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  • Will Java be dead if the split into free/premium JVM happens?

    - by cringe
    According to http://www.theregister.co.uk/2010/11/06/oracle_dueling_jvms/ there is a possibility that Oracle really will kill Java split Java into Free and Premium JVMs. My Questions Do you think this will happen? Will this kill Java at the end? If you answer both questions with Yes, what are you doing about it? Which language would you choose, and which platform will you use? .NET/Mono? Plain compiled languages like Golang? Ruby? And if you answer No, why do you think Oracle will not harm Java and the community?

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  • Is Java a good choice for cross-platform games?

    - by CommunistPancake
    I'm looking to create a game in Java and would like it to work on Windows, Linux, and Mac. I'm pretty sure C# is a bad choice for this, and I don't have enough experience in C or C++. I want to stay away from Flash. Therefore, Is Java a good choice for me? Mostly, I use C#, and think that Java is similar, so I assume it won't be that hard to learn. But is it fast enough? Is there a language more suited for my needs than Java?

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  • Are there good replacements for client-side java in web programming? [closed]

    - by varesa
    Now since the latest java exploit, and many others in the past, people are again recommended to get rid of java on their computers for good. I, as a java web applications developer, am think about possible alternatives. Many seem to have gotten rid of java, so I would not like to develop for an environmet, that users do not have on their computers, and that they are not willing to install for security reasons. Are there any other real options that HTML5 + JS? (Don't take me wrong about not wanting HTML5+JS, I just want to know the options)

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  • What Java class should I use to represent a Vector?

    - by user8363
    Does Java have a built-in Vector class suitable for handling collision detection / response? It should have methods like subtract(Vector v), normalize(), dotProduct(Vector v), ... It seems logical to use java.awt.Rectangle and java.awt.Polygon to calculate collisions. Would I be right to use these classes for this purpose? I understand collision detection; I'm only wondering what approach to it is idiomatic in Java. I'm new to the language and to application development in general.

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  • Access is refusing to run an query with linked table?

    - by Mahmoud
    Hey all i have 3 tables each as follow cash_credit Bank_Name-------in_date-------Com_Id---Amount America Bank 15/05/2010 1 200 HSBC 17/05/2010 3 500 Cheque_credit Bank_Name-----Cheque_Number-----in_date-------Com_Id---Amount America Bank 74835435-5435 15/05/2010 2 600 HSBC 41415454-2851 17/05/2010 5 100 Companies com_id----Com_Name 1 Ebay 2 Google 3 Facebook 4 Amazon Companies table is a linked table when i tried to create an query as follow SELECT cash_credit.Amount, Companies.Com_Name, cheque_credit.Amount FROM cheque_credit INNER JOIN (cash_credit INNER JOIN Companies ON cash_credit.com_id = Companies.com_id) ON cheque_credit.com_id = Companies.com_id; I get an error saying that my inner Join is incorrectly, this query was created using Access 2007 query design the error is Type mismatch in expression then i thought it might be the inner join so i tried Left Join and i get an error that this method is not used JOIN expression is not supported I am confused on where is the problem that is causing all this

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  • Where can I find crash course in Java eclipse in Vancouver?

    - by user3604
    I am not satisfied with what I learned in Java 101 in University. I feel like, lot of time is spent on trying to figure out how to write something in Java properly. I feel like, my lack of knowledge of Java and eclipse is slowing me down. I would like to pay for a detailed and intensive course in Java & Eclipse. I can read a book and read tutorials, but it seems harder to discipline myself. Where can I find such crash courses outside of university courses? I find lot of CS courses just show tip of the iceberg and not too much focused on actual application. I want to learn the latest industry skills and etc. I live in BC, Canada. I am thinking of BCIT, but not sure what they offer.

