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• Continue with Java for pc or go to android? [on hold]

  - by Chris London

  so I have been learning java from Deitel's learn java 9th edition. I am up to GUI's and a have a pretty good grasp on OOP etc. I want to go straight to the mobile app development scene, I believe I will learn a fair bit there on using API's, and other tools to develop apps. I am not sure weather I should carry on with PC coding (GUI's etc etc) or…

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• What's the reason exceptions are heavily used in managed (C# and Java) languages but not in C++? [on hold]

  - by ZijingWu

  AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using one compiler. Compared to…

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• what's the overhead when allocating objects/arrays in Java?

  - by Gnijuohz

  How many bytes an array occupies in Java? Assume It's a 64bit machine and also assume there are N elements in an array, so all these elements would take up 2*N, 4*N or 8*N bytes for different types of array. And a lecture in Coursera says that it would occupy 2*N+24, 4*N+24 or 8*N+24 bytes for a N element array and the 24 byte is called…

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• How to write this kind of java source in clojure. [closed]

  - by tikky

  I want to know how to write a clojure code by looking at a java code like this. import xxxxxx import com.vaadin.terminal.gwt.server.AbstractApplicationServlet; public class Clojure4Vaadin extends AbstractApplicationServlet { @Override protected Class <? extends Application > getApplicationClass() throws…

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• Confused about my future. Doubt about .Net or Java way.

  - by dotNET

  I'm very confused about choosing the programming langage to follow in the next step of my life. I'm right now so familiar with C++, VB.NET and PHP, but to jump to a higher level I must choose between JEE(JSP, Servlets, JSF, Spring, EJB, Struts, Hibernate,...) and .NET(ASP.NET, C#). Because I cant learn them at the same…

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• How to integrate Java ME SDK 3.2 with Eclipse

  - by SungmoonCho

  Here is also an instruction on how you can integrate Java ME SDK 3.2 with Eclipse. You need additional steps for Eclipse Juno, because it does automatically detect and download MTJ (Mobile Tools for Java) plugin. The following instruction is for Eclipse Indigo. 1. Download Java ME SDK and Eclipse plugins from here. 2. Install…

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• Technical Article: Experimenting with Java Timers

  - by Tori Wieldt

  OTN's new tech article is "Experimenting with Java Timers" by T. Lamine Ba. This article studies time—how Java handles timers and the scheduling of tasks. Java timers are utilities that let you execute threads or tasks at a predetermined future time, and these tasks can be repeated according to a set frequency. The article…

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• How do you usually manage callbacks in Java using Swing library?

  - by none

  I'm quite new to the Java Swing programming, and GUI development as well. As a beginner, I'm currently reading Design Pattern, but finding what I'm looking for is quite hard, most of the times. So far, I've never had huge problems defining a view hierarchy - I just use to subclass component from component. But the hard-to-do here…

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• where can i learn to make 3d games in java from scratch?

  - by dfhgdfnhgfn

  Just wondering if anyone knows of anything i can read or watch that explains 3D graphics. i do not want to use any game engine like jogl etc. but i am looking for a way i can learn in detail how 3D works. preferably in java. I have used some game engines but would prefer to learn to make for myself. I would also like to do it…

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• How do I find a unit vector of another in Java?

  - by Shijima

  I'm writing a Java formula based on this tutorial: 2-D elastic collisions without Trigonometry. I am in the section "Elastic Collisions in 2 Dimensions". Part of step 1 says: Next, find the unit vector of n, which we will call un. This is done by dividing by the magnitude of n. My below code represents the normal vector…

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• Why shouldn't I be using public variables in my Java class?

  - by Omega

  In school, I've been told many times to stop using public for my variables. I haven't asked why yet. This question: Are Java's public fields just a tragic historical design flaw at this point? seems kinda related to this. However, they don't seem to discuss why is it "wrong", but instead focus on how can they use them…

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• Java and Eclipse setup properly, how do I install JOGL or LWJGL?

