What is the difference between JDK and JRE? - Web Development Discussion Boards

Anonymous20-Sep-02 1:12

20-Sep-02 1:12

hi...

i am having a class which contains 2 listbox and one textbox..i want to send data to this textbox from another appln..so can u tell how to get the handle for the textbox alone..i don't have nuch knowldege in java...i am working in VC++

How to use JSP or Javascript to get resolution rate?

George Ma19-Sep-02 19:22

George Ma

19-Sep-02 19:22

Hi, everyone!

How to use JSP or Javascript to get resolution rate
(for example, 800*600, 1024*768, ... )?

Cheers,
George

Re: How to use JSP or Javascript to get resolution rate?

Paul Watson19-Sep-02 21:19

Paul Watson

19-Sep-02 21:19

George Ma wrote:
How to use JSP or Javascript to get resolution rate
(for example, 800*600, 1024*768, ... )?

screen.width and screen.height, but only in IE.

It is not 100% accurate though and I don't think there is a 100% accurate way of doing it apart from embedding some Java Applet into the page (which would be overkill.)

Paul Watson
Bluegrass
Cape Town, South Africa

Re: How to use JSP or Javascript to get resolution rate?

George Ma20-Sep-02 2:37

George Ma

20-Sep-02 2:37

Thanks, Paul!

Your codes works fine! Smile | :)

Cheers,
George

Pop up a child page at the specified location of parent page.

George Ma19-Sep-02 17:43

George Ma

19-Sep-02 17:43

Hi, everyone!

In the parent page, I want to pop up a child page at the
specified location of the parent page and have a specified
width and height.

How to use JSP to do it?

Cheers,
George

Re: Pop up a child page at the specified location of parent page.

MHeckman22-Sep-02 12:45

MHeckman

22-Sep-02 12:45

George,

I the result you want can be achieved by using javascript on the client.

Have a look at the window object: showModalDialog and showModelessDialog and using an IFrame in the pop-up child window. (I recommend the IFrame because it allows you to treat the content like a regular web page but the entire child window can be made modal to the parent window...

I hope this helps.

Michael Heckman

Re: Pop up a child page at the specified location of parent page.

George Ma27-Sep-02 4:12

George Ma

27-Sep-02 4:12

Thanks, MHeckman pal!

Your method is nice!

Cheers,
George

What is the difference between JDK and JRE?

George Ma19-Sep-02 4:01

George Ma

19-Sep-02 4:01

Hi, everyone!

I noticed that in java.sun.com, for each type
of OS, there are two materials deals with Java
to download, they are JRE and JDK.

My question is, what is the difference between
JRE and JDK?

If I just want to Programming with Java, I think
I only need to download JDK. Am I correct?

Cheers,
George

Re: What is the difference between JDK and JRE?

David Salter19-Sep-02 11:22

David Salter

19-Sep-02 11:22

The JRE is the Java Runtime Environment and the JDK is the Java Development Kit.

You would use the JDK to write and run software and you would use the JRE to run it.

Dave.

Re: What is the difference between JDK and JRE?

George Ma19-Sep-02 17:18

George Ma

19-Sep-02 17:18

Thanks, Dave pal!

I have got the point.

Cheers,
George

Re: What is the difference between JDK and JRE?

HoseaH19-Sep-02 20:51

HoseaH

19-Sep-02 20:51

JDK (Java Development Kit) is what is needed to develop and deploy java application i.e. a kind-of-interpreter/compiler for Java since it contains the compilers and debuggers. Its needed by the Java Developer/programmer.
JRE(Java Runtime Environment is to be used by the Java application user and consists of the Java Virtual Machine, the Java platform core classes, and supporting files - hence JRE is neede d to run Java Application

Re: What is the difference between JDK and JRE?

George Ma20-Sep-02 2:34

George Ma

20-Sep-02 2:34

Thanks, Hoseah pal!

I have understood the concept.

Cheers,
George

A good book on Client/Server developpment

Olivier REIX19-Sep-02 2:26

Olivier REIX

19-Sep-02 2:26

I am looking for a good book on Client/Server development (not Web developpment).
If it is applied to Windows and VC++, it is even better.

Any suggestion ?

calling a subprocedure

mcm19-Sep-02 2:04

mcm

19-Sep-02 2:04

i am coding for an online survey (in VBScript). on the click of the submit button, i wish for a function to be called which will check to see have all fields been filled out and if not, a message box to appear. here is a snippet of the code:
...survey....
<%
Sub Validate_onClick
'ERROR CATCHING
'question 2
If (Request("People") <> "") AND (Request.Form("Specify") <> "") Then
MsgBox "Please enter value for Q2"

End if

End Sub
%>

however, the code is not working as the message box is not appearing...what am i doing wrong?
thank you!

Re: calling a subprocedure

Paul Watson19-Sep-02 3:30

Paul Watson

19-Sep-02 3:30

mcm wrote:
what am i doing wrong?
thank you!

You are confusing client side with server side.

When you use the <% and %> block declarations you are specifying that all code within that block is processed on the server and NOT sent to the client as is.

So in fact when you have the onclick="Validate()"> code firing off there is not function Validate to call because it was "left" behind on the server. Also you cannot get server side code to show an alert box on the client side directly.

So, this is how you do what you want to do.

<script language="javascript>
function Validate()
{
//ERROR CATCHING
//question 2
if (document.People == "" || AND document.Specify == "")
{
    alert("Please enter value for Q2");
    return false;
}else{ return true;}
}
</script>

<input TYPE=RESET name="btnAdd" value="Reset" onclick="return confirm('Are you sure you wish to reset?');"><input TYPE="submit" name="btnAdd" value="Submit" onclick = "Validate()">

So basically you are mixing up your client side code (JavaScript) and your server side code (ASP.)

