Исходный JSP код

<form action = "forCheckbox.jsp" method = "POST" target = "_blank">
             <input type = "checkbox" name = "maths" checked = "checked" /> Maths
             <input type = "checkbox" name = "physics"  /> Physics
             <input type = "checkbox" name = "chemistry" checked = "checked" /> Chemistry
             <input type = "submit" value = "Select Subject" />
</form>

Сгенерированный HTML-код

<ul>
    <li><p><b>Maths Flag:</b> <%= request.getParameter("maths")%></p></li>
    <li><p><b>Physics Flag:</b><%= request.getParameter("physics")%></p></li>
    <li><p><b>Chemistry Flag:</b><%= request.getParameter("chemistry")%></p></li>
</ul>

Исходный JSP код

<form action = "forReadingAllParam.jsp" method = "POST">
        <input type = "checkbox" name = "maths" checked = "checked" /> Maths
        <input type = "checkbox" name = "physics"  /> Physics 
        <input type = "checkbox" name = "chemistry" checked = "checked" /> Chemistry
        <input type = "submit" value = "Select Subject" />
</form>


Сгенерированный HTML-код

<table width = "100%" border = "1" align = "center">
   <tr bgcolor = "#949494"> 
       <th>Param Name</th> 
       <th>Param Value(s)</th> 
   </tr>
<%
Enumeration paramNames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
    String paramName = (String)paramNames.nextElement();
    out.print("<tr><td>" + paramName + "</td>\n");
    String paramValue = request.getParameter(paramName);
    out.println("<td> " + paramValue + "</td></tr>\n");
}
%>
</table>

Исходный JSP код

<form action = "cookiesForNames.jsp" method = "POST">
       First Name: <input type = "text" name = "first_name"><br />
       Last Name:  <input type = "text" name = "last_name" />
                   <input type = "submit" value = "Submit" />
</form>
Сгенерированный HTML-код

<%
  // Create cookies for first and last names.
  Cookie firstName = new Cookie("first_name", request.getParameter("first_name"));
  Cookie lastName = new Cookie("last_name", request.getParameter("last_name"));

  // Set expiry date after 24 Hrs for both the cookies.
  firstName.setMaxAge(60*60*24);
  lastName.setMaxAge(60*60*24);

  // Add both the cookies in the response header.
  response.addCookie( firstName );
  response.addCookie( lastName );
%>
<ul>
    <li><p><b>First Name:</b> <%= request.getParameter("first_name")%></p></li>
    <li><p><b>Last  Name:</b> <%= request.getParameter("last_name")%> </p></li>
</ul>

Исходный JSP код
<%
  Cookie cookie = null;
  Cookie[] cookies = null;

  cookies = request.getCookies();

  if( cookies != null ) 
     {
       out.println("<h2> Found Cookies Name and Value</h2>");

       for (int i = 0; i < cookies.length; i++) {
          cookie = cookies[i];
          out.print("Name : " + cookie.getName( ) + ",  ");
          out.print("Value: " + cookie.getValue( )+" <br/>");
       }
     } else out.println("<h2>No cookies founds</h2>");
%>

package by.gsu.servlets;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class ChooseColorServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String color = request.getParameter("color");
        String name = request.getParameter("name");

        String greeting = null;
        if (name != null) {
            greeting = "Hello, " + name + "!";
        }

        if (color == null) {
            color = "black";
        }

        request.setAttribute("greeting", greeting);
        request.setAttribute("color", color.toLowerCase());

        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/servlet-course/chooseColor.jsp");
        dispatcher.forward(request,response);
    }
}

Расположение кода в трёх разных местах (jsp, классы и web.xml) диктуется спецификацией сервлетов 

