Java中的LookAndFeel

Java'中的几种Look and Feel

1、Metal风格 (默认) 　　

　　String lookAndFeel = "javax.swing.plaf.metal.MetalLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

2、Windows风格   

　　String lookAndFeel="com.sun.java.swing.plaf.windows.WindowsLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

3、Windows Classic风格   

　　String lookAndFeel = "com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

4、Motif风格   

　　String lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

5、Mac风格 (需要在相关的操作系统上方可实现)   

　　String lookAndFeel = "com.sun.java.swing.plaf.mac.MacLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

6、GTK风格 (需要在相关的操作系统上方可实现)   

　　String lookAndFeel = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel"; UIManager.setLookAndFeel(lookAndFeel);

7、可跨平台的默认风格   

　　String lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName(); UIManager.setLookAndFeel(lookAndFeel);

8、当前系统的风格   

　　String lookAndFeel = UIManager.getSystemLookAndFeelClassName(); UIManager.setLookAndFeel(lookAndFeel);

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　　在Java中让用户能够动态地更改应用的外观，可以给用户更好地体验，具体的实现方式是：    

　　1，先使用UIManager.setLookAndFeel(String s)方法设定对应的外观    

　　2，再使用SwingUtilities.updateComponentTreeUI(Component c)方法立刻更新应用的外观    

　　这两个类均在javax.swing包中， 参考代码如下：

publicvoid actionPerformed(ActionEvent e) { 
    String lnfName =null; 
    if (e.getActionCommand().equals("Metal")) {  
       lnfName ="javax.swing.plaf.metal.MetalLookAndFeel"; 
    }
    elseif (e.getActionCommand().equals("Motif")) {       
       lnfName ="com.sun.java.swing.plaf.motif.MotifLookAndFeel"; 
    }
    else{ 
       lnfName ="com.sun.java.swing.plaf.windows.WindowsLookAndFeel"; 
    }
    try{ 
       UIManager.setLookAndFeel(lnfName); 
       SwingUtilities.updateComponentTreeUI(frame); 
    }catch (UnsupportedLookAndFeelException ex1) { 
       System.err.println("Unsupported LookAndFeel: "+ lnfName); 
    }catch (ClassNotFoundException ex2) { 
        System.err.println("LookAndFeel class not found: "+ lnfName); 
   }catch (InstantiationException ex3) { 
        System.err.println("Could not load LookAndFeel: "+ lnfName); 
    }catch (IllegalAccessException ex4) {     
    System.err.println("Cannot use LookAndFeel: "+ lnfName); 
    }
}