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  • Printing labels from an android app or Java? [on hold]

    - by user3563124
    I've seen others discussing printing labels with a dedicated label printer using Java. Is there any way to print labels using a regular printer with label paper using (optimally) Android libraries/API? If not, is there any way to do this in a non-mobile context using Java? Searching for "Java Label Printing" is only turning up the aforementioned dedicated label printing bits, which aren't quite what I'm looking for.

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  • What are the essential qualities to be a Java programmer? [closed]

    - by Rand Mate
    I just learnt a crash course from an institute for Core and Advanced Core Concepts in Java. I asked them what are all the algorithms, I need to know? They said: In Java there are more methods, you don't need to code more as in C/C++. After finishing core concepts in Java, I just passed on with more method usages from pre-defined classes in packages. So what's the next part I have to do, if the above mentioned is perfectly true (or) false based on the current expectations of IT Java programmers market? FYI: I'm fundamentally from the Electronics background, so please do excuse my ignorance.

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  • Should I use XNA (C#) or Java to create a basic game engine?

    - by Xboxking
    My project is to design and build a game engine (in just about 3 months). I've been looking at two options for this game engine, either make it with XNA (and C#) or Java. My experience with XNA/C# is zero to none, however I have been a Java programmer for around 4 years. I've had a little play around with both but I am still not sure what would be best to use (i.e. what would turn out better with my experience). XNA is obviously for making games and I would presume making a game engine would be slightly easier in this - however that said, there are numerous libraries available in Java that could be used for a game engine (such as lwjgl). What would be my best option and ideally produce the best results out of both XNA or Java? For your information, the game engine at the moment is a 2D one and is not too advanced (although I plan to extend it in the future). Thanks in advance for all answers!

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  • calling hibernate callback

    - by vrkmurali
    HibernateCallback callback=new HibernateCallback() { @Override public Object doInHibernate(Session session) throws HibernateException, SQLException { Transaction transaction=session.beginTransaction(); Query query2 = session.createSQLQuery( "select user_id,user_name from usermasterdao where user_id not in('select usermaster_id from LoginHistoryDAO where logindate between :fromdate and :todate')"); ((SQLQuery) query2).addEntity(UserMasterDAO.class); //query.setParameter("stockCode", "7277"); query2.setParameter("todate", toDate); query2.setParameter("fromdate", fromDate); List result2 = query2.list(); listofNotUsing=result2; System.out.println(result2.size()+"sizeeee"); transaction.commit(); return result2;}} while executing the command getting error like as follows com.vaadin.event.ListenerMethod$MethodException: Invocation of method notUsingButton in com.iton.ioffice.admin.LoginHistory failed. at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:530) at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164) at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219) at com.vaadin.ui.Button.fireClick(Button.java:567) at com.vaadin.ui.Button.changeVariables(Button.java:223) at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.changeVariables(AbstractCommunicationManager.java:1460) at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1404) at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1329) at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:761) at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:318) at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:501) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) Caused by: org.springframework.orm.hibernate3.HibernateQueryException: could not locate named parameter [todate]; nested exception is org.hibernate.QueryPa rameterException: could not locate named parameter [todate] at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:656) at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411) at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:339) at com.iton.ioffice.admin.DAO.impl.UserServiceDAOImpl.outOfProcess(UserServiceDAOImpl.java:304) at com.iton.ioffice.admin.LoginHistory.notUsingButton(LoginHistory.java:298) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:520) ... 23 more Caused by: org.hibernate.QueryParameterException: could not locate named parameter [todate] at org.hibernate.engine.query.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:99) at org.hibernate.engine.query.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:105) at org.hibernate.impl.AbstractQueryImpl.determineType(AbstractQueryImpl.java:437) at org.hibernate.impl.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:407) at com.iton.ioffice.admin.DAO.impl.UserServiceDAOImpl$4.doInHibernate(UserServiceDAOImpl.java:285) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) ... 31 more please help me

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  • Allowing wildcard (%) access on MySQL db, getting error "access denied for '<user>'@'localhost'"

    - by Wayne M
    I've created a database and a user, and allowed access via the following: create user 'someuser'@'%' identified by 'password'; grant all privileges on somedb.* to 'someuser' with grant option; however, when I try to connect to MySQL I get the following error: $ mysql -u someuser -p > Enter Password: > ERROR 1045 (28000): Access denied for user 'someuser'@'localhost' (using password: YES) If "%" is the wildcard, then wouldn't it also enable localhost?

