感謝大佬：https://blog.csdn.net/u010022051/article/details/52671860
注：具體詳情請查閱Java API文檔
/**
* 設置圖形界面外觀
* java的圖形界面外觀有3種,默認是java的金屬外觀,還有就是windows系統,motif系統外觀.
* 1、Metal風格 (默認) UIManager.setLookAndFeel(“javax.swing.plaf.metal.MetalLookAndFeel”);
* 2、Windows風格 UIManager.setLookAndFeel(“com.sun.java.swing.plaf.windows.WindowsLookAndFeel”);
* 3、Windows Classic風格 UIManager.setLookAndFeel(“com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel”);
* 4、Motif風格UIManager.setLookAndFeel(“com.sun.java.swing.plaf.motif.MotifLookAndFeel”);
* 5、Mac風格 (需要在相關的操作系統上方可實現) String lookAndFeel = “com.sun.java.swing.plaf.mac.MacLookAndFeel”;UIManager.setLookAndFeel(lookAndFeel);
* 6、GTK風格 (需要在相關的操作系統上方可實現) String lookAndFeel = “com.sun.java.swing.plaf.gtk.GTKLookAndFeel”;UIManager.setLookAndFeel(lookAndFeel);
* 7、可跨平台的默認風格 String lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName(); UIManager.setLookAndFeel(lookAndFeel);
* 8、當前系統的風格 String lookAndFeel = UIManager.getSystemLookAndFeelClassName(); UIManager.setLookAndFeel(lookAndFeel);
這是設置圖形界面外觀的.java的圖形界面外觀有3種,默認是java的金屬外觀,還有就是windows系統,motif系統外觀.
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
這是把外觀設置成你所使用的平台的外觀,也就是你這個程序在哪個平台運行,顯示的窗口,對話框外觀將是哪個平台的外觀.
補充：
https://blog.csdn.net/changemyself/article/details/675473
https://blog.csdn.net/sinat_37765046/article/details/79077644
https://blog.csdn.net/starcrm/article/details/52576379
Substance使用： https://blog.csdn.net/nospeak/article/details/83802445
Substance下載：https://www.mvnjar.com/org.java.net.substance/substance/jar.html