There is a method inherited from java.awt.Component:
void addFocusListener(FocusListener l)
It adds the specified focus listener to receive focus events from this component when this component gains input focus.
You can get the detail from the JDK Doc.
void addFocusListener(FocusListener l)
It adds the specified focus listener to receive focus events from this component when this component gains input focus.
You can get the detail from the JDK Doc.
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货