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Get Request Parameters in a Servlet

import java.io.IOException; import java.io.PrintWriter; import java.util.Enumeration; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Main extends HttpServlet {   protected void service(HttpServletRequest request, HttpServletResponse response)       throws ServletException, IOException {     response.setContentType("text/html;charset=UTF-8");     PrintWriter out = response.getWriter();     Enumeration en = request.getParameterNames();     while (en.hasMoreElements()) {       String paramName = (String) en.nextElement();       out.println(paramName + " = " + request.getParameter(paramName) + "<br/>");     }   } }