利用javaGUI知识编写一个摄氏度和华氏度的转换

好的，下面是一个简单的Java GUI程序，可以将摄氏度转换为华氏度，以及将华氏度转换为摄氏度。代码如下：

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

public class TemperatureConverter extends JFrame implements ActionListener {
    private JLabel celsiusLabel;
    private JLabel fahrenheitLabel;
    private JTextField celsiusField;
    private JTextField fahrenheitField;
    private JButton convertCelsiusToFahrenheitButton;
    private JButton convertFahrenheitToCelsiusButton;

    public TemperatureConverter() {
        super("Temperature Converter");

        // Create the components
        celsiusLabel = new JLabel("Celsius:");
        fahrenheitLabel = new JLabel("Fahrenheit:");
        celsiusField = new JTextField(10);
        fahrenheitField = new JTextField(10);
        convertCelsiusToFahrenheitButton = new JButton("Convert C to F");
        convertFahrenheitToCelsiusButton = new JButton("Convert F to C");

        // Add action listeners to the buttons
        convertCelsiusToFahrenheitButton.addActionListener(this);
        convertFahrenheitToCelsiusButton.addActionListener(this);

        // Create a panel for the input fields
        JPanel inputPanel = new JPanel(new GridLayout(2, 2));
        inputPanel.add(celsiusLabel);
        inputPanel.add(celsiusField);
        inputPanel.add(fahrenheitLabel);
        inputPanel.add(fahrenheitField);

        // Create a panel for the buttons
        JPanel buttonPanel = new JPanel(new FlowLayout());
        buttonPanel.add(convertCelsiusToFahrenheitButton);
        buttonPanel.add(convertFahrenheitToCelsiusButton);

        // Add the panels to the frame
        add(inputPanel, BorderLayout.CENTER);
        add(buttonPanel, BorderLayout.SOUTH);

        // Set the frame properties
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(300, 120);
        setLocationRelativeTo(null); // Center the window
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == convertCelsiusToFahrenheitButton) {
            double celsius = Double.parseDouble(celsiusField.getText());
            double fahrenheit = celsius * 9 / 5 + 32;
            fahrenheitField.setText(String.format("%.2f", fahrenheit));
        } else if (e.getSource() == convertFahrenheitToCelsiusButton) {
            double fahrenheit = Double.parseDouble(fahrenheitField.getText());
            double celsius = (fahrenheit - 32) * 5 / 9;
            celsiusField.setText(String.format("%.2f", celsius));
        }
    }

    public static void main(String[] args) {
        new TemperatureConverter();
    }
}

运行程序后，将会看到一个包含两个文本输入框和两个按钮的窗口。在输入框中输入摄氏度或华氏度，然后单击相应的按钮，即可将温度转换为另一种单位并显示在另一个文本输入框中。