Remember the simple method of JSP built-in objects (original)

First, I declare that this method is only intended to make it easier to mechanically remember those objects. After analyzing and understanding the Servlet compiled into. java by jsp (the preferred choice for SUN enterprise-level applications), we will know what these objects are.

Remember the word parscope (meteorological radar) oscilloscope.
It is exactly the first letter of several objects, among which exception is included in the specification of jsp (first choice for SUN Enterprise Applications) 1.2.
Page
Application
Request (response)
Session
Config
Out
PageContext
Exception

I hope to help you.