Design View blank, JSP and Java views fine

I'm running JSC 2.1, I have 2 gig of memory. I'm not able to see the design view on one of my jsps, but the error message in the log isn't very helpful.
I did a cut-and-paste from another jsp view in another file -- is there something else I have to copy? If so, what and where to?
Any help appreciated.
Stack trace is below (I get five of the same errors with different line numbers; I'm only including one stack trace here):
java.lang.NullPointerException
at com.sun.rave.designer.DesignerTopComp.componentShowing(DesignerTopComp.java:868)
at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:233)
at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:205)
at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:480)
at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:224)
at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:93)
at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:274)
at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:215)
at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:139)
at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:270)
at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:215)
at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:250)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:234)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
at java.awt.Component.processMouseEvent(Component.java:5488)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
at java.awt.Component.processEvent(Component.java:5253)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1774)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
[catch] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

I figured out the problem. The Java code had gotten out of sync with the jsp code, so the design view didn't know how to render the components. It's a pain to fix, but it can be done. Go through your jsp code component by component, and make sure there are declarations, getters, and setters for each id in the components. Also make sure the java code doesn't contain declarations, getters, and setters for any components that you didn't create (you can see these in the jsp view at the bottom of the file).

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<%@ page contentType="text/html; charset=windows-1256" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1256" />
<title>test</title>
</head>
<body>
<%
//Mazin B. Jabarin 20210464
//Testing JSP - MySQL Server Driver
String connectionURL = "jdbc:mysql://localhost:3306/EDCDB?user=root;password=0000";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
%>
<%
try{
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection(connectionURL, "root", "0000");
statement = connection.createStatement();
rs = statement.executeQuery("SELECT * FROM a");
while (rs.next()) {
out.println(rs.getString("id")+"<br>");
rs.close();
catch(Exception e)
out.print("Error : "+e.getMessage());
%>
</body>
</html>
Now this JSP File always returns (-1) ???? !!!!!!!
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" import="VX.T2" import="java.util.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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try
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out.println("Result Still : "+t2.getCard("1","a"));
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%>
</body>
</html>
++++++++++++++++++++++++++++
any one can help me please :(
i use tomcat as web-application
and i install jdk 1.5
also JBulder 7
(now i supposed that the JBulder make some conflict, so i uninstalled it but still Not Working) ...
before one year i was working just like this way and it was working
but now i dont know what is the problem
i am really need help.

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Hi,
I have a JSP file that I need to create 3 drop lists (choice list). If one of these 3 choice lists is selected, then the other 2 need to deselected and disabled. I need help with the code.
Do I use JavaScript or Java? Below is the html code. I would really appreciate any help on this.
Thanks,
BK

<html>
<head><title>New Window Example</title>
<STYLE TYPE="text/css" >
td { font-size: 11px }
th { font-size: 11px }
body { background-color: #666666 }
</STYLE>
<SCRIPT>
/* When press CANCEL button, the dialog box disappears. */
     function Closer()
          window.close();
     function checkForm()
     var f = document.queryForm;
* Checks if an account number is entered. If not, an error message dialog pops up
* to the user.
* Checks if a business unit was chosen. If not, an error message dialog pops up
* to the user.
     buChoice = f.buList.selectedIndex;
          if (f.buList.options[buChoice].value == "")
               alert("Please choose a business unit.");
               f.buList.focus();
               f.toDate.select();
               return false;
     * This <code>statusMsg()</code>is to give the user feedback while data is being entered by
     * creating a status message. This script lets you modify what is displayed in this bar,
     * giving you the ability to send messages to the user while he interacts with filling out
     * the fields.Status Messages are the phrases you see in the status bar at the bottom of a
     * window or dialog.
     * For instance: For the account number text field, as long as the cursor is in this text
     * field of Account #, there's a message at the bottom of the dialog box informing, " Enter
     * only numeric characters."
     * @param msgType
     * @ mesage the data structure to store the messages sent to the users
     function statusMsg(msgType)
var message = "";
if (msgType == "integer")
message = "Enter numeric characters.";
if (msgType == "integerDate")
message = "between 1990 and 2010";
if (msgType == "ListBU")
message = "Choose which BU?";
if (msgType == "ListMonth")
message = "Choose a month."
window.defaultStatus = message;
window.status = message;
</script>
</head>
<body onFocus="statusMsg('')">
<FORM NAME= "queryForm" onSubmit = "return checkForm()" ACTION="Welcome.html">
<TABLE Border="0" cellspacing="2" cellpadding="4">
<TR>
<TD ALIGN=left>Company Code:</TD>
<TD WIDTH="20%"><SELECT Name=choiceMonths1 size=1 onFocus="statusMsg('ListMonth')">
<option value="" selected>
<OPTION Value="01">01
<OPTION Value="02"> 02
<OPTION Value="03"> 03
<OPTION Value="04"> 04
<OPTION Value="05"> 05
<OPTION Value="06"> 06
</SELECT></TD>
     <TR>
     <TD ALIGN=left>RegionID:</TD>
     <TD><select name=buList onFocus="statusMsg('ListBU')"> // onChange = "selectionMade()"
     <option value="" selected>
     <option value=Norht ALIGN="left">North
     <option value=East ALIGN="left">East
          <option value=South ALIGN="left">South
     <option value ALIGN="left">North</select></TD></TR>
<TR>
     <TD ALIGN=left>Business Unit ID:</TD>
     <TD><select name=buList onFocus="statusMsg('ListBU')"> // onChange = "selectionMade()"
     <option value="" selected>
     <option value=TBR ALIGN="left">TBR
     <option value=BAL ALIGN="left">BAL
     <option value ALIGN="left">ABH</select></TD></TR>
</TR></TABLE>
<TABLE>
<tr>
<TD><INPUT TYPE=submit Value=Submit></TD>
<TD><INPUT TYPE=button NAME=btnClose VALUE=Cancel SIZE=20 ALIGN= center onClick="Closer()"></TD>
     <TD><input type=reset VALUE= Clear Query SIZE=20 ALIGN= right></TD></TR></TABLE>
</FORM>
</BODY>
</html>

