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New Trusted Status awarded to first Mobile Java Developer

- by Jacob Lehrbaum

Java Verified has just announced that GameLoft is the first developer to receive its new Trusted Status! Java Verified is an industry-recognized Java testing and signing program backed and funded by companies such as AT&T, LG, Motorola, Nokia, Oracle, Orange, Samsung and Vodafone, and chartered with making it easier for mobile developers to certify and deploy applications for use across the billions of mobile handsets that run the Java ME. Because of its breadth and diversity, Java ME provides an unmatched opportunity to reach more than 3 billions consumers, but at the same time, developers are faced with the challenge of working with multiple distribution channels and a range of handsets. To this end, the Java Verified program provides a suite of tests that help to validate identity, functionality, integrity, and quality. Since its rebirth in 2010 as an independent organization, the Java Verified program has been actively working to make it even easier to create and distribute Java ME apps. Example initiatives include updates to the Unified Testing Criteria to make it easier to test "Simple Apps," community outreach to better understand and address developer pain-points and a new "Trusted Status." In the words of the Java Verified Program, Trusted Status is:a privileged status to be granted to developers who will have proven that the quality of their Java ME apps is of a consistently high standard. These are developers who will have earned the trust of Java Verified by demonstrating unfailingly that testing to the UTC standard is a crucial part of their product development activityThe first developer to be awarded this status is GameLoft. By achieving Trusted Status Gameloft can now test their applications to the Java Verified standard without needing to provide Java Verified with the evidence. The apps then automatically get signed with the Java Verified signature enabling GameLoft to benefit from reduced costs and time-to-market for their new Java ME applications from here on out. Learn more about the exciting news or apply now for Trusted Status!

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Thoughts on the new JavaFX by Jim Connors

- by Jacob Lehrbaum

First, a brief editorial if I may. The upcoming JavaFX 2.0 platform has been getting overwhelmingly positive reaction from the community so far. While the public sentiment seems to be cautiously optimistic, I've heard nothing but positive reactions from everyone that I've spoken to about the platform. In fact, many of the early adopters of JavaFX have told us directly that they are very encouraged about the direction the platform is taking.One such early adopter is Oracle's own Jim Connors. As his day job, Jim is a principal sales consultant (basically an engineer that supports Oracle's sales efforts) in the New York area. However, Jim also co-wrote a book with Jim Clarke and Eric Bruno on JavaFX and has spoken and conducted training sessions at events like the New York Java Developer Day, the Java Road Trip, and other events.In his thoughtful editorial, Jim discusses some of the reasons why he believes the new directions Oracle is taking JavaFX make sense, including:Better developer toolsLower barriers to adoption -> better accessibility to existing Java developersImproved performanceMore flexibility (ability to use other dynamic languages, etc)To read more about Jim's thoughts on the new JavaFX, check out his blog. Or if you want to learn more about the JavaFX platform, pick up a copy of his book. And if you still want to use JavaFX Script, you can check out Project Visage

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Rendering CV template with XeLaTex

- by jacob

Installed kubuntu on thursday Installed LaTeX on my kubuntu machine, using full Compiled an old document and it worked fine Downloaded a CV template from http://www.latextemplates.com/template/two-column-one-page-cv Compiled it, got error Fatal fontspec error: "cannot-use-pdftex" The fontspec package requires either XeTeX or LuaTeX to function. You must change your typesetting engine to, e.g., "xelatex" or "lualatex" instead of plain "latex" or "pdflatex". See the fontspec documentation for further information. For immediate help type H . Installed XeLaTex using this guide http://ledgersmb.org/faq/xelatex i.e. 7 Installed texlive-xetex that includes xelatex apt-get install texlive-xetex apt-get install liblatex-{driver,encode,table}-perl apt-get install libtemplate-plugin-latex-per 8) Compiled CV template again, did not work. Related: No Xelatex in texlive 2012 Excuse me if my question is not clear enough, I'm new to linux.

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What real life bad habits has programming given you?

