[Solved] Why do we use String docType in java? also tell me their advantages? [duplicate]

Question

Web pages are written in HTML. At the top of an HTML page, there should be a document type declaration, that describes exactly which variant of HTML is used (unfortunately, because of historical reasons, there are different variants / versions of HTML being used around the web).

A servlet is a software component that runs inside a servlet container. The servlet container receives HTTP requests from a browser and calls the servlets that are deployed in it to handle these requests. The servlet produces output to be sent back to whoever made the request (usually a web browser). The output is often in HTML.

So, the servlet needs to output the doctype because that’s just part of the HTML page that it produces.

Accepted Answer

Web pages are written in HTML. At the top of an HTML page, there should be a document type declaration, that describes exactly which variant of HTML is used (unfortunately, because of historical reasons, there are different variants / versions of HTML being used around the web).

A servlet is a software component that runs inside a servlet container. The servlet container receives HTTP requests from a browser and calls the servlets that are deployed in it to handle these requests. The servlet produces output to be sent back to whoever made the request (usually a web browser). The output is often in HTML.

So, the servlet needs to output the doctype because that’s just part of the HTML page that it produces.