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• Map, Set use cases in a general web app

  - by user2541902

  I am currently working on my own Java web app (to be shown in interview to get a Java job). So I've not worked on Java in professional environment, so no guidance. I have database, entity classes, JPA relationships. Use cases are like, user has albums, album has pics, user has locations, location has co-ordinates etc. I used List (ArrayList) everywhere. I can do anything with List and DB, get some entry, find etc. For example, I will keep the list of users in List, then use queries to get some entry (why would I keep them in Map with id/email as key?). I know very well the working and features, implementing classes of Map, Set. I can use them for solving some algorithm, processing some data etc. In interviews, I get asked have you worked with these, where have you used them etc. So, Please tell me cases where they should be used (DB or any popular real use case).

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• Build & Deployment Guide for Service Bus Relay Project

  - by Michael Stephenson

  Ive recently published a sample guide based on a real-world project where we implemented an on-premise WCF routing solution to connect SAAS applications to our on premise line of business applications. The guide will discuss: How we configured and setup the infrastructure How we setup the on-premise server to listen to the service bus What software we used How we configured Windows Azure This contains some useful contextual information around the reference scenario and hopefull this will be very useful to others undertaking similar projects. Ive also included this on the technet wiki page for Windows Azure Service Bus resources: http://social.technet.microsoft.com/wiki/contents/articles/13825.windows-azure-service-bus-resources.aspx

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• Unleash the Power of JavaFX

  - by Angela Caicedo

  It seems that it was just yesterday that we were getting ready for JavaOne 2012.  Now it's over, but it's definitely a great time to go back and watch the sessions you missed, and learn some of the latest news about Java.   For this JavaOne, I presented two sessions and one HOL, all of them related to JavaFX: JavaFX Extreme GUI Makeover Building JavaFX Interfaces with the Real World Unleash the power of JavaFX If you couldn't join us for these sessions, just follow the links and you can watch the videos on demand. For the HOL I've created a repository at GitHub, as many of the attendees wanted to keep the material.   In this repository you can find the lab document, the NetBeans projects for each exercise and it's appropriate solution.  Hope you enjoy! I created and presented a HOL called:  Unleash the power of JavaFX.  In this blog entry I would like to provide you 

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• HTG Explains: What is DNS?

  - by Chris Hoffman

  Did you know you could be connected to facebook.com – and see facebook.com in your web browser’s address bar – while not actually being connected to Facebook’s real website? To understand why, you’ll need to know a bit about DNS. DNS underpins the world wide web we use every day. It works transparently in the background, converting human-readable website names into computer-readable numerical IP addresses. Image Credit: Jemimus on Flickr How To Switch Webmail Providers Without Losing All Your Email How To Force Windows Applications to Use a Specific CPU HTG Explains: Is UPnP a Security Risk?

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• Speak now! Call for Papers at Oracle Openworld is now open

  - by Jean-Pierre Dijcks

  Present Your Thoughts to Thousands of Oracle Customers, Developers, and Partners Do you have an idea that could improve best practices? A real-world experience that could shed new light on IT? The Oracle OpenWorld call for papers is now open. This is your opportunity to speak your mind to the world’s largest gathering of the most-knowledgeable IT decision-makers, leading-edge developers, and advanced technologists. So take a look at our criteria and join us at Oracle OpenWorld. We look forward to hearing from you. Register Early and Save See and learn about the newest products. Meet experts and business leaders. All for less. Register for Oracle OpenWorld before March 30, 2012, and you’ll save up to US$800 off the registration. Register now.