- by Jacob T. Nielsen

Programming has given me a lot of bad habits and it continues to give me more everyday. But I have also gotten some bad habits from the mindset that I have put myself in. There simply are some things that are deeply rooted in my nature, though some of them I wish I could get rid of. A few: Looking for polymorphism, inheritance and patterns in all of God's creations. Explaining the size of something in pixels and colors in hex code. Using code related abstract terms in everyday conversations. How have you been damaged?

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Boston: Free Java Developer Event March 3rd!

- by Jacob Lehrbaum

Attention Boston area developers! Oracle has been running a series of free one-day Java Developer events in the US, Europe, and Asia since last November, and on March 3rd, this highly popular series is coming to the Westin Copley Place in Boston. The Java Developer Day will include four tracks of sessions and hands-on-labs designed for developers interested in Server, Desktop, Embedded, and core Java SE platform topics. Technologies covered include Java EE, Java ME and Java SE (including the JDK). From the event page: Come to this free event if you are interested in:Evaluating the Java platformUsing other languages on the JVMBuilding server side JavaConstructing Rich Web or Desktop ApplicationsUnderstanding the JVM and its built in diagnosticsMaking Smart Devices even smarterCheck out the event page to read more and/or register. The event is free, but space is limited so register today!

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First JSRs Proposed for Java EE 7

- by Jacob Lehrbaum

With the approval of Java SE 7 and Java SE 8 JSRs last month, attention is now shifting towards the Java EE platform. While functionality pegged for Java EE 7 was previewed at least as early as Devoxx, the filing of these JSRs marks the first, officially proposed, specifications for the next generation of the popular application server standard. Let's take a quick look at the proposed new functionality.Java Persistence API 2.1The first of the new proposed specifications is JSR 338: Java Persistence API (JPA) 2.1. JPA is designed for use with both Java EE and Java SE and: "deals with the way relational data is mapped to Java objects ("persistent entities"), the way that these objects are stored in a relational database so that they can be accessed at a later time, and the continued existence of an entity's state even after the application that uses it ends. In addition to simplifying the entity persistence model, the Java Persistence API standardizes object-relational mapping." (more about JPA)JAX-RS 2.0The second of the new Java specifications that have been proposed is JSR 339, otherwise known as JAX-RS 2.0. JAX-RS provides an API that enables the easy creation of web services using the Representational State Transfer (REST) architecture. Key features proposed in the new JSR include a Client API, improved support for URIs, a Model-View-Controller architecture and much more!More informationOfficial proposal for Java Persistence 2.1 (jcp.org)Official proposal for JAX-RS 2.0 (jcp.org)Kicking off Java EE 7 with 2 JSRs: JAX-RS 2.0 / JPA 2.1 (the Aquarium)

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Interested in developing JavaFX content for TV?

- by [email protected]

If you answered YES to this question, you might be interested in checking out this excellent article written by the JavaFX team entitled, "Tips for Developing to the JavaFX TV Platform." And with the new JavaFX TV emulator included in JavaFX 1.3, you'll be able to build and prototype TV applications directly on your Windows-based desktop.

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Out of Memory when building an application

- by Jacob Neal

I have quite a major problem with my Multimedia Fusion 2 game. I finished it months ago, however, the only thing keeping me from finally compiling the game into an executable file is this error message that pops up every time I try to, simply saying, "Out of Memory". Its highly frustrating to be halted at this point by this message, and I tried everything I could come up with to fix it including compressing the runtime and sounds and increasing the proity of MMF2 all the way to realtime in the task manager. Im begging someone to toss me a bone on this problem, and any advice at all would be much appreciated.

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How to manage primary key while updating [migrated]

- by Subin Jacob

In the following table primaryKeyColumn is primary key. To maintain the data history I always uses the values with WHERE condition(WHERE StatusColumn=1) And will set the StatusColumn to 0 if the data is edited (So that I could keep the previous data). But the problem is, if I update it to 0 , I can't insert the same key to primarykeycolumn since the column validated for primary keys. How can I manage these kind of validations? what the mistake I did in this design? primaryKeyColumn ValueColumn StatusColumn ---------------- ----------- ------------ 2 Name1 1 3 Name2 1 4 Name3 0

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Mobile Developer Economics: Calling all Developers!