What i've done in the past in this same situation is to use radio buttons alongside my dropdown lists. Whenever a radio button is selected, the corresponding dropdown list is enabled, and the other lists are all disabled. Not too hard to implement in Javascript either. Use an onClick() and set the other fields to disabled, using document.form.field.disabled = true. (and obviously, set the one you want to disabled = false). But obviously, you're still going to want to know which one to retrieve later, right? Use a hidden tag and in the same Javascript onClick, you can dynamically set the variable to whatever you want. Here's a pretty compact example using 2 fields
function enable(field)
     if(field == "firstName")
          document.myForm.firstName.disabled = false;
          document.myForm.lastName.disabled = true;
          document.myForm.searchBy.value = "firstName"
     else
          document.myForm.firstName.disabled = true;
          document.myForm.lastName.disabled = false;
          document.myForm.searchBy.value = "lastName"
}Or something like that. Yeah, I know it's not the greatest javascript in the world, but i was just simplifying things to give an example. Hope this helps somewhat :)
Simon

Better Design for EJB 3 and Java Web Dynpro

Hi all,
When using EJB Model on CE, to each method a Request and Response are generated. To a CRUD i've 4 methods.
I've a Foo (JPA Entity).
public Foo create(Foo)
public Foo update(Update)
public void remove(Foo)
public List<Foo> findBy...
I think that i could use a Single view for both create and update method. But i will need a separated context objects to each function.
Request_<Bean>_create
Request_<Bean>_update
What is better in this case? a single method createOrUpdate on my EJB? Or a View to each operation?
Best regards

Hi all,
Just to share my decision:
My EJB continue with the methods.
public Foo create(Foo)
public Foo update(Update)
public void remove(Integer)
public List<Foo> findBy...
Was generated one Request to each method.
Request_<Bean>_create
Request_<Bean>_update
I've mapped the both on my Component controller and have created on view to edit and create a new record.
When the record already exists i'm initializing the Request_<Bean>_createElement with record data, when is a new i've just initialize the new Foo object and put on currentElement of update.
On the generic save method of controller, a test is done to decide if the Request<Create> or Request<Update> model Object.
Best regards

How can I change between JSP and Java in the page language attribute

Does any one know the answer to this? I am trying to Switch between the 2 in the middle of the page. I want to include a file that uses <%@ page language = "JAVA" %> but the main mage uses Java Script. How can I switch it for this one file. I can't find the answer anywhere. Thanks for your time, and please help me. Also can some one post a good link for Session Tracking. I can't find much good information on that. Thanks again.
Eagles757(JAY)

Wow this didn't make sense in so many ways. It's truly bordering on nonsense. I think it's written in English.
<%@ page language="Java" %>This is optional. JSPs don't use any language other than Java. This is known as a JSP Directive. This line will be processed by the JSP/Servlet engine, and you won't see it in your output. If JSP ever supported a language other than Java, this would be where you would change it.
<script type="text/javascript">

</script>You can include a block like this in your JSP file. The JSP/Servlet engine will not process this script block at all (unless you include JSP <% %> tags somewhere in there, in which case they will be processed before the response is sent back to the web browser). This script block is where JavaScript goes. This code will be executed on the client's browser.
This is about as clear as I can make things given how muddled your question is. Please ensure you understand the basic differences between JSP, Java, JavaScript, HTML, Servlet engine, web browser before proceeding. Understand what code executes where, and in what order.
Brian

Plain JSP and java: can any one help .