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  • Will Java or C# be a better career choice for the future? [closed]

    - by learner_17
    I am in a tough situation here,and i know this question has been asked a thousand times.I have been asked by an employer to switch to java ,although i am currently working on c# for the last 3-4 months. my dilemna is should i go for it? is java tough?and if i go whats the best way to learn java. And if I dont switch how do i sharpen my c# skills - or should is say my whole grip over the entire .net framework.

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  • Java queue and multi-dimension array

    - by javaLearner.java
    First of all, this is my code (just started learning java): Queue<String> qe = new LinkedList<String>(); qe.add("b"); qe.add("a"); qe.add("c"); qe.add("d"); qe.add("e"); My question: Is it possible to add element to the queue with two values, like: qe.add("a","1"); // where 1 is integer So, that I know element "a" have value 1. If I want to add a number let say "2" to element a, I will have like a = 3. If this cant be done, what else in java classes that can handle this? I tried to use multi-dimention array, but its kinda hard to do the queue, like pop, push etc. (Maybe I am wrong) How to call specific element in the queue? Like, call element a, to check its value. [Note] Please don't give me links that ask me to read java docs. I was reading, and I still dont get it. The reason why I ask here is because, I know I can find the answer faster and easier.

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  • What important aspects of Java should I know coming from Python?

    - by Macuser
    So, I've been browsing the job market, and it seems almost every programmer position requires either knowledge in the .NET, C#, or Java, and I'm looking to pick up Java, as I am not interesting very much with programming for Windows environments. So, what syntax differences should I look out for (except different class names), and any practices that I should avoid using in Java which is normally used in Python?

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  • Java Magazine????7???

    - by sasa
    11?20??Java Magazine????7?????????? ?7???????????????? ?????Java DUKE’S CHOICE AWARDS BlueJ?????????????????????? Web??????????????????????????? Project Lambda??? Java HotSpot VM??????(2):????????????????? NIO.2??????·????API??? Java EE Connector Architecture 1.6 Payment API—JSR 229?? Oracle Berkeley DB Java Edition?Java API(???2) ???????JavaFX????????? Graal??? JavaFX Media API????????? ?????????????????????????????????????????? Java Magazone?????????Java??????????????Java Developer Newsletter???????????????????????????12?31?????????????1,000???Java??????Duke?????????????????????

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  • ?Java SE 7 ?????? ???????????

    - by user13137856
    7?7?(?)14:00~??????????????????Java SE 7 ?????? ???????????????NetBeans ???????????????????7.0 ?????? JDK7 ????????????????????????????????????????? Java SE 7 ?????? ??????  ??:2011?7?7?(?)14:00 ~19:00  ??: ????????13F???????  ??: ????? + ??? Java ??????(?? ??? ?) Java SE 7 + 8 ???(?? ??) HotRockit +Java ? New ????????(? ??) NetBeans 7.0 + Project Coin ???(?? ??) InvokeDynamic ???(?? ??) Fork/Join Framework????Lambda??(?? ?? ?) ???New I/O(?? ?? ?) ?????????????????????????????????????????????