- by Jacob Lehrbaum

VisionMobile is currently soliciting feedback for the second edition of their popular Mobile Developer Economics report. With the 2011 edition, VisionMobile is hoping to: "see how the dynamics of the developer world have changed since early 2010 and to provide more insights into app marketing, monetization and many other factors."If you have a couple of minutes, please check out the survey and provide your input. In addition please help us spread the word to make sure that Java developers are well represented in this survey. Thanks!

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Receiving requests where absolute URL on page are morphed to relative URLs

- by Jacob

In our web pages, we have a hyperlink with an href to an absolute URL: https://some.other.host.com/blah.aspx?var1=val1&var2=val2 For some reason, in our logs, we see a lot of requests to URLs of this format: http://our.site.com/https:/some.other.host.com/blah.aspx?var1=val1&var2=val2 We don't have any JavaScript that would request that URL; it only appears inside of a hyperlink. Is there some sort of known bot, browser plugin, bug, etc. that could be responsible for these requests being made?

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Boots up into Terminal

- by Jacob Larson

I am running a 64 bit version of Ubuntu 12.04.1, and I when I boot up, I am thrown (Rather violently. :P) a full-sized terminal, instead of my lovely GUI login screen.. So I looked around and tried the "startx" command, which works like a charm. Only problem is that now, I have no clue how to keep it from booting to the terminal every time, and boot up into the regular GUI with all my stuff. I did install some kernel updates the night before, though I restarted my computer twice after I had done so without a problem. Thanks for your time!

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Business Logic Layer in MVC Application

- by Subin Jacob

In my ASP MVC application I decided to add another Business Layer and made the model only to have properties. All other functionality like save to db, get from db is done on this new Business layer. So now the controller will be calling this business layer and model for various operations. Is it a good approach to design like this? I decided not to use model for this purpose because I would need a number of models for different actions. (for eg, one for edit and other for create)

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Credentials Not Passed From SharePoint WebPart to WCF Service

- by Jacob L. Adams

I have spent several hours trying to resolve this problem, so I wanted to share my findings in case someone else might have the same problem. I had a web part which was calling out to a WCF service on another server to get some data. The code I had was essentially using System.ServiceModel; using System.ServiceModel.Channels; ... var binding = new CustomBinding( new HttpTransportBindingElement { AuthenticationScheme = System.Net.AuthenticationSchemes.Negotiate } ); var endpoint = new EndpointAddress(new Uri("http://someotherserver/someotherservice.svc")); var someOtherService = new SomeOtherServiceClient(binding, endpoint); string result = someOtherService.SomeServiceMethod(); This code would run fine on my local instance of SharePoint 2010 (Windows 7 64-bit). However, when I would deploy it to the testing environment, I would get a yellow screen of death with the following message: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate,NTLM'. I then went through the usual checklist of Windows Authentication problems: Check WCF bindings to make sure authentication is set correctly Check IIS to make sure Windows Authentication is enabled and anonymous authentication was disabled. Check to make sure the SharePoint server trusted the server hosting the WCF service Verify that the account that the IIS application pool is running under has access to the other server I then spend lot of time digging into really obscure IIS, machine.config, and trust settings (as well of lots of time on Google and StackOverflow). Eventually I stumbled upon a blog post by Todd Bleeker describing how to run code under the application pool identity. Wait, what? The code is not already running under application pool identity? Another quick Google search led me to an MSDN page that imply that SharePoint indeed does not run under the app pool credentials by default. Instead SPSecurity.RunWithElevatedPrivileges is needed to run code under the app pool identity. Therefore, changing my code to the following worked seamlessly using System.ServiceModel; using System.ServiceModel.Channels; using Microsoft.SharePoint; ... var binding = new CustomBinding( new HttpTransportBindingElement { AuthenticationScheme = System.Net.AuthenticationSchemes.Negotiate } ); var endpoint = new EndpointAddress(new Uri("http://someotherserver/someotherservice.svc")); var someOtherService = new SomeOtherServiceClient(binding, endpoint); string result; SPSecurity.RunWithElevatedPrivileges(()=> { result = someOtherService.SomeServiceMethod(); });