  - by shadowprotocol

  I have my Java environment installed alongside Eclipse, and I was successfully able to create and run a new project (simple System.out.println("Yay I work!"); I have the OpenGL SuperBible, and I primarily want to code 3D things (I'll take my time using the book to learn how to draw shapes in 3D space, etc..) Can you…

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• JUnit, Jenkins et Git seraient les outils préférés des développeurs Java, Java 8 adopté par 7% de développeurs

  JUnit, Jenkins et Git seraient les outils préférés des développeurs Java Java 8 adopté par 7% de développeurs, tandis que 26% utilisent encore Java 6L'écosystème Java dispose d'un nombre important d'outils et de piles logiciels qui sont utilisés au quotidien par les développeurs dans leurs applications.ZeroTurnaround,…

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• What's the reason in your mind Exception are heavily used in Managed (C# and Java) language but not in C++?

  - by ZijingWu

  AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, Exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using…

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• Why do int when add up in java keeps on adding? [closed]

  - by Trycon

  I'm developing a game. I'm really new in java and researched google: why does an int when added, keeps on adding java Most of the times, it always adds even: STOP_DAMAGE+=1; Even sometimes, it subtract till negative. I'm annoyed. Sometimes it doesn't add too much. I do not understand. Here is my code: …

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• Is there any way around the field-of-use restrictions in Java?

  - by Muton

  Current field-of-use restrictions defined in "Oracle Binary Code License Agreement for the Java SE Platform Products" prohibit its use in embedded systems. "General Purpose Desktop Computers and Servers" means computers, including desktop and laptop computers, or servers, used for general computing…

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• Java Magazine????5???

  - by sasa

  Java Magazine????5?????????????Java Magazine???????????????????????????????????? ?5????????????????Java Embedded????????? ????·???????? ????????? ??????? NetBeans?????Wicket 1.4??Web?????????? OPENJDK:?????? Java SE 7: ???????????????????????? JDK 7????Java…

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• Java ??????????????

  - by katsumii

  ???????????java?????????????????????????????????? Linux,UNIX??? LANG ? LC_ALL ????????????????????????? Windows ????????????????????????????????????????????????????????????java -Duser.language=en ... ??????????????·??????????????????????????????java.exe????????????jvm.dll…

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• ???????/???Java EE 6 ??

  - by Yusuke.Yamamoto

  ????? ??:2011/04/01 ??:??????/?? Java EE 6 ?2009?12??????????????1???????????1???Java EE 6 ?????????????????????????????????????? Java EE ????????????????????????????????????Java EE 6 ? JBoss Seam, Hibernate, Web Beans(CDI)…

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• ???????????Java SE 7??????! ?Java SE 7 ?????? ?????? ???!

  - by rika.tokumichi

  2006?Java SE6???????5????????????????????Java SE 7???????????????????????????????????????????2011?7?7???Java SE 7 ?????? ?????????????? ???????????????????????Java SE…

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• ???????????Java SE 7??????! ?Java SE 7 ?????? ?????? ???!

  - by rika.tokumichi

  2006?Java SE6???????5????????????????????Java SE 7???????????????????????????????????????????2011?7?7???Java SE 7 ?????? ?????????????? ???????????????????????Java SE…

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• Overwrite archetypes in Maven

  - by Random

  Hello again! I'm having some trouble using Maven for my archetypes and I will need to overwrite some. I launch an instruction that does an archetype:generate in an…

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• Provider<HttpSession> not getting injected

  - by user1033715

  I am using gwt dispatch to communicate and get data from server to client. In order to get user specific data I want to store the user object in httpsession and…

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• Classcastexception occurs randomly

  - by kjhari02

  Hi, I've an application in the market and many users have reported that the app is crashing a lot randomly. I'm trying to fix this but cannot fully understand…

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• problem in start up my RMI server(under ISP) so that it can recieve remote calls over Internet.--Jav

  - by Lokesh Kumar

  i m creating a Client/Server application in which my server and client can be on the same or on different machines but both are under ISP. My RMI programs:- …

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