title: Swing UIManager default system look and feel
body: <p>I'm writing a Java application and I'm giving it a custom look and feel using the <code>UIManager</code> of Swing. There's a method named <code>UIManager.getSystemLookAndFeelClassName()</code> that returns the default look and feel of a system. I would like to know what look and feel it returns as default, when no system look and feel was detected, is it the Metal look and feel of Java itself?</p>