<c:choose>
   <c:when test="{pageContext.request.serverName}" />
           <c:set var = "port" value="{context}/servletcourse/allParameters.jsp?i=Roman&mother=Anna&father=Misha
      </c:when>
   <c:otherwise>
        <ul>
            <c:forEach var="item" items="{item.key} - ${item.value}
               </li>
            </c:forEach>
        </ul>
  </c:otherwise>
</c:choose>
...
<button class="button-source">
  <a href="${context}/sources/by/gsu/servlets/UrlParametersServlet.java"  target="_blank">Показать в отдельной вкладке</a>
</button>
...
<div class="kotlin-code" data-highlight-only folded-button="true">
      <pre>  <code class="hljs language-text" id="jspCode"> </code> </pre>
</div>
...
<button class="button-source">
  <a href="${context}/sources/servlet-course/allParameters.jsp"  target="_blank">Показать в отдельной вкладке</a>
</button>
...
<script>
  $( document ).ready(function() {
       codeLoad("${context}/sources/by/gsu/servlets/UrlParametersServlet.java", $("#javaCode"));
       codeLoad("${context}/sources/servlet-course/allParameters.jsp", $("#jspCode"));
                      });
</script>

package by.gsu.servlets;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class UrlParametersServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        Map<String, Integer> result = new HashMap<>();
        Map<String, String[]> params = request.getParameterMap();
        for (Map.Entry<String, String[]> entry : params.entrySet()) {
            result.put(entry.getValue()[0], entry.getValue()[0].length());
        }
        request.setAttribute("result", result);
        RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/servlet-course/allParameters.jsp");
        dispatcher.forward(request,response);
    }
}

GAL.showHTML(frameCentral,this.currentTask.HTML);

frameCenral.document.body.innerHTML = "";
frameCentral.document.location.href = "taskview.jsp?cid="+this.currentTask.courseId+"&nid="+this.position.current+”&showcfg=1”;

      if (word = "MEM_LIMIT") then
'        memT = trim(right(text,len(text) - posr))
'        if memT= "" then memT = "65 536"

<tr bgcolor=white><td width=150><b><font size=-1> 
Время на тест:</font></b></td><td width=100><font size=-1> <% = timT %>
сек</font></td></tr>
<tr bgcolor=white><td><b><font size=-1> 
Ввод:</font></b></td><td><font size=-1> 
<% = inpT %></font></td></tr>
<tr bgcolor=white><td><b><font size=-1> 
Вывод:</font></b></td><td><font size=-1> 
<% = outT %></font></td></tr>

<tr bgcolor=white><td><b><font size=-1> 
Память:</font></b></td><td><font size=-1> 
<% = memT %> байт</font></td></tr>

<%@ include file='paramparse.jsp' %>

int showcfg = getParam("showcfg", request);

if (showcfg == 1 && new Course(courseId, user).ShowTaskCfg) 
  { //Выводим информацию из task.cfg
            
    TaskCfg TCFG = new TaskCfg(node.getTaskID());
    double TimeLimit = TCFG.getTimeLimit();
    NumberFormat nf = NumberFormat.getInstance();
    nf.setMinimumFractionDigits(0);
    nf.setMaximumFractionDigits(2);

    <table cellpadding=0 cellspacing=1 bgcolor=black align=right>
      <tr><td colspan=2 bgcolor=white><font size=-1> task.cfg</font> </td> </tr>
      <tr bgcolor=white>
          <td width=150> <b><font size=-1> <dl:res key="time limit"/></font></b></td>
          <td width=100> <font size=-1> <%= TimeLimit %><dl:res key="sec"/></font></td></tr>

      <% if (!TCFG.isINTERACTIVE()) { %>     ...

      <tr bgcolor=white>
        <td width=150> <b><font size=-1> <dl:res key="memory limit"/></font></b> </td>
        <td width=100> <font size=-1> <%= nf.format(TCFG.getMemLimit()/(1024*1024))+" Mb" %></font></td>
      </tr>
    </table>

<%@taglib prefix="dl" uri="/WEB-INF/tld/dl.tld"%>

function doLoadFrameAbstract(name, text) {
    var fr = name(name);if(isVar(fr) && fr.length > 0) {
        var doc = fr[0].contentDocument;
        if (!isVar$(doc)) {
            doc = fr[0].Document;
        } 
        doc.body.innerHTML = text;
    }
}
</script>

<body   
   onload="initDiffStudy" 

