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Vandiyadevan senthan

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since Nov 11, 2003
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Recent posts by Vandiyadevan senthan

Dear All,

I have a problem in downloading the data in an excel sheet using a 'html link' from an .jsp page when retrieving more records especially. In fact the java class calls the Powerbuilder object reside on middleware server for retrieving the data from the database(resides on dedicated server) and receive the data in the form of Binary large object.

For instance, it downloads only partial records eg., 500 and then following contains the error message like "Http/1.1 500 Internel server error:ISAPI Plugin error message cannot continue" and the remaining of the records missed in the report.

I am using Weblogic server as app/web server.Whether any settings needs to be changed in it?

What could be the reason for getting this error frequently whenever downloading more records say 900 or 1000 and more?

Appreciate your valuable suggestion on this.

Thanks.
14 years ago
JSP
Dear All,

I am a having one doubt while making a connection to a database.

********************************************
// Variables or reference
Connection con=null;
Statement stmt=null;
ResultSet rs=null;

//Db connection
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc dbc:abc");
stmt=con.createStatement();
rs=stmt.executeQuery("Select * from <table>");

****************************************************

In this,Connection,Statement and resultset are all interfaces.And moreover,the methods such as createStatement(),executeQuery() are all empty only in Connection Interface and Statement Interface respectively.

Being a method which is defined in interfaces are empty or abstract by default,

if that is the case ,How can we use these here.
(createStatement(),executeQuery())?

Where and all the implementation of these methods..


Pls explain these....

Warm Regards,
Senthan.
Dear All,

What is Daemon thread?Can we say public static void main() is of this type?

Thanks in advance.
Senthan
Dear ALL,

Does anyone can explain whats about 'Weak Reference'(weakHahMap) and what is the benefit of using this over others?

Thanks in advance,
Senthan
16 years ago
Hi Scott/Jesper,

Thanx a lot for our valuable response..

Kind Regards,
Senthan
Dear All,

Can we load more than one JDBC driver in my program?If yes, how can it be possible?If any one did, could you pls share any sample code if you have?

Alternatively ,will it throw outofMemory exception?

Thanks in Advance,
Senthan
Dear All,

Could you pls let me know the difference between these two methods(ejbCreate() & ejbPostCreate() methods)?When & What will be happened when ejbPostCreate() called by the container?

Thanks in Advance
Senthan
Hi All,

I am learning ejb recently.While doing so,I got one doubt about the difference between Stateful Session Bean and Stateless Session Bean.

How the Bean state is maintained in Stateful Session Bean during method calls?Is there any special utilities available for doing these?

Need your help to proceed further...

Thanks & Regards,
Senthan.
Dear ALL,

Could you pls anyone explain about 'Daemon Thread' ?And where is it used?

Kind regards,
Senthan
Dear ALL,

Could you please tell which JDBC driver is fast and having better performance when comparing?

Regards,
Senthan
Hi All,

Could you please advice me whether can we include image using <%@include %> tag in jsp?
ie.,<%@include file="../images/image.jpg"%>.I tried ,but i could not.

But when I include that image in html file and after trying with this code ie.,<%@ include file="<filename>.html" %>(included image in html page using <img> tag.It works fine.

Pls clear this.

Warm Regards,
Senthan
16 years ago
JSP
Hi All,

Can we include more than one Forward sub tag in an action tag.
If yes, how many can we include?

Regards,
Senthan
16 years ago
Hi Dittmer,

Thanx a lot.

Kind Regards,
Senthan
16 years ago
Dear All,

Could you pls explain about JRE & JVM ?
Appreciate your valuable feedback.

Regards,
Senthan
16 years ago
Goodday to all,

I have one ques with me abt the functionality of few methods in servletRequest interface.

When we will we use doTrace() & doOptions() methods in real time application?

Appreciate your valuable feedback on this.

Best Regards,
Senthan
16 years ago