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  • Problems with shutting down JBoss in Eclipse if I change JNDI port

    - by Balint Pato
    1st phase I have a problem shutting down my running JBoss instance under Eclipse since I changed the JNDI port of JBoss. Of course I can shut it down from the console view but not with the stop button (it still searches JNDI port at the default 1099 port). I'm looking forward to any solutions. Thank you! Used environment: JBoss 4.0.2 (using default) Eclipse 3.4.0. (using JBoss Tools 2.1.1.GA) Default ports: 1098, 1099 Changed ports: 11098, 11099 I changed the following part in jbosspath/server/default/conf/jboss-service.xml: <!-- ==================================================================== --> <!-- JNDI --> <!-- ==================================================================== --> <mbean code="org.jboss.naming.NamingService" name="jboss:service=Naming" xmbean-dd="resource:xmdesc/NamingService-xmbean.xml"> <!-- The call by value mode. true if all lookups are unmarshalled using the caller's TCL, false if in VM lookups return the value by reference. --> <attribute name="CallByValue">false</attribute> <!-- The listening port for the bootstrap JNP service. Set this to -1 to run the NamingService without the JNP invoker listening port. --> <attribute name="Port">11099</attribute> <!-- The bootstrap JNP server bind address. This also sets the default RMI service bind address. Empty == all addresses --> <attribute name="BindAddress">${jboss.bind.address}</attribute> <!-- The port of the RMI naming service, 0 == anonymous --> <attribute name="RmiPort">11098</attribute> <!-- The RMI service bind address. Empty == all addresses --> <attribute name="RmiBindAddress">${jboss.bind.address}</attribute> <!-- The thread pool service used to control the bootstrap lookups --> <depends optional-attribute-name="LookupPool" proxy-type="attribute">jboss.system:service=ThreadPool</depends> </mbean> <mbean code="org.jboss.naming.JNDIView" name="jboss:service=JNDIView" xmbean-dd="resource:xmdesc/JNDIView-xmbean.xml"> </mbean> Eclipse setup: About my JBoss Tools preferences: I had a previous version, I got this problem, I read about some bugfix in JbossTools, so updated to 2.1.1.GA. Now the buttons changed, and I've got a new preferences view, but I cannot modify anything...seems to be abnormal as well: Error dialog: The stacktrace: javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]]] at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1385) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572) at javax.naming.InitialContext.lookup(InitialContext.java:347) at org.jboss.Shutdown.main(Shutdown.java:202) Caused by: javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect]] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254) at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370) ... 4 more Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server localhost:1099 [Root exception is java.net.ConnectException: Connection refused: connect] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228) ... 5 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158) at java.net.Socket.connect(Socket.java:452) at java.net.Socket.connect(Socket.java:402) at java.net.Socket.<init>(Socket.java:309) at java.net.Socket.<init>(Socket.java:211) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:69) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:62) at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224) ... 5 more Exception in thread "main" 2nd phase: After creating a new Server in File/new/other/server, it did appear in the preferences tab. Now the stop button is working (the server receives the shutdown messages without any additional modification of the jndi port -- there is no opportunity for it now) but it still throws an error message, though different, it's without exception stack trace: "Server JBoss 4.0 Server failed to stop."

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  • How to blacklist a problem Wi-Fi access point by MAC address in Mac OS X

    - by Sam Alexander
    So I am a small Mac-user cog in a larger Windows-based network machine. The network here works fine for most everyone else (on PCs), but I have random timeouts and issues with the Wi-Fi. Luckily, I have identified a few problem access points by MAC address (via their log messages in Console.app). Is it possible to tell my AirPort on my Macbook to avoid those access points, and only speak with the access points who are far less touchy about me drinking the Apple kool-aid? All of the points are on the same network SSID.

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  • How to blacklist a problem wifi access point by MAC address in OSX

    - by Sam Alexander
    So I am a small mac-user cog in a larger windows-based network machine. The network here works fine for most everyone else (on PCs), but I have random timeouts and issues with the Wifi. Luckily, I have identified a few problem access points by MAC address (via their log messages in Console.app). Is it possible to tell my Airport on my Macbook to avoid those access points, and only speak with the access points who are far less touchy about me drinking the Apple kool-aid? All of the points are on the same network SSID.