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Free Java Workshops at Mobile World Congress

- by Jacob Lehrbaum

Are you attending Mobile World Congress in Barcelona next week? If so, you might want to register for Oracle's free workshop series taking place in the App Planet. We will be hosting a series of 25 workshops in our booth covering a range of topics that include: Benefits of Deploying Phones with Oracle Java Wireless Client Oracle's Embedded Java solutions for Machine-to-Machine applications Building better User Interfaces with the Lightweight User Interface Toolkit Resources to help you leverage Operator Network APIs in your Applications The Java Verified Program: new trusted status and other recent initiatives Building better mobile enterprise applications with Oracle's ADF Mobile technology How to build a profitable mobile applications business with Java ME Guest speakers from Orange, Telefonica and from leading ISVs REGISTER NOW for one or more workshops in the Oracle Java Booth 7C18 located in the App Planet. Oh, and did we mention there might be giveaways? Note: you may need to "sign out" if you have an account on Oracle.com in order to see the registration page

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Moving camera, or camera with discrete "screens"?

- by Jacob Millward

I'm making a game with a friend, but having trouble deciding on a camera style. The basic idea for the game, is having a randomly generated 2-dimensional world, with settlements in it. These settlements would have access to different resources, and it would be the job of the player to create bridges and ladders and links between these villages so they can trade. The player would advance personally by getting better gear, fighting monsters and looking for materials in the world, in order to craft and trade them at the settlements. My friend wants to use an old-style camera, where the world is split into a discrete number of screens that the player moves between. Similar to early Zelda dungeons, or Knytt Stories. This is opposite to me, as I want a standard camera that follows the player around as I feel the split-screen style camera limits the game. Can anyone argue the case either way? We've hit a massive roadblock here and can't seem to get past it.

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Is syncing private keys a good idea?

- by Jacob Johan Edwards

Ubuntu One's Security FAQ indicates that Canonical encrypts connections and restricts access to user data. This all well and fine, and I do trust SSL for online banking and other things more valuable than my private keys. That said, I am quite anxious about putting my ~/.ssh/id_dsa up in the cloud. Obviously, no system is totally secure. Could some knowledgeable party, then, pragmatically quantify the risks?

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Wrapping up an Exciting Mobile World Congress

- by Jacob Lehrbaum

Its been a busy week here in Barcelona, with noticeably more energy at the show than in 2010. This year, we decided to move the Java booth to the App Planet and really engage with the increasing number of developers that are attending the event. Our booth featured 10 demos and a series of nearly 25 workshops featuring a variety of topics ranging from information about Java Verified, to the use of web technologies with Java ME, to sessions hosted by Operators such as Orange and Telefonica (see image to the left).One of the more popular topics in our booth was the use of Java in the Smart Grid. In our booth we were showing off some of the work of the Hydra Consortium whose goal it is to leverage the emerging smart grid infrastructure to securely enable the delivery of personal health data (weight, blood pressure, etc) from the home to your doctor. If you'd like to learn more about this innovative project, you can watch a video that was filmed at the event featuring Charles Palmer of Onzo. If you'd like to learn more about Java in the Smart Grid, check out our on-demand webinar

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Starting an HTML canvas game with no graphics skills

