计算器的第一次代码

src/compute/SimpleCalculator.java

@@ -0,0 +1,127 @@
+package compute;
+import javax.swing.*;
+import java.awt.*;
+
+public class SimpleCalculator {
+
+    private JFrame frame;
+    private JTextField inputField;
+    private double num1;
+    private double num2;
+    private String operator;
+
+    public SimpleCalculator() {
+        frame = new JFrame("简单计算器");
+        inputField = new JTextField();
+        inputField.setEditable(false);
+
+        // 创建按钮
+        JButton btn1 = new JButton("1");
+        JButton btn2 = new JButton("2");
+        JButton btn3 = new JButton("3");
+        JButton btn4 = new JButton("4");
+        JButton btn5 = new JButton("5");
+        JButton btn6 = new JButton("6");
+        JButton btn7 = new JButton("7");
+        JButton btn8 = new JButton("8");
+        JButton btn9 = new JButton("9");
+        JButton btn0 = new JButton("0");
+        JButton btnAdd = new JButton("+");
+        JButton btnSubtract = new JButton("-");
+        JButton btnMultiply = new JButton("*");
+        JButton btnDivide = new JButton("/");
+        JButton btnEqual = new JButton("=");
+        JButton btnClear = new JButton("C");
+
+        // 设置布局
+        JPanel panel = new JPanel();
+        panel.setLayout(new GridLayout(4, 4));
+        panel.add(btn7);
+        panel.add(btn8);
+        panel.add(btn9);
+        panel.add(btnDivide);
+        panel.add(btn4);
+        panel.add(btn5);
+        panel.add(btn6);
+        panel.add(btnMultiply);
+        panel.add(btn1);
+        panel.add(btn2);
+        panel.add(btn3);
+        panel.add(btnSubtract);
+        panel.add(btn0);
+        panel.add(btnEqual);
+        panel.add(btnClear);
+        panel.add(btnAdd);
+
+        // 添加事件监听器
+        btn1.addActionListener(e -> appendToInputField("1"));
+        btn2.addActionListener(e -> appendToInputField("2"));
+        btn3.addActionListener(e -> appendToInputField("3"));
+        btn4.addActionListener(e -> appendToInputField("4"));
+        btn5.addActionListener(e -> appendToInputField("5"));
+        btn6.addActionListener(e -> appendToInputField("6"));
+        btn7.addActionListener(e -> appendToInputField("7"));
+        btn8.addActionListener(e -> appendToInputField("8"));
+        btn9.addActionListener(e -> appendToInputField("9"));
+        btn0.addActionListener(e -> appendToInputField("0"));
+
+        btnAdd.addActionListener(e -> setOperator("+"));
+        btnSubtract.addActionListener(e -> setOperator("-"));
+        btnMultiply.addActionListener(e -> setOperator("*"));
+        btnDivide.addActionListener(e -> setOperator("/"));
+
+        btnEqual.addActionListener(e -> calculateResult());
+        btnClear.addActionListener(e -> clearInput());
+
+        // 设置窗体
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(400, 400);
+        frame.add(inputField, BorderLayout.NORTH);
+        frame.add(panel);
+        frame.setVisible(true);
+    }
+
+    private void appendToInputField(String value) {
+        inputField.setText(inputField.getText() + value);
+    }
+
+    private void setOperator(String op) {
+        num1 = Double.parseDouble(inputField.getText());
+        operator = op;
+        inputField.setText("");
+    }
+
+    private void calculateResult() {
+        num2 = Double.parseDouble(inputField.getText());
+        double result = 0;
+
+        switch (operator) {
+            case "+":
+                result = num1 + num2;
+                break;
+            case "-":
+                result = num1 - num2;
+                break;
+            case "*":
+                result = num1 * num2;
+                break;
+            case "/":
+                if (num2 != 0) {
+                    result = num1 / num2;
+                } else {
+                    JOptionPane.showMessageDialog(frame, "错误：除数不能为零。");
+                    return;
+                }
+                break;
+        }
+        inputField.setText(String.valueOf(result));
+    }
+
+    private void clearInput() {
+        inputField.setText("");
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(SimpleCalculator::new);
+    }
+}

src/compute/javaCompute.java

@@ -1,13 +0,0 @@
-package compute;
-
-/**
- * ClassName:javaCompute
- * Package: compute
- * Description:
- * Author Pjj
- *
- * @Create 2024/10/10 16:21
- * @Version 1.0
- */
-public class javaCompute {
-}