package roseindia.webContext;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns="/SetInitParameterExample",
		initParams={
		@WebInitParam(name="middleName", value="Kumar")
				   }
		   )
public class SetInitParameterExample extends HttpServlet
{
	private static final long serialVersionUID = 1L;
       
    public void doGet(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException
     {
		ServletConfig config= getServletConfig();
		
		ServletContext context= getServletContext();
		context.setInitParameter("firstName", "Bipul");
		
		response.setContentType("text/html");
		PrintWriter out= response.getWriter();
		
		String contextParam= context.getInitParameter("firstName");
		out.println("Context Parameter Value = "+contextParam);
		
		String configParam= config.getInitParameter("middleName");
		out.println("<br>Config Parameter Value = "+configParam);
		
		context.setInitParameter("lastName", "Choudhary");
		String contextParam1= context.getInitParameter("lastName");
		
		out.println("<br>Context Parameter Value = "+contextParam1);
		boolean bol= context.setInitParameter("lastName", "Kumar");
		
		if(bol!=true)
		{
			out.println("<br>you can not replace the value with same key");
		}
		else
		{
			out.println("Value is replaced.");
			out.println("And Replaced value is : "+context.getInitParameter("lastName"));
		}				
	}
	public void doPost(HttpServletRequest request, HttpServletResponse response)
	 throws ServletException, IOException
	 {
		doGet(request, response);
	 }
}