如何更改Java程序单个部分的外观

所有需要做的就是在创建JFileChooser对象时更改UIManager，然后将其设置回之前的状态，或者您可以仅捕获Exception，但这是一个不好的做法。

public void stuff(){    JFileChooser chooser = null;    LookAndFeel previousLF = UIManager.getLookAndFeel();    try {        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());        chooser = new JFileChooser();        UIManager.setLookAndFeel(previousLF);    } catch (IllegalAccessException | UnsupportedLookAndFeelException | InstantiationException | ClassNotFoundException e) {}    //Add whatever other settings you want to the method    chooser.showOpenDialog(frame);}