下列WindowListener接口方法中当窗口被激活时调用的方法是( )。

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问题下列WindowListener接口方法中当窗口被激活时调用的方法是( )。

选项 A、windowActivated(WindowEvent)
B、windowClosed(WindowEvent)
C、windowOpened(WindowEvent)
D、windowDeactivated(WindowEvent)

答案1

解析本题考查关于窗口监听器接口中基本方法的知识。选项A正确，window Activated(WindowEvent)方法在窗口激活时被调用到：选项B错误，windowClosed (WindowEvent)方法在窗口已经被关闭时调用：选项C错误，windowOpened(WindowEvem)方法在窗口已经打开时被调用到；选项D错误， windowDeactivated(WindowEvent)方法与窗口不再激活时被调用到。故本题答案是A。

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本试题收录于：二级Java题库NCRE全国计算机二级分类