AppInitParam.java
import javax.servlet.http.*;
import java.io.*;
import javax.servlet.*;
import java.util.*;
public class AppInitParam extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
ServletContext context = getServletContext();
String databasetype = context.getInitParameter("databasetype");
PrintWriter pw = response.getWriter();
pw.println("<html>");
pw.println("<h1> databasetype= "+databasetype +"</h1>");
pw.println("</html>");
}
}
Web.xml
<web-app>
<context-param>
<param-name>databasetype</param-name>
<param-value>mysql</param-value>
</context-param>
<servlet>
<servlet-name>AppInitParam</servlet-name>
<servlet-class>AppInitParam</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>AppInitParam</servlet-name>
<url-pattern>/AppInitParam</url-pattern>
</servlet-mapping>
</web-app>
