Search Results

Search found 46178 results on 1848 pages for 'java home'.

Page 808/1848 | < Previous Page | 804 805 806 807 808 809 810 811 812 813 814 815  | Next Page >

  • Returning an anonymous class that uses a final primitive. How does it work?

    - by Tim P
    Hi, I was wondering if someone could explain how the following code works: public interface Result { public int getCount(); public List<Thing> getThings(); } class SomeClass { ... public Result getThingResult() { final List<Thing> things = .. populated from something. final int count = 5; return new Result { @Override public int getCount() { return count; } @Override public List<Thing> getThings(); return things; } } } ... } Where do the primitive int , List reference and List instance get stored in memory? It can't be on the stack.. so where? Is there a difference between how references and primitives are handled in this situation? Thanks a bunch, Tim P.

    Read the article

  • Grabbing random object from ArrayList is not random.

    - by Isai
    I am creating a method where if you pass in a parameter of type Random, then it will return a random object. Here is basically what I am trying to do: public T choose(Random r) { int randomInt = r.nextInt(randomList.size()); // randomList is just a instance variable return randomList.get(randomInt); } The random list has this the following strings:[2, 2, 2, 1, 1, 1, 1, c, c, c, a, a, a, a] Then I made a driver with the following code for (int i = 0; i < 10; i++) { System.out.print(rndList.choose(rnd)); // rnd is initialized as a static Random variable } However my outputs are not coming out random. I used the debugger and found out that my choose method generates an integer that is relatively low, so it will always print out either 2's or 1's but never c's or a's. I can't figure out why this is happening and help would be greatly appreciated.

    Read the article

  • Powermock Slows Down Test Startup on Eclipse/Fedora 10 when on NTFS partition

    - by MrWiggles
    I've just started having a proper play with Powermock and noticed that it slows down test startup immensely. A quick look at top while it was running shows that mount.nfts-3g was taking up most of the CPU. I moved Eclipse and my source directory to ext3 partitions to see if that was a problem and the tests now startup quicker but there's still a noticeable delay. Is this normal with Powermock or am I missing something obvious?

    Read the article

  • printing out prime numbers from array

    - by landscape
    I'd like to print out all prime numbers from an array with method. I can do it with one int but don't know how to return certain numbers from array. Thanks for help! public static boolean isPrime(int [] tab) { boolean prime = true; for (int i = 3; i <= Math.sqrt(tab[i]); i += 2) if (tab[i] % i == 0) { prime = false; break; } for(int i=0; i<tab.length; i++) if (( tab[i]%2 !=0 && prime && tab[i] > 2) || tab[i] == 2) { return true; } else { return false; } //return prime; } thanks both of you. Seems like its solved: public static void isPrime(int[] tab) { for (int i = 0; i < tab.length; i++) { if (isPrimeNum(tab[i])) { System.out.println(tab[i]); } } } public static boolean isPrimeNum(int n) { boolean prime = true; for (long i = 3; i <= Math.sqrt(n); i += 2) { if (n % i == 0) { prime = false; break; } } if ((n % 2 != 0 && prime && n > 2) || n == 2) { return true; } else { return false; } }

    Read the article

  • Which layer implement Transaction mechanism

    - by didxga
    I knew ORM tools, such as Hibernate, have their own transaction management mechanism. We can also harness transaction by using JDBC directly. And DBMS has its transaction facilities either. I wonder that in which layer(s) the transaction is actually implemented in a J2EE application? Regards!

    Read the article

  • HttpServletResponse encoding problem @ WebSphere 6.1

    - by user295509
    My application is working fine with JBOSS 4.2.2 application server. However when I deploy same application at WebSphere 6.1. I get HttpServletResponse encoding problem. I am getting response on web browser as shown below:- ??][s?8?~N??0?uRY?d;?H?e??e??d6?%??A"yH????????M??x?? ??&A??h??ntCT???????UM??BW???H?T?4???????t??G?f =l?&5[?j?B{???6???V???6???7???????(???5?4????.?!????j??i?V????? X?Q??^<??????????sK????h?{y1?] [??T??- ?Dm?_?7????P??<*??VvQ?:6?KCc? 6?]????V_?zPC?c???Ÿ???zsW????_y?*???2? ??)?r?~?L%^?M???kzduY??BW4? ?.?????V????{??O????/?l?ii8?S?Q?cJ?56GAogp?w???7'??9vf???E?,??? 9?q?x???z?H????????;????4?? ?5?????iWF??l????o^??Fy?|?d???????zMa,????y??e \<?J???M?:miz????z?Z5???????^/???e?:?j7??'??~?@?V?V???nN?&??Q%}(??????*u???#???S?BO??Lð????+??x?8?/?E??????6_k?1)?@q. ?S%??5?=?$?CSBt?c ????+hX??2?>t?s?+?M????????nv$??13m??? I would like to mentioned that this encoding problem is not arise when I have less data (or HTML element). Means even at WebSphere, It is working fine when there are up to approximately 300 HTML element are render. When HTML elements over than certain number then web page is shown with encoded form. Moreover at Jboss 4.2.2 application is working fine up to long -long html element. I set content type as: <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> This issue is reproducible at FF 3.6 and IE 7 and 8 browser. Can anyone help me out? Am I missing some setting?