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• Silverlight 4 + RIA Services - Ready for Business: Authentication and Personalization

  To continue our series,  In real business applications our data is often very valuable and as such we need to know who is accessing what data and control certain data access to only users with privilege.  Luckily this is very easy to do with RIA Services.  For example, say we want to let only authenticated users access our data in this example.   That is as easy to accomplish as adding an attribute, see line 2 below.    1: [EnableClientAccess] 2: ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• My Favourite Two Buttons in Denali CTP1 SSIS

  In SSIS for SQL Server 2005 and SQL Server 2008 when you delete something from the design surface it is gone.  The only real way of getting the deleted item(s) back is to revert to a previous version of the package or to redo the deleted items manually.  Neither of these options is particularly great.  I have made this mistake before and cursed not having CTL+Z and CTL+Y.  Denali changes this.  We can now undo and redo.  Very very welcome.  Well done, finally, the SSIS team.

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• How much should I rely on Visual Studio's Auto Generated Code?

  - by Ant

  So I'm reading up on ASP.NET with VB.NET and I want to start making my own, professionally built website using ASP. I'm wondering though; I'm still using the basics so I'm really just a novice, but how much should I rely on Visual Studio to create my elements? Should I make my own text boxes and have my own login routine, or should I just use ASP's login features? I know eventually you have to use your own classes and such which is where the real coding comes in, but I'm not sure how relaible, flexible and secure the pre-wrote elements are? Any help would be greatly appreciated.

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• What is MVC, really?

  - by NickC

  As a serious programmer, how do you answer the question What is MVC? In my mind, MVC is sort of a nebulous topic — and because of that, if your audience is a learner, then you're free to describe it in general terms that are unlikely to be controversial. However, if you are speaking to a knowledgeable audience, especially an interviewer, I have a hard time thinking of a direction to take that doesn't risk a reaction of "well that's not right!...". We all have different real-world experience, and I haven't truly met the same MVC implementation pattern twice. Specifically, there seem to be disagreements regarding strictness, component definition, separation of parts (what piece fits where), etc. So, how should I explain MVC in a way that is correct, concise, and uncontroversial?

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• Performance Driven Manufacturing

  Manufacturers are searching for new, creative ways to address growing demands of global manufacturing. They want the latest tools and technologies to boost performance from their operations, suppliers, partners, distributors, and extended ecosystem, and they need global views for better visibility - both internally and across the extended supply chain. In addition, operations must move information more effectively to gain real-time insight into manufacturing shop floor status. Whether it's inside the plant or outside the traditional factory walls, manufacturers are searching for solutions to help them produce more for less, lower their total cost of ownership (TCO), and improve their return on investment (ROI).

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• What stack of technologies should I use for my online game?

  - by Vee Bee

  I built a TicTacToe game to learn the .Net MVC3 framework. The basic functionality works (display board, make a move, detect winning move etc.) What I'd like to do is make it a "real" application - well-architected and using the right technology at the right layer. For instance, I'm currently saving every move to the database via a service call, which feels klugey and may become a bottleneck if this was an MMO game. How do you determine a good architecture (or right set of technologies) to use in a situation like this? I'd like to learn not just what to do, but why certain decisions are better than others. I noticed a similar thread here but it just offered opinions without explaining WHY something would be better (e.g. why Node instead of MVC3, etc.)

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• IIS 6 nested virtual directory redirection

  - by threedaysatsea

  We're running IIS 6 on a WinServer2k3 box and we're having some trouble with the following problem: E-mails were sent out to users asking them to go to the following URL: alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue However, the URLS are actually supposed to be: server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue It's too late to recall all of the e-mails, and we'd like to redirect traffic to make this as seamless as possible for our users. The real problem here is that the server (server.contoso.com) is hosting the alias (alias.contoso.com) as a redirect thusly, and the existing redirect we need to keep functional: Default Web Site (server.contoso.com) --Directory1 --Directory2 --Directory3 Redirection to Directory3 (alias.contoso.com) --Essentially alias.contoso.com will take the user to server.contoso.com/Directory3 Is there any way to host a separate redirect inside of the existing redirect? We need to keep alias.contoso.com taking the user to server.contoso.com/Directory3 but also make alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue point to server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue Any tips? Is this even possible?

