高晨纲提交

jisuanji11/Calculator.java

@@ -0,0 +1,35 @@
+package jisuanji11;
+
+public class Calculator {
+    // 加法
+    public double add(double a, double b) {
+        return a + b;
+    }
+
+    // 减法
+    public double subtract(double a, double b) {
+        return a - b;
+    }
+
+    // 乘法
+    public double multiply(double a, double b) {
+        return a * b;
+    }
+
+    // 除法
+    public double divide(double a, double b) {
+        if (b == 0) {
+            throw new ArithmeticException("除数不能为零");
+        }
+        return a / b;
+    }
+
+    // 取余
+    public double modulus(double a, double b) {
+        if (b == 0) {
+            throw new ArithmeticException("除数不能为零");
+        }
+        return a % b;
+    }
+}
+

jisuanji11/CalculatorGUI.java

@@ -0,0 +1,160 @@
+package jisuanji11;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class CalculatorGUI extends JFrame implements ActionListener {
+    private JTextField display;
+    private JPanel panel;
+    private JButton[] numberButtons;
+    private JButton[] functionButtons;
+    private JButton addButton, subButton, mulButton, divButton, modButton, equalsButton, clearButton;
+    private Calculator calculator;
+
+    public CalculatorGUI() {
+        calculator = new Calculator();
+        setTitle("Simple Calculator");
+        setSize(400, 500);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setLocationRelativeTo(null);
+
+        display = new JTextField();
+        display.setEditable(false);
+        display.setFont(new Font("Arial", Font.BOLD, 24));
+        add(display, BorderLayout.NORTH);
+
+        panel = new JPanel();
+        panel.setLayout(new GridLayout(5, 4, 10, 10));
+
+        // 数字按钮
+        numberButtons = new JButton[10];
+        for (int i = 0; i < 10; i++) {
+            numberButtons[i] = new JButton(String.valueOf(i));
+            numberButtons[i].setFont(new Font("Arial", Font.BOLD, 24));
+            numberButtons[i].addActionListener(this);
+            panel.add(numberButtons[i]);
+        }
+
+        // 功能按钮
+        addButton = new JButton("+");
+        subButton = new JButton("-");
+        mulButton = new JButton("*");
+        divButton = new JButton("/");
+        modButton = new JButton("%");
+        equalsButton = new JButton("=");
+        clearButton = new JButton("C");
+
+        addButton.setFont(new Font("Arial", Font.BOLD, 24));
+        subButton.setFont(new Font("Arial", Font.BOLD, 24));
+        mulButton.setFont(new Font("Arial", Font.BOLD, 24));
+        divButton.setFont(new Font("Arial", Font.BOLD, 24));
+        modButton.setFont(new Font("Arial", Font.BOLD, 24));
+        equalsButton.setFont(new Font("Arial", Font.BOLD, 24));
+        clearButton.setFont(new Font("Arial", Font.BOLD, 24));
+
+        addButton.addActionListener(this);
+        subButton.addActionListener(this);
+        mulButton.addActionListener(this);
+        divButton.addActionListener(this);
+        modButton.addActionListener(this);
+        equalsButton.addActionListener(this);
+        clearButton.addActionListener(this);
+
+        panel.add(addButton);
+        panel.add(subButton);
+        panel.add(mulButton);
+        panel.add(divButton);
+        panel.add(modButton);
+        panel.add(equalsButton);
+        panel.add(clearButton);
+
+        // 空白按钮占位
+        JButton space1 = new JButton(" ");
+        JButton space2 = new JButton(" ");
+        panel.add(space1);
+        panel.add(space2);
+
+        add(panel, BorderLayout.CENTER);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        for (int i = 0; i < 10; i++) {
+            if (e.getSource() == numberButtons[i]) {
+                display.setText(display.getText() + i);
+            }
+        }
+
+        if (e.getSource() == addButton) {
+            currentOperation = '+';
+            firstNumber = Double.parseDouble(display.getText());
+            display.setText("");
+        } else if (e.getSource() == subButton) {
+            currentOperation = '-';
+            firstNumber = Double.parseDouble(display.getText());
+            display.setText("");
+        } else if (e.getSource() == mulButton) {
+            currentOperation = '*';
+            firstNumber = Double.parseDouble(display.getText());
+            display.setText("");
+        } else if (e.getSource() == divButton) {
+            currentOperation = '/';
+            firstNumber = Double.parseDouble(display.getText());
+            display.setText("");
+        } else if (e.getSource() == modButton) {
+            currentOperation = '%';
+            firstNumber = Double.parseDouble(display.getText());
+            display.setText("");
+        } else if (e.getSource() == equalsButton) {
+            secondNumber = Double.parseDouble(display.getText());
+            double result = 0;
+            switch (currentOperation) {
+                case '+':
+                    result = calculator.add(firstNumber, secondNumber);
+                    break;
+                case '-':
+                    result = calculator.subtract(firstNumber, secondNumber);
+                    break;
+                case '*':
+                    result = calculator.multiply(firstNumber, secondNumber);
+                    break;
+                case '/':
+                    try {
+                        result = calculator.divide(firstNumber, secondNumber);
+                    } catch (ArithmeticException ex) {
+                        display.setText("错误: 除数不能为零");
+                        return;
+                    }
+                    break;
+                case '%':
+                    try {
+                        result = calculator.modulus(firstNumber, secondNumber);
+                    } catch (ArithmeticException ex) {
+                        display.setText("错误: 除数不能为零");
+                        return;
+                    }
+                    break;
+            }
+            display.setText(String.valueOf(result));
+            currentOperation = '\0'; // 重置操作符
+        } else if (e.getSource() == clearButton) {
+            display.setText("");
+            currentOperation = '\0'; // 重置操作符
+            firstNumber = 0;
+            secondNumber = 0;
+        }
+    }
+
+    private char currentOperation = '\0';
+    private double firstNumber = 0;
+    private double secondNumber = 0;
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            CalculatorGUI calculatorGUI = new CalculatorGUI();
+            calculatorGUI.setVisible(true);
+        });
+    }
+}