The life span of the data saved to a session is, at most, from the moment the user accesses a domain to the moment when a user times out after a preset amount of time of inactivity.
Each event in a xev session is printed out with a high-resolution time value.
xev会话中的每个事件都是随高精度的时间值一同输出的。
3
Whereas entity beans rose quickly to prominence and then fell just as quickly out of favor, the popular acceptance of session beans and JDBC has been accumulating slowly and steadily over time.