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  • Looking for Inneroffice Access Tool, Workstation to Workstation

    - by nicorellius
    This may be a simple question to answer, and I apologize if it's a duplicate. I looked through the suggestions and nothing jumped out at me as the right answer, so here goes: My office has several workstations, Macs and Windows boxes. We do have a firewall and a VPN solution, so getting in to the network from outside is easy. Likewise, we use GoToMeeting for demos and when we help our customers with their issues. But we have one workstation that has certain testing tools on it, and instead of walking across the office to this machine, I'd like to access it from my desk (and monitor it). I will need to open a command line and run commands. I could start a GoToMeeting and do it this way, but that seems overkill and clunky. Is there a simpler tool that allows pseudo-remote access within the same office/network for this kind of access?

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  • How do I connect to a remote desktop connection to access files but not graphically

    - by user26453
    Is there any way to connect to a remote Windows server via RDP but not graphically? What options do I have simply to connect to a remote Windows machine and access my files, but not have to do it via a graphic interface. i.e. is there an equivalent of SSH or SCP (file access is really what I'm looking to do) for Windows? I will add the caveat that I do not manage the machine, so installing any services would probably not be kosher, although I do have administrator access to the machine.

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  • Java for 64bit isn't working

    - by Loper324
    I'm having errors with java left and right, normal java works just fine. It's things that use the internet for certificates and java .jnpl. I've tried Minecraft classic, it gives me a error, canirunit, error, Carnegie learning, error. I've switched browsers and still have these errors. everything is broken I've turned on ask me for unsigned certificates instead of blocking it and it doesn't pop-up. I'd like to know how to reset java, is that possible I've re-installed it and rebooted and nothing works. Here is a Image: Here is the rest of the text: http://pastebin.com/bzByPSbh

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  • Configuring a Genius GW-7200 Access Point

    - by alex
    I came across an access point we had a few years ago. I'm now trying to get it set up to work on our network. here are a couple of pictures: http://twitpic.com/194u06/full http://twitpic.com/194u0v/full I have plugged this into our network via the network port on the back. I set up a DHCP reservation, based on the MAC address on the back of the access point, however I cannot ping it, nor access the web interface. I've held down the reset button for 10 seconds, to see if that would do anything. Google doesn't come up with anything on the matter :-(

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  • Multiple domains, Exchange 2010, mailbox access via OWA

    - by Rob
    We currently run two separate domains where our new implementation of exchange 2010 is currently on a separate domain the users. My problem is: [email protected] cant access his mailbox at joe@domainb via OWA even though full access and sendas has been granted on domainb's mailbox to domaina's account. I keep receiving the error: Access is denied. The Active Directory resource couldn't be accessed. This may be because the Active Directory object doesn't exist or the object has become corrupted, or because you don't have the correct permissions. anyone able to help please? Take care

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  • Java Deployment Ruleset not working

    - by adbertram
    I've created a Java Deployment Ruleset that looks like this: <ruleset version="1.0+"> <rule> <id location="http://hpfweb.mydomain.com/" /> <action permission="run" version="1.6.0_20" /> </rule> <rule> <id location="http://*.mydomain.com" /> <action permission="run" /> </rule> <rule> </ruleset> I've created a self-signed cert, added it into the keystore as well as Trusted Certification Authorities. I have an app at http://hpfweb.mydomain.com that requires Java v1.6.20 and will error out if any other version is attempted. When only this version is installed on the computer the application works. However, if a newer version is installed, it does not. As you can see, I've attempted to force the version to 1.6.0_20 in the ruleset. I've confirmed the deployment rule set is being applied successfully by going into the Java Control Panel -- Security and "view the active deployment rule set". It is exactly as you see here. I've also looked at the web source for the application and all references point to http://hpfweb* links. When the applet is launched I've brought up task manager and have confirmed the java.exe launched is coming from the jre6 directory. When the newer version is installed, I'm getting the error "accesscontrolexception - access denied (java.awt.AWTPermission.accessEventQueue".

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