Paul Watson
Bluegrass
Cape Town, South Africa

IHTMLAnchorElement --- Help please

Gegzy19-Sep-02 0:55

Gegzy

19-Sep-02 0:55

Hi
Scenario:
I have a web page which is updated at very regular intervals. This page contains various links which change throughout the course of the day. My project is using MFC.

Problem:
I am using IHTMLElementCollection to get a list of anchors (<a>) which is working OK. I can obtain each anchor from this collection by assigning to IHTMLAnchorElement.

I need two bits of information. Firstly, the HREF from each anchor (which I can easily obtain by calling GetHref()).

The second piece of info I need is the text that the HREF is associated with...

For Example
.
.
<a href="www.sample-link.com">CLICK ME NOW!!!</a>

A call to GetHref() returns me "www.sample-link.com". What I'm also after is the text "CLICK ME NOW!!!"

Any ideas on how to do this?

Thanks In Advance

Gegzy

Re: IHTMLAnchorElement --- Help please

Gegzy19-Sep-02 11:06

Gegzy

19-Sep-02 11:06

Tiz OK!

I've sorted it out (I think)

When getting the anchor to the current element using IHTMLAnchorElement, I needed to use IHTMLElement::GetInnerText() of the same element.

Worked a treat!

Would like some advice to see if this is the correct way or if there is a better way.

Thanks!

Gegzy

Re: IHTMLAnchorElement --- Help please

Stephane Rodriguez.19-Sep-02 19:35

Stephane Rodriguez.

19-Sep-02 19:35

::GetInnerHTML(...) retrieves the full HTML code between begin and end tags, not only raw text without formatting. Depending on the application, one may use this or the other.

MS quote (http://www.microsoft.com/ddk) : As of September 30, 2002, the Microsoft® Windows® 2000 DDK, the Microsoft Windows 98 DDK, and the Microsoft Windows NT® 4.0 DDK will no longer be available for purchase or download on this site.

SQL login problem from ASPNET

leppie18-Sep-02 23:34

leppie

18-Sep-02 23:34

Hi
I'm running the SQL Desktop engine, and I'm try to fill a dataset with some data.

Now I get this error.

Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'LEPPIE\ASPNET'.

Source Error:

Line 29: {
Line 30: // Put user code to initialize the page here
Line 31: sqlDataAdapter1.Fill(userDataSet1);
Line 32: DataGrid1.DataSource = userDataSet1;
Line 33: DataGrid1.DataMember = "Users";

Source File: d:\inetpub\wwwroot\XXXXX\webform1.aspx.cs Line: 31

This I do in the PageLoad Event.

How do I give the necesary right to the ASPNET user to access SQL? Or is this a no-no? I'm very new to the web side of .NET and I'm not sure if this is the correct way to do it either Confused | :confused:

Any help appreciated Smile | :)

Solved

leppie19-Sep-02 1:01

leppie

19-Sep-02 1:01

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer\YourMSSQLServer\LoginMode

from 1 to 2.

And restart SQL Smile | :)

SMTP in Windows2000 Adv Server

hien_ng8018-Sep-02 23:24

hien_ng80

18-Sep-02 23:24

Hi all.
I'm going to develope a SMTP Mail service. But I don't know how to configure SMTPMailServer in IIS Snapnin (MMC- in "Windows 2000 Advanced Server").
My Computer is only local.DO I need "Microsoft Exchange Server" for the SMTP Service.
And Could you tell me how to Add an email Account into the server that is configured.

Thanks in advance.

NNH

Host ASP in my app?

CherezZaboro18-Sep-02 9:20

CherezZaboro

18-Sep-02 9:20

Is this doable? How?
Please help! Confused | :confused:

error handling and message boxes

mcm18-Sep-02 5:59

mcm

18-Sep-02 5:59

i am coding in VBScript. i am coding for an online survey. for error handling (eg if the user forgets to fill out a field), is it possible to ensure all fields have been filled out BEFORE clicking the submit button? i wish for the user to be notified via a MESSAGE BOX, how would i go about this(using VBScript)?
thank you!

Re: error handling and message boxes

Megan Forbes18-Sep-02 8:27

Megan Forbes

18-Sep-02 8:27

This doesn't work very well using VBScript - I've been down this rocky path before. However, contrary to popular opinion, VBScript & good ol' pain in the butt Javascript work very nicely on the same page.

Don't kill yourself trying to do something we all believe should have been integrated nicely into VBScript but wasn't. Just build your whole page in VBScript, but get your submit button to call a traditional javascript validation function.

You will sleep better this way Cool | :cool:

The following statement about your geekness is true. The previous statement about your geekness is not true.

GCS/IT/P d- s: a- C++++$ UL+>++++ P+ L++$ E- W+++$ N !o K+ w++$ O---- M--
PS- PE Y+ PGP--- t !5 X- tv b+++ DI++ D+ G++ e++ h--- r+++

retaining state for checkboxes and radio buttons

mcm17-Sep-02 23:03

mcm

17-Sep-02 23:03

i have a series of checkboxes and radio buttons. when the user submits the information it goes to another page, where it is validated. however, if there is a mistake in the data, a hyperlink brings the user back to the original page. however, the checkboxes and radio buttons are back to their default state - how do i fix this? (i have used the session variable for the text boxes). here is an example of the checkboxes and radio buttons:
4. How would you describe your role within the organisation?

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