I explained below the logic
each declaration & loop has comment
if possible please try it
After you run this code it will work fine as many as entris you want
Just make some changes remove comment marked with @ then run again the same program for more than 26 entries it will not work ..
I want this code to work for any no of entries user selected . minimum 30-35
<%@ page contentType="text/html;charset=windows-1252"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<script type="text/Javascript" language="Javascript">
function goto()
document.forms[0].submit();
</script>
</head>
<body>
<%
/* this block declares the array elements for storing the values when page is submitted*/
     String len="";
    String arr_sr_no[]=null ;
     String arr_frmdeler_nm[]=null;
     String arr_frm_dest[]=null;
      String arr_todeler_nm[]=null;
      String arr_to_dest[]=null;
      String arr_mode_trans[]=null;
      String arr_fare[]=null;
   /* When page get submitted values are stored in theese array elements */
      arr_sr_no=request.getParameterValues("sr_no");
      arr_frmdeler_nm=request.getParameterValues("frm_dlr_name");
      arr_frm_dest=request.getParameterValues("frm_dest");
      arr_todeler_nm=request.getParameterValues("to_dlr_name");
      arr_to_dest=request.getParameterValues("to_dest");
      // @ arr_mode_trans=request.getParameterValues("transport_mode");
      arr_fare=request.getParameterValues("fare");
   /* Array of serial number is null for first time when page gets loaded so i initialized
     the len="1";
    if(arr_sr_no==null)
           len="1";
/* when array of serial is not null when page gets loaded
     i initialized len with the length of the array of serial number i.e arr_sr_no[]
        if(arr_sr_no!=null)
           int i = arr_sr_no.length;
           len = Integer.toString(i);
        // Converted String len into Integer
         int add_cnt = Integer.parseInt(len);
       /* this line gets the value from Select combo which select no. of rows to be generated
        for table entries */
        String str2=request.getParameter("no_statements");
        String str3="";
      //when str2 is not null initialize the str3 with str2.
      // This is for that how many rows we have selected in <select> tag
      //else part is for first time when page is loaded
      // so that one row will be defaultly created
       if(str2!=null)
          str3=str2;
        else
          str3="1";
      //converted String to integer..
         int entry=Integer.parseInt(str3);
%>
<form name="myform" >
<table width="500" border="1" >
    <tr>
       <%--This is Select tag which Selects the No of Rows whch onChange calls goto()
           and page gets submitted
       --%>
           <select name="no_statements" onChange="goto()">
                  <%
                      int cnt;
                     for( cnt=1;cnt<=30;cnt++)
                  %>
                      <option value="<%=cnt%>" <% if(entry==cnt) out.println("selected");%>> <%=cnt%> </option>
                  <%
                  %>
                  </select>
           </td>
<%
/* This for loop gets the iterates for Selected no of Rows in <SELECT> tag
   "entry" variable is initialized above for selected rows
       for (int i=1;i<=entry;i++)
              String strdlr_name="";
              String strfrm_dest="";
              String strtodeler_nm="";
              String strto_dest="";
               String trans_mode="0";
                String strfare="";
        /* This condition checks for any array is not null*/
        if(arr_sr_no!=null)
                /* this array checks for each time that i is less than add_cnt
                   where add_cnt is length of arr_sr_no[] (which is in turn length
                   of each array we have stored above)
                   This cond'n ensures that no null pointer assignment is done
                if(i<=add_cnt)
                   /* we initializes each element of each array serially to
                    local String variables */
                   strdlr_name=arr_frmdeler_nm[i-1];
                   strfrm_dest= arr_frm_dest[i-1];
                   strtodeler_nm= arr_todeler_nm[i-1];
                   strto_dest= arr_to_dest[i-1];
                   // @ trans_mode=arr_mode_trans[i-1];
                    strfare =arr_fare[i-1];
                  }// end of inner if
              }// end of outer if
        %>
     <tr>
            <%-- here we assign local string values to <input> box this will
                 this will ensure that all entris will stay intact when page
                  gets submitted
            --%>
            <td><input name="sr_no" type="text" value="<%=i%>" size="2"></td>
            <td><input name="frm_dlr_name" type="text" value="<%=strdlr_name%>" size="16"></td>
            <td><input name="frm_dest" type="text" value="<%=strfrm_dest%>" size="11"></td>
            <td><input name="to_dlr_name" type="text" value="<%=strtodeler_nm%>" size="18"></td>
            <td><input name="to_dest" type="text" value="<%=strto_dest%>" size="11"></td>
           <%-- @ <td><select name="transport_mode" >
                    <option value="0" <%if("0".equals(trans_mode)) out.println("selected"); %>>--Select--</option>
                    <option value="1" <%if("1".equals(trans_mode)) out.println("selected"); %>>Air</option>
                    <option value="2" <%if("2".equals(trans_mode) )out.println("selected"); %>>Train</option>
                    <option value="3" <%if("3".equals(trans_mode)) out.println("selected"); %>>Bus</option>
                    <option value="4" <%if("4".equals(trans_mode)) out.println("selected"); %>>Taxi</option>
                    <option value="5" <%if("5".equals(trans_mode)) out.println("selected"); %>>Two Wheeler</option>
                    <option value="6" <%if("6".equals(trans_mode)) out.println("selected"); %>>Auto Rikshaw</option>
                 </select>
          --%>
       <td><input name="fare" type="text" value="<%=strfare%>" size="4"></td>
       </tr>
        <%
        }// End of For loop
        %>
</table>
</form>
</body>
</html>Hope you will reply
it is very urgent

No need to post it again. Particularly when it is right near the top.
http://forum.java.sun.com/thread.jspa?threadID=765816&tstart=0

Design View blank, JSP and Java views fine

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