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Answer» Both are interfaces in the package javax.servlet.
- ServletConfig is a servlet configuration object. It is used by a servlet container to pass information to a servlet during initialization.
- The ServletConfig parameters are specified for a particular servlet and are UNKNOWN to other servlets.
- The ServletContext object is contained within the ServletConfig object. It is provided by the web SERVER to the servlet when the servlet is INITIALIZED.
- ServletContext is an interface which has a set of methods like getServletName(), getServletContext(), getInitParameter(), getInitParameterNames(). The servlet USES to interact with its servlet container.
- ServletContext is common to all servlets within the same web application. So, servlets use ServletContext to SHARE context information.
Both are interfaces in the package javax.servlet.
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