Vishwanath Krishnamurthi

I just looked it up. Looks with a MEAP subscription to a book, the reader would get to read the chapters as and when written by the author.
And once the whole book is completed, the subscriber receives the final copy.

What's interesting is to hear about the forums and how the reader could discuss with or post feedback to the author during the process.

Yay ! Being more involved than just "reading" - I'd like that

-Vishwa

SCWCD concentrates on the fundamentals of web-development. Servlets, JSPs, Filters etc..

But in real world, these alone won't be enough. And you'd most certainly be using a web-framework. So my recommendation would be to try out a project using a web-framework.
Spring-MVC is a popular choice on that. If you were looking for ideas on what a project could be on, some sort of e-commerce application would be a good start. Like a mini amazon.com

Congrats ! Have fun learning EJB !

To add to what Mohamed Sanaulla explained,

these are the things to remember-

Runtime polymorphism applies only to methods. Or in other words 'Dynamic method dispatch' is supported. (Finding the type of object at runtime and invoking the corresponding method)

In the case of variables, its always the 'reference type'. There's no such thing as 'Runtime Variable Dispatch'.. Everything is resolved at compile-time when it comes to variables

Now to shadowing:

What happens, if you have a variable by the same name in the superclass and the subclass and what if they were initialized with different values ?

Well, its all about the reference type with which the variable is accessed. If accessed with a reference of the superclass, you get the value you initialized with in the superclass
If accessed with a reference of the subclass, you get the value you intialized with in the subclass. The actual type of the object doesn't matter (Whichever subclass object be assigned to the reference). Only the reference type matters.

As to the word 'shadow'ing

To say that gearRatio is shadowed in SportsCar, it means that the superclass's value is bypassed and the new value defined in the SportsCar is used. The word 'overriding' is avoided here as 'overriding' is a term that is tightly used along with 'runtime polymorphism'. And that isn't the case here

-Vishwa

Rahul Sudip Bose wrote:
1.The web.txt file is blank

Try flushing the printWriter:

pw.flush();

Rahul Sudip Bose wrote:
I have a doubt, can i make a .xml file and write text to it OR, do i have to make a .txt file - write the text - and then rename it to .xml ?

Yes, You can create an xml file and write to it.

And one more thing, don't forget to close the PrintWriter

treat yourself

What have you tried so far ?

int a+=5 //would be equivalent to int a = a+5;
whereas,

int a=+5 //would be equivalent to int a=5;
i.e in "=+" is not a single Java operator. You should read it as assignment of a positive number.

like how

int a=-5; would mean assigning a negtive number

Hi John,

Overriding is only for methods. Not for instance fields.

PS: You might find it easier to paste the code and use code tags, than to post screenshots

Tim Hoang wrote:the code should stop after it hits the else

Then introduce a break statement like this:

else { System.out.println("This is the total: " + totalSum); break; }

Vishwa

Hi Jayesh,

You should get true if you did

System.out.println(s1.equals(s2));

Check how equals method differs from ==

Vishwa

Hi Jenna,
Green UML is neat eclipse plugin. One other choice would be Architexa
Apart from reverse engineering to get class or sequence diagrams, also consider writing unit / functional tests. It helps to understand a project faster

Vishwa

Sorry, I don't understand your question clearly. Typically you'd iterate through the recordset, create one DTO object corresponding to one row retrieved, and add that DTO to the ArrayList.
So If you have 100 rows retrieved by a query, then you'd have an ArrayList that contains 100 DTOs.

HTH,
Vishwa

Can you copy the c.tld file, place it in /META-INF and check ? to see if this URI is then found, or you are thrown a different error ?

Can you double-check the URI at the tld file in your JAR.. that it is indeed using

http://java.sun.com/jsp/jstl/core

and not

http://java.sun.com/jstl/core ?