WindowListener中可以实现窗口关闭功能的方法是【】A．public

问题单项选择题

WindowListener中可以实现窗口关闭功能的方法是【】

A．public void windowOpened(WindowEvent e)

B．public void windowClosed(WindowEvent e)

C．public void windowClosing(WindowEvent e)

D．public void windowDeactivated(WindowEvent e)

答案

参考答案：B

解析：本题考查事件监听器的概念。窗口事件接口WindowListener有几个关键方法，应该注意，如public void windowClosing(WindowEvent e)是把退出窗口的语句写在本方法中；public void windowOpened(WindowEvent e)是窗口打开时调用；public void windowClosed(WindowEvent e)是窗口关闭时调用，选项B正确：public void windowIconified(WindowEvente)是窗口图标化时调用；public void windowDeiconified (WindowEvent e)是窗口非图标化时调用：public void windowActivated(WindowEvent e)是窗口激活时调用；public void windowDeactivated(WindowEvent e)是窗口非激活时调用。