我可以在同一个Swing应用程序中使用两种不同的外观吗？

import javax.swing.*;
import javax.swing.plaf.metal.MetalLookAndFeel;
import javax.swing.plaf.nimbus.NimbusLookAndFeel;

JFrame frame = new JFrame("Swing Application");

JButton switchLookAndFeelButton = new JButton("Switch Look and Feel");

switchLookAndFeelButton.addActionListener(e -> {
    // 获取当前外观
    LookAndFeel currentLookAndFeel = UIManager.getLookAndFeel();
    // 判断当前外观是否为Nimbus外观
    if (currentLookAndFeel instanceof NimbusLookAndFeel) {
        // 如果是Nimbus外观，则切换为Metal外观
        try {
            UIManager.setLookAndFeel(new MetalLookAndFeel());
        } catch (UnsupportedLookAndFeelException ex) {
            ex.printStackTrace();
        }
    } else {
        // 如果不是Nimbus外观，则切换为Nimbus外观
        try {
            UIManager.setLookAndFeel(new NimbusLookAndFeel());
        } catch (UnsupportedLookAndFeelException ex) {
            ex.printStackTrace();
        }
    }
    // 更新窗口的外观
    SwingUtilities.updateComponentTreeUI(frame);
});

frame.add(switchLookAndFeelButton);
frame.pack();
frame.setLocationRelativeTo(null);

try {
    UIManager.setLookAndFeel(new MetalLookAndFeel());
} catch (UnsupportedLookAndFeelException ex) {
    ex.printStackTrace();
}
SwingUtilities.invokeLater(() -> {
    frame.setVisible(true);
});