如题，java自带的swing控件太难看，有没有比较成熟的开源的界面库？
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- Java code
// in EDT:try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}catch(Exception ex) { // ...}
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http://docs.oracle.com/javase/tutorial/uiswing/lookandfeel/nimbus.html
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http://www.open-open.com/61.htm