How to translate code bewteen JSP to Servlet?

• JSP scriptlet (i.e., <% scriptlet %>) and experssion (i.e., <%= expression%>), when translated into a servlet, will end up in the body of doGet or doPost method.
• JSP declaration (i.e., <%! declaration %>), when translated into a servlet, will end up being instance variables or methods in the servlet class.
• A variable defined inside of a JSP declaration could translate to an instance variable and a variable defined inside of a JSP scriptlet could translate to a local variable in doGet or doPost method.
• You may have jspInit() or jspDestroy() methods defined in the JSP declaration. They are equivalent to Servlet's init() and destory() methods.

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