在Java中向面板添加颜色选择器

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

JPanel panel = new JPanel();
JColorChooser colorChooser = new JColorChooser();

colorChooser.setColor(Color.RED);

JButton button = new JButton("选择颜色");

button.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
        Color selectedColor = JColorChooser.showDialog(panel, "选择颜色", colorChooser.getColor());
        if (selectedColor != null) {
            panel.setBackground(selectedColor);
        }
    }
});

JFrame frame = new JFrame("颜色选择器示例");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(panel, BorderLayout.CENTER);
frame.getContentPane().add(button, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);