- by Jacob

I want to do some hobby game development, but I have some unfortunate handicaps that have me stuck in indecision; I have no artistic talent, and I also have no experience with 3D graphics. But this is just a hobby project that might not go anywhere, so I want to develop the stuff I care about; if the game shows good potential, my graphic "stubs" can be replaced with something more sophisticated. I do, however, want my graphics engine to render something approximate to the end goal. The game is tile-based, with each tile being a square. Each tile also has an elevation. My target platform (subject to modification) is JavaScript rendering to the HTML 5 canvas, either with a 2D or WebGL context. My question to those of you with game development experience is whether it's easier to develop an isometric game using a 2D graphics engine and sprites or a 3D game using rudimentary 3D primitives and basic textures? I realize that there are limitations to isometric projection, but if it makes developing my throwaway graphics engine easier, I'm OK with the visual warts that would be introduced. Or is representing a 3D world with an actual 3D engine easier?

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'6' key stuck when outside the graphical interface

- by Felipe Jacob

A strange thing has been happening since I installed Ubuntu. Whenever I'm not on the graphical interface, that is, if I do ctrl+alt+f2, or while the system is shutting down, or when I try to reset my password accessing root on security mode, the '6' key seems to be stuck. This doesn't affect my day-to-day usage at all, but whenever I change from the graphical console, I can't do anything because it keeps pressing '666666...'. Does anyone know why that might be happening? My keyboard is a Logitech G710+, and hasn't shown any other possible compatibility issues.

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LGPL License in commercial application

- by Jacob

I have searched around but I don't seem to be able to get a clear answer on my questions that I understand. I want to use the Xuggler library in my application, which is licensed either GPL or LGPL depending on whether I compile it myself. I don't intend to edit the library If I compile it myself and thus get a LGPL version of the library, can I use it in a commercial application without having to distribute the source code of my application? Furthermore, do I have to give my application the LGPL license as well? What other problems might using this library give me?

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Foreach loop with 2d array of objects

- by Jacob Millward

I'm using a 2D array of objects to store data about tiles, or "blocks" in my gameworld. I initialise the array, fill it with data and then attempt to invoke the draw method of each object. foreach (Block block in blockList) { block.Draw(spriteBatch); } I end up with an exception being thrown "Object reference is not set to an instance of an object". What have I done wrong? EDIT: This is the code used to define the array Block[,] blockList; Then blockList = new Block[screenRectangle.Width, screenRectangle.Height]; // Fill with dummy data for (int x = 0; x <= screenRectangle.Width / texture.Width; x++) { for (int y = 0; y <= screenRectangle.Height / texture.Width; y++) { if (y >= screenRectangle.Height / (texture.Width*2)) { blockList[x, y] = new Block(1, new Rectangle(x * 16, y * 16, texture.Width, texture.Height), texture); } else { blockList[x, y] = new Block(0, new Rectangle(x * 16, y * 16, texture.Width, texture.Height), texture); } } }

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GLSL billboard move center of rotation

- by Jacob Kofoed

I have successfully set up a billboard shader that works, it can take in a quad and rotate it so it always points toward the screen. I am using this vertex-shader: void main(){ vec4 tmpPos = (MVP * bufferMatrix * vec4(0.0, 0.0, 0.0, 1.0)) + (MV * vec4( vertexPosition.x * 1.0 * bufferMatrix[0][0], vertexPosition.y * 1.0 * bufferMatrix[1][1], vertexPosition.z * 1.0 * bufferMatrix[2][2], 0.0) ); UV = UVOffset + vertexUV * UVScale; gl_Position = tmpPos; BufferMatrix is the model-matrix, it is an attribute to support Instance-drawing. The problem is best explained through pictures: This is the start position of the camera: And this is the position, looking in from 45 degree to the right: Obviously, as each character is it's own quad, the shader rotates each one around their own center towards the camera. What I in fact want is for them to rotate around a shared center, how would I do this? What I have been trying to do this far is: mat4 translation = mat4(1.0); translation = glm::translate(translation, vec3(pos)*1.f * 2.f); translation = glm::scale(translation, vec3(scale, 1.f)); translation = glm::translate(translation, vec3(anchorPoint - pos) / vec3(scale, 1.f)); Where the translation is the bufferMatrix sent to the shader. What I am trying to do is offset the center, but this might not be possible with a single matrix..? I am interested in a solution that doesn't require CPU calculations each frame, but rather set it up once and then let the shader do the billboard rotation. I realize there's many different solutions, like merging all the quads together, but I would first like to know if the approach with offsetting the center is possible. If it all seems a bit confusing, it's because I'm a little confused myself.

