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“out” is implicit object of which class?

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“out” is implicit object of which class?

(a) javax.servlet.jsp.PrintWriter

(b) javax.servlet.jsp.SessionWriter

(c) javax.servlet.jsp.SessionPrinter

(d) javax.servlet.jsp.JspWriter

I have been asked this question in a job interview.

Asked question is from JSP Elements in chapter Session Management, JSP & API of Java

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The correct choice is (d) javax.servlet.jsp.JspWriter

Explanation: JspWriter object is referenced by the implicit variable out which is initialized automatically using methods in the PageContext object.

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