public class BasicSliderUI.FocusHandler extends Object implements FocusListener
 这个类应该被视为一个“受保护”的内部类。 仅在Foo的Foo类中Foo 。 
| Constructor and Description | 
|---|
| FocusHandler() | 
public void focusGained(FocusEvent e)
FocusListener 
          focusGained在接口 
            FocusListener 
           public void focusLost(FocusEvent e)
FocusListener复制 
          focusLost在接口 
            FocusListener 
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