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Hijax == sneaky Javascript redirects? Will I get banned from Google?

- by Chris Jacob

Question Will I get penalised as "sneaky Javascript redirects" by Google if I have the following Hijax setup (which requires a JavaScript redirect on the page indexed by google). Goal I want to implement Hijax to enable AJAX content to be accessibile to non-JavaScript users and search engine crawlers. Background I'm working on a static file server (GitHub Pages). No server side tricks allowed (so Google's #! "hash bang" solution is not an option). I'm trying to keep my files DRY. I don't want to repeat the common OUTER template in all my files i.e. header, navigation menu, footer, etc They will live in the main index.html Setup the Hijax index.html page contains all OUTER html/css/js... the site's template. index.html has a <div id="content"> which defaults to containing the "homepage" html. index.html has a navigation menu, with a Hijax link to an "about" page. With JavaScript disabled (e.g. crawler) it follows link to /about.html. With JavaScript enabled (e.g. most people) the link updates the url hash fragment to /#about and jQuery replaces the <div id="content"> innerHTML with $("#content").load("about.html #inner-container");. AJAX content about.html does not contain anything extra to try an cloak content for crawlers. about.html file contains enough HTML / CSS / JavaScript to display /about.html as a standalone page with it's own META data... e.g. <html><head><title>About</title>...</head><body></body></html>. about.html has NO OUTER HTML template (i.e. header, navigation menu, footer, etc). about.html <body> contains a <div id="inner-container"> which holds the content that is injected into index.html. about.html has a <noscript> tag as the first child of <body> which explains to non-JavaScript users that they are viewing the about page "inner content" - with a link to navigate to the index.html page to get the full page layout with menu. The (Sneaky?) Redirect Google indexes the /about.html page. However when a person with JavaScript enabled visits that page there is no OUTER html template (e.g. header, navigation menu, footer, etc). So I need to do a JavaScript redirect to get the person over the /#about page (deeplinking to the "about" page "state" in index.html). I'm thinking of doing a "redirect on click or after 10 seconds". The end results is that user ends up on an "enhanced" page back on index.html with all it's OUTER template - but the core "page" content is practically identical. Known issue with inbound links e.g. Share / Bookmarking It seems that if a user shares the URL /#about on their blog, when allocating inbound links to my site Google ignores everything after the # ... it allocates value to the / page - See: http://stackoverflow.com/questions/5028405/hashbang-vs-hijax/5166665#5166665. I can only try an minimise this issue offering "share" buttons on the page with the appropriate urls i.e. /about.html. Duplicate Sorry. I posted this same question over on http://stackoverflow.com/questions/5561686/hijax-sneaky-javascript-redirects-will-i-get-banned-from-google ... then realised it probably belongs more on this Stack Exchange site... Not sure if I should delete the Stack Overflow question? Or just leave it on both sites? Please leave comment.

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On-demand Webcast: Java in the Smart Grid

- by Jacob Lehrbaum

The Smart Grid is one of the most significant evolutions of our utility infrastructure in recent history. This innovative grid will soon revolutionize how utilities manage and control the energy in our homes--helping utilities reduce energy usage during peak hours, improve overall energy efficiency, and lower your energy bills. If you'd like to learn more about the Smart Grid and the role that Java is poised to play in this important initiative you can check out our on-demand webcast. We'll show you how Java solutions--including Java ME and Java SE for Embedded --can help build devices and infrastructure that take advantage of this new market. As the world's most popular developer language, Java enables you to work with a wide range of developers and provides access to tools and resources to build smarter devices, faster and more affordably.

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