<table width="100%"  ... >
   <tr><td width="30%" ...>  <iframe name="dsFrameLeftList" ... </iframe>  </td>
       <td width="30%" ">    <iframe name="dsFrameLeft" onload="initLeftFrame()"></iframe>  </td>
       <td width="30%"       <iframe name="dsFrameDebts" </iframe> </td>
       <td> <table width="100%" height="100%" border="1px" cellpadding="0px" cellspacing="0px">
               <tr><td height="35px"     <iframe name="dsFrameTop" </iframe></td></tr>
               <tr><td>                  <iframe name="dsFrameCentral"></iframe> </td></tr>
               <tr><td height="53px"     <iframe name="dsFrameBottom" </iframe></td></tr>
             </table>
       </td>
   </tr>
</table>

1.	Выкачать DLVM, запустить у себя на машине
2.	Выкачать софт 
- IntelliJ IDEA - выкачать/запустить
- JDK - скачать и настроить 
        - Tortoise SVN - выкачать/запустить, интегрировать с  IntelliJ IDEA
3.  Выкачать исходники - научиться исправлять/отлаживать
        - скачать актуальные исходники DL
        - подключить проект с исходниками DL к Intellij Idea
        -сделать так, чтобы DLVM подхватила ваши изменения
       - возможности отладки 
4. Перенос исправлений на боевую DL
        - сделать заявку в Jira
        - сделать патч для Code review
        - сделать Commit после Code review
        - попросить сделать Deploy  

    if (!perm.submitAllowed) { %>
        <frameset rows="20,*" framespacing="0"  frameborder="1" border="true">
            <frame name="taskheader" src="taskheader.jsp?nid=<%=nodeId%>&cid=<%=courseId%>" marginwidth="10" marginheight="0" scrolling="no" frameborder="0">
            <frame name="taskview" src="taskview.jsp?nid=<%=nodeId%>&cid=<%=courseId%>" marginwidth="10" marginheight="10" scrolling="auto" frameborder="0">
        </frameset>
<%  }

    } else { // программирование и т.п. - upload
    %>
    <frameset rows="10%,*,50" framespacing="0"  frameborder="1" border="true">
      <frame name="taskheader" src="taskheader.jsp?nid=<%=nodeId%>&cid=<%=courseId%>&showcfg=1" marginwidth="10" marginheight="0" scrolling="no" frameborder="0">
      <frame name="taskview" src="taskview.jsp?nid=<%=nodeId%>&cid=<%=courseId%>&showcfg=1" marginwidth="10" marginheight="10" scrolling="auto" frameborder="0">	 
	<%if(submitAllowed==1){%>
        <% String showEditor = request.getParameter("showeditor") == null ? "" : "&showeditor"; %>
      <frame name="taskfooter" src="taskfooter.jsp?nid=<%=nodeId%>&cid=<%=courseId%><%=showEditor%>" marginwidth="10" marginheight="0" scrolling="no" frameborder="0">
	<%}%>
    </frameset>    

getCurrentHTML: function() {
        if (this.position.current == this.currentTask.nodeId &&
            this.position.current != -1) {
            if (this.currentTask.waitAnswer) {
                setTimeout("DS.getCurrentHTML()",1000);
            } else {
                   GAL.showHTML(frameCentral,this.currentTask.HTML);
                   if (isVar(DS.waitStop))DS.waitStop();if(isVar(frameLeft._uSel)) { frameLeft._uSel(this.position.current); }
                this.currentTask.nodeId = -1;
            }
        } else if (this.position.current != -1) {
            this.currentTask.nodeId = this.position.current;
            
            this.currentTask.nextFunction = function () { DS.getCurrentHTML(); };
            this.currentTask.startLoad();
            
            frameTop.document.body.innerHTML = "";
            frameBottom.document.body.innerHTML = "";
            frameTop.document.location.href = "taskheader_ds.jsp?cid="+this.currentTask.courseId+"&nid="+this.position.current+"&dsid="+DS.ID;
            frameBottom.document.location.href = "taskfooter_ds.jsp?cid="+this.currentTask.courseId+"&nid="+this.position.current+"&dsid="+DS.ID;
        } else {
            frameBottom.document.location.href = "taskfooter_ds.jsp?cid="+this.currentTask.courseId+"&nid="+this.position.current+"&dsid="+DS.ID;
        }
    }