请问如何设置java UI的MacLookAndFeel风格！

Question

public void setLookAndFeel(){
    try{
      //UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
      UIManager.setLookAndFeel("javax.swing.plaf.mac.MacLookAndFeel");
      SwingUtilities.updateComponentTreeUI(this);
    }catch(Exception ex){
      System.out.print("Failed!");
    }
  }
当采用windows风格的时候，是好的；
当采用mac风格是，却打印“Failed”！

Answer 1

public void setLookAndFeel(){
    try{
      //UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
      UIManager.setLookAndFeel("javax.swing.plaf.mac.MacLookAndFeel");
      SwingUtilities.updateComponentTreeUI(this);
    }catch(Exception ex){
      System.out.print("Failed!");
    }
  }
当采用windows风格的时候，是好的；
当采用mac风格是，却打印“Failed”！