单选题在public HttpSession getSession(boolean bool)的方法定义中,当bool为false时表明()A直接返回会话对象B当服务器已经创建了会话对象就返回该对象,否则返回nullC直接返回nullD当服务器已经创建了会话对象就返回该对象,否则新建一个会话对象并返回
单选题
在public HttpSession getSession(boolean bool)的方法定义中,当bool为false时表明()
A
直接返回会话对象
B
当服务器已经创建了会话对象就返回该对象,否则返回null
C
直接返回null
D
当服务器已经创建了会话对象就返回该对象,否则新建一个会话对象并返回
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