a.length-1] == '.') r = false;
+        for(int i=0;i<a.length;i++) {
+            if(a[i]=='.') cnt+=1;
+            if( (a[i]<'0' || a[i]>'9') && a[i]!='.' ) {
+                flag = false;
+            }
+        }
+        if(!flag) {
+            t4.setText("");
+            t4.setText("注意:运算数中不能含有除了数字和小数点之外的非法字符!");
+            return 0;
+        }
+        else {
+            if(!l) {
+                t4.setText("");
+                t4.setText("注意:运算数的开头不能是小数点!");
+                return 0;
+            }
+            if(!r) {
+                t4.setText("");
+                t4.setText("注意:运算数的结尾不能是小数点!");
+                return 0;
+            }
+            if(cnt>1) {
+                t4.setText("");
+                t4.setText("注意:运算数中小数点超过一个!");
+                return 0;
+            }
+        }
+        return 1;
+    }
+}