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• Looking for a 24 Hour project for multiple languages [closed]

  - by Daan Timmer

  Right two friends and I came up with this idea of having a 24h programming competition. Where we are going to meet at one place and program away for 24hours long. Though we need a 'project'. Something that needs to be made within 24h. Doesn't have to be a real thing, just a nice learning 'thing'. The rules that we setup for ourselves is that the project can be programmed in any language of our own choice. What I know is that one guy is a PHP enthousiastic, we've got a C#/.NET person. And I am quite easy in languages and speak quite a few (PHP/C#.net/C++STL/Python/JavaScript/Java). Anything really language specific is out of the question. Is there anyone who happens to have a great idea for this?

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• Partner Webcast – Oracle Coherence Applications on WebLogic 12c Grid - 21st Nov 2013

  - by Roxana Babiciu

  Oracle Coherence is the industry leading in-memory data grid solution that enables organizations to predictably scale mission-critical applications by providing fast access to frequently used data. As data volumes and customer expectations increase, driven by the “internet of things”, social, mobile, cloud and always-connected devices, so does the need to handle more data in real-time, offload over-burdened shared data services and provide availability guarantees.The latest release of Oracle Coherence 12c comes with great improvements in ease of use, integration and RASP (Reliability, Availability, Scalability, and Performance) areas. In addition it features an innovating approach to build and deploy Coherence Application as an integral part of typical JEE Enterprise Application.Read more here

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• Web-based data generator

  - by John Paul Cook

  One of my coworkers told me about Mockaroo , a web-based data generator. I needed some test data for upcoming blog posts, so I decided to give it a try. It’s pretty good. I had to use Firefox because of problems running Mockaroo on Internet Explorer 11. Using the defaults except for changing the format to SQL, it generated output that looked something like the following. Mockaroo is so good that it generates fake data that could accidentally be real, such as email addresses. Consequently, I edited...(read more)

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• Qualifying 'happiness' in software development?

  - by mummey

  It occurred to me today that often the real goal of questions asked on sites such as this one (where the questions tend to be more open-ended than say, SO) is for the OP to become happier upon achieving the result. We often excuse this by saying our desire is to be more productive or release a better product, but if you continue to look down this path you can determine that the OP seeks greater productivity or product-quality because those are important to his/her 'happiness'. With that in-mind I ask this: Have their been efforts to study software development from this perspective? In other words, what practises increase happiness in those who develop software as a career, and who, if anyone, has researched this specifically? As I mentioned above, they may include strategies that increase productivity or improve product quality, but by no means should they be limited to just those.

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• Abstract skill/talent system implementation

  - by kiliki

  I've been making small 2D games for about 3 years now (XNA and more recently LWJGL/Slick2D). My latest idea would involve some form of "talent tree" system in a real time game. I've been wracking my brain but can't think of a structure to hold a talent. Something like "Your melee attack is an instant kill if behind the target" I'd like to come up with an abstract object rather than putting random conditionals into other methods. I've solved some relatively complex problems before but I don't even know where to begin with this one. Any help would be appreciated - Java, pseudocode or general concepts are all great.

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• Why Java as a First Language?

  - by dsimcha

  Why is Java so popular as a first language to teach beginners? To me it seems like a terrible choice: It's statically typed. Static typing isn't useful unless you care a lot about either performance or scaling to large projects. It requires tons of boilerplate to get the simplest code up and running. Try explaining "Hello, world" to someone who's never programmed before. It only handles the middle levels of abstraction well and is single-paradigm, thus leaving out a lot of important concepts. You can't program at a very low level (pointers, manual memory management) or a very high level, (metaprogramming, macros) in it. In general, Java's biggest strength (i.e. the reason people use it despite the shortcomings of the language per se) is its libraries and tool support, which is probably the least important attribute for a beginner language. In fact, while useful in the real world these may negatives from a pedagogical perspective as they can discourage learning to write code from scratch.

