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Tamer Badr

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since Feb 18, 2004
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Recent posts by Tamer Badr

Using nested brackets in EL does work fine [HFSJ (Chapter 8, page 376)]
There is no way to do it using standard actions, this is the main reason why we use EL [HFSJ (Chapter 8 page 364)].
[ October 18, 2007: Message edited by: Tamer Badr ]
I'm studying for the web application developer exam, I'm using Kathy Sierra book, I'm now at the chapter "Scriptless JSP", I studied the chapter and digested it very well, I also use JWebPlus to test myself after I finish an exam topic, I found that there are many questions about one attribute of jsp:useBean that is not covered in the book, the attribute is beanName, I knew what this attribute is used for, but I'm asking here if it's needed for the exam? If not, then this may make me a little suspicious about the testing engine I have, did anyone try it? How good is it?
Thanks, I did the URL method.
14 years ago
I want to access a web page that is located at another server in the web, I just know the page URL.
14 years ago
I need to access resources out of the servlet context, I know that RequestDispacher can only access resources in the same context.
This can easily be done using PHP or ASP, I just need to do it in servlets, I need to open a web page providing the page URL and get the contents of this page from inside the servlet (Server side include).
14 years ago
Yes, island objects are illegible for garbage collection, simply you draw the stack reference to the object, and draw a circle that is the heap, place the objects in the heap, and draw a line which represents the reference from the stack to the object, draw lines between objects in the heap, these are the references from the other objects.
Now when we say that a reference = null, delete the reference to that object from the stack, after all references are deleted, there will be just references from other objects in the heap, think about it, are any of these objects can be accessed?
The only way to access an object is from it's reference, no it has no reference in the stack, so they are not reachable, even they still have reference, but theses reference are from objects in the heap, which are in turn not accessible, so they all are useles, and just memory consuming.
I need to buy a book that covers the recent Java EE 5 web services topics including JAX-WS, JAXB, SAAJ, and JAXR.
15 years ago
I'm looking for HDLC programming system using Java, it may be software, hardware or both, anybody has an idea about HDLC with java.
I'm looking for HDLC programming system using Java, it may be software, hardware or both, anybody has an idea about HDLC with java.
15 years ago
The XML 141 was retird at July 14th, the new xml exam now is 142.
Hello Barry,
I have the book, I read the first chapter (the introduction), and it said that I have to have good knowledge of design patterns, and it refered to Head First Design Patterns book as a way to get better in patterns.
I know that design patterns can't be understood just by reading, but they need a lot of practice, most of the patterns I use now, I was using them before, but I didn't know that they are patterns untii reading a little bit about patterns, learning patterns by reading is not my way to learn them, I need to see them working in large systems, books have small programs that don't give you the real usage of patterns in real world.
So if the exam is focusing on the design patterns used in solving problems, then this may take some time to get it done the right way.
I'm SCJP 1.4, and has about 3 year-experience in developing Java desktop applications, I started using Java SE 5 six months a go, I have some knowledge of design patterns, I use some of them in developing my applications, the patterns I used are strategy, observer, decorator, factory, sigleton, and the state pattern.
I have good comman of swing, and layouts, I use border and gridbag layouts heavily in my designed applications, I also have good command of package, but not java.nio.
For the multithreading, I use it heavily also in my applications, but I don't use all the abilities of Java threads handling abilities.
I didn't use sockets for any of my projects, since all the connections I made where HTTP or HTTPs connections, and they both have their connection APIs, also the JDBC connections don't require you to use any ntwork code, so I didn't have to use sockets or RMI until now.
Do you think that I can do the test and succeed?
I'm making an applicatiuon using J2ME PIM optional API, PIM is not core MIDP API, so I have two choices, to combine it with the application as a library or check for it's existance on the deployment device before the application runs, as far as I know, that I can't add the PIM library to my application as a library, and when I try to do it gives me preverification error, the check for it is by retrieving the system property "microedition.pim.version", and from it's name it looks to be a java library, so it has to be pre-installed on the device.
I know that all 99% of devices have PIM, even the old non-java devics, I need to know about the availability of java PIM access API on nowadays phones, so when I make an application using J2ME PIM, then how it's going to be supported by phones?
15 years ago