Answer 1

Answer 2

我想尝试：

for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
             UIManager.setLookAndFeel(info.getClassName());
                        System.out.println("CHOSEN THIS");
              break;
         }

Answer 3

Answer 4

要设置Nimbus外观，请在主方法中添加此代码

    try {
        for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (Exception e) {
       e.printStackTrace();
    }