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• PyQt design issues

  - by Falmarri

  I've been working on a my first real project using PyQt lately. I've done just a little bit of work in Qt for C++ but nothing more than just messing around. I've found that the Qt python bindings are essentially just a straight port of C++ classes into python, which makes sense. The issue is that this creates a lot of messy, unpythonic code. For example if you look at QAbstractItemModel, there's a lot of hoops you have to go through that forces you to hide the actual python. I was just wondering if there's any intention of writing a python implementation of Qt that isn't necessarily just a wrapper? Either by Nokia or anyone else? I really like Qt but I would love to be able to write more pythonic code. I hope this is OK to ask here. I'm not trying to start a GUI war or anything.

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• big lie about programmer [closed]

  - by gcc

  About computer engineering/ computer science, Can you give me big lie ? ex : - There is no need to attend school ( study computer engineering ). Because every one can code ( write program ) - Programmer cannot do web design , they can only write code - there are no difference between software engineer and coder EDIT: A lie is a type of deception in the form of an untruthful statement, especially with the intention to deceive others. Why someone try to deceive other people especially customer ? I think they try to prove they are real computer engineer without having diploma in computer science. If you look in that manner to my answer you can easily understand what I want

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• What steps should be taken to make sure your software is usable by disabled people?

  - by Cromulent

  I want to make sure a piece of software I am writing is usable by people with various disabilities such as blindness and an inability to use a mouse and / or keyboard. Unfortunately I have no experience with things such as screen readers or other methods that disabled people use to make using a computer easier / possible. I've never really had much experience with disabilities at all and unfortunately I don't know any disabled people who I can ask. I was wondering what other people do to make sure that their software is available to a wide range of people with varying abilities? This seems to be a subject matter that is often ignored by developers and I think it is a real shame.

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• Avoid penalties for duplicate (multilanguage) shared hosting

  - by Dave

  My concern is about SEO. Now let me explain the scenario. I am making a 3 languages website. The development is alright, but I was targeting local customers with one domain, and international (english version) with another. Eg: Local http://www.minhalojadesapatos.com.br (this is not the real website, just example!) Other http://www.myshoesstore.com.br Both domain point to exactly the same hosting and content, but when user comes through local domain, default language is set to portuguese, otherwise, default is english. Language handling on backend uses PHP Sessions and cookies, so with just a click users can change content language. How to avoid being SEO-penalised in this context? (yeah, I was hungry when focusing market for choosing two domains but the activity really needs that, it is a travel agency).

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• Working with vectors and transformations

  - by user29163

  I am going to write an graphical 2D application that allows user to create polygons and transform them through transformation such as rotation an so on. I was hoping someone can give pro and cons arguments for the different choices I got in my mind. (Its all in Java btw!) a). Represent vectors by filling matrices with 'real' numbers. This means making a matrix datas tructure that supports multiplication, transposing etc b). Make a own vector class, such that I can make a matrix class that support those vectors.

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• Why Should I Avoid Inline Scripting?

  - by thesunneversets

  A knowledgeable friend recently looked at a website I helped launch, and commented something like "very cool site, shame about the inline scripting in the source code". I'm definitely in a position to remove the inline scripting where it occurs; I'm vaguely aware that it's "a bad thing". My question is: what are the real problems with inline scripting? Is there a significant performance issue, or is it mostly just a matter of good style? Can I justify immediate action on the inline scripting front to my superiors, when there are other things to work on that might have a more obvious impact on the site? If you pulled up to a website, and took a peek at the source code, what factors would lead you to say "hmm, professional work here", and what would cause you to recoil from an obviously amateurish job? Okay, that question turned into multiple questions in the writing. But basically, inline scripting - what's the deal?

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• Selective bandwidth shaping

  - by the_candyman

  I was searching something for bandwidth shaping. I found trickled and wondershaper which works on the total bandwidth. I would like to know if there exists a selective bandwidth shaping. I mean, I run 2 application which uses internet. I would like to limit the bandwidth of one of these 2 in real time (just like a sound equalizer). For example, I'm downloading something. Meanwhile, someone calls me on skype. So I want to slow the downloading to have more band in my video calling. Is this possible?

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