java gui模拟实现一个可视化简单计算器

好的，我可以为您展示一个简单的Java GUI计算器的实现过程。首先，我们需要创建一个包含数字和操作符的按钮的GUI界面，然后将这些按钮与计算器的操作相对应。下面是一个简单的实现示例：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Calculator extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1L;
    private JTextField display = new JTextField("0");
    private double result = 0;
    private String operator = "=";
    private boolean calculating = true;

    public Calculator() {
        super("Calculator");
        setSize(350, 250);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(4, 4));

        String buttonLabels = "789/456*123-0.=+";
        for (int i = 0; i < buttonLabels.length(); i++) {
            char key = buttonLabels.charAt(i);
            if (key == ' ') {
                panel.add(new JLabel(""));
            } else {
                JButton button = new JButton(Character.toString(key));
                button.addActionListener(this);
                panel.add(button);
            }
        }

        getContentPane().add(BorderLayout.CENTER, panel);
        getContentPane().add(BorderLayout.NORTH, display);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent ae) {
        String currentButton = ae.getActionCommand();
        if ('0' <= currentButton.charAt(0) && currentButton.charAt(0) <= '9') {
            if (calculating) {
                display.setText(currentButton);
            } else {
                display.setText(display.getText() + currentButton);
            }
            calculating = false;
        } else {
            if (calculating) {
                if (currentButton.equals("-")) {
                    display.setText(currentButton);
                    calculating = false;
                } else {
                    operator = currentButton;
                }
            } else {
                double x = Double.parseDouble(display.getText());
                calculate(x);
                operator = currentButton;
                calculating = true;
            }
        }
    }

    public void calculate(double n) {
        if (operator.equals("+")) {
            result += n;
        } else if (operator.equals("-")) {
            result -= n;
        } else if (operator.equals("*")) {
            result *= n;
        } else if (operator.equals("/")) {
            result /= n;
        } else if (operator.equals("=")) {
            result = n;
        }
        display.setText("" + result);
    }

    public static void main(String[] args) {
        Calculator calculator = new Calculator();
    }
}

这个实现创建了一个包含数字和操作符的按钮的GUI界面，当用户点击这些按钮时，程序会根据输入执行计算，并将结果显示在屏幕上。此外，这个实现还包括了一些错误检查和异常处理，以确保程序的正确性和稳定性。