    Read the article

  • Why does multiplying a double by -1 not give the negative of the current answer

    - by Ankur
    I am trying to multiply a double value by -1 to get the negative value. It continues to give me a positive value double man = Double.parseDouble(mantissa); double exp; if(sign.equals("plus")){ exp = Double.parseDouble(exponent); } else { exp = Double.parseDouble(exponent); exp = exp*-1; } System.out.println(man+" - "+sign+" - "+exp); The printed result is 13.93 - minus - 2.0 which is correct except that 2.0 should be -2.0

    Read the article

  • Ivy failed to resolve dependency : What to check, what to do ?

    - by fardon57
    Hi everyone, I'm using Ivy to resolve dependency in my very small project. It's the first time I'm doing that and it's more to learn as my project is very small. I had a problem 5 minutes ago, when trying to download log4j. My configuration is very basic, I have an ant task : <target name="resolve" description="--> retrieve dependencies with ivy"> <ivy:retrieve/> </target> and my Ivy.xml file is like this : <dependency org="javax.servlet" name="servlet-api" rev="2.5" /> <dependency org="log4j" name="log4j" rev="1.2.15" /> </dependencies> The problem is seems to happen when ivy tries to download jms 1.1 (I suppose it's needed for log4j) as I can see in the console : : ::::::::::::::::::::::::::::::::::::::::::::: [ivy:retrieve] :: FAILED DOWNLOADS :: [ivy:retrieve] :: ^ see resolution messages for details ^ :: [ivy:retrieve] :::::::::::::::::::::::::::::::::::::::::::::: [ivy:retrieve] :: javax.jms#jms;1.1!jms.jar [ivy:retrieve] :: com.sun.jdmk#jmxtools;1.2.1!jmxtools.jar [ivy:retrieve] :: com.sun.jmx#jmxri;1.2.1!jmxri.jar [ivy:retrieve] :::::::::::::::::::::::::::::::::::::::::::::: Is there anything I can do ? Thanks a lot guys. F

    Read the article

  • How to keep the session of user login?

    - by YaW
    Hi, I have an app that requires user to register. I've got the app conected to PHP in my server to do the logic of register/login and so, this is not problem at all. But, I want to keep a session of the user in local, so the user doesn't have to login again every time he runs the app. So, I want something like this: First time user, he opens the app, register and login. Do some stuff with the app and closes it. Open the app again, the user is recognized so he doesn't need to login again. I only need to store an ID and a Username (both fetched from the DB in the login php method). What's the best way to do this?? I've thought about doing a custom preference, store the data in files or even a local DB (sqlite). Any suggestions?

    Read the article

  • JDBC CommunicationsException with MySQL Database

    - by Dominik Siebel
    I'm having a little trouble with my MySQL- Connection- Pooling. This is the case: Different jobs are scheduled via Quartz. All jobs connect to different databases which works fine the whole day while the nightly scheduled jobs fail with a CommunicationsException... Quartz-Jobs: Job1 runs 0 0 6,10,14,18 * * ? Job2 runs 0 30 10,18 * * ? Job3 runs 0 0 5 * * ? As you can see the last job runs at 18 taking about 1 hour to run. The first job at 5am is the one that fails. I already tried all kinds of parameter-combinations in my resource config this is the one I am running right now: <!-- Database 1 (MySQL) --> <Resource auth="Container" driverClassName="com.mysql.jdbc.Driver" maxActive="100" maxIdle="30" maxWait="10000" removeAbandoned="true" removeAbandonedTimeout="60" logAbandoned="true" type="javax.sql.DataSource" name="jdbc/appDbProd" username="****" password="****" url="jdbc:mysql://127.0.0.1:3306/appDbProd?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=UTF-8" testWhileIdle="true" testOnBorrow="true" testOnReturn="true" validationQuery="SELECT 1" timeBetweenEvictionRunsMillis="1800000" /> <!-- Database 2 (MySQL) --> <Resource auth="Container" driverClassName="com.mysql.jdbc.Driver" maxActive="100" maxIdle="30" maxWait="10000" removeAbandoned="true" removeAbandonedTimeout="60" logAbandoned="true" type="javax.sql.DataSource" name="jdbc/prodDbCopy" username="****" password="****" url="jdbc:mysql://127.0.0.1:3306/prodDbCopy?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=UTF-8" testWhileIdle="true" testOnBorrow="true" testOnReturn="true" validationQuery="SELECT 1" timeBetweenEvictionRunsMillis="1800000" /> <!-- Database 3 (MSSQL)--> <Resource auth="Container" driverClassName="net.sourceforge.jtds.jdbc.Driver" maxActive="30" maxIdle="30" maxWait="100" removeAbandoned="true" removeAbandonedTimeout="60" logAbandoned="true" name="jdbc/catalogDb" username="****" password="****" type="javax.sql.DataSource" url="jdbc:jtds:sqlserver://127.0.0.1:1433;databaseName=catalog;useNdTLMv2=false" testWhileIdle="true" testOnBorrow="true" testOnReturn="true" validationQuery="SELECT 1" timeBetweenEvictionRunsMillis="1800000" /> For obvious reasons I changed IPs, Usernames and Passwords but they can be assumed to be correct, seeing that the application runs successfully the whole day. The most annoying thing is: The first job that runs first queries Database2 successfully but fails to query Database1 for some reason (CommunicationsException): Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 39,376,539 milliseconds ago. The last packet sent successfully to the server was 39,376,539 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. Any ideas? Thanks!

    Read the article

  • image viewer website

    - by ehab refaat
    i asked to make a website to view images and manage it's actions like max, min, autofit,..... (some thing like picasa but as a web application ) what is the suitable tool for that. JSF, JBoos Seam, dojo, digit ? and if any reference to enhance my skills on that branch will be appreciated.

    Read the article

  • How to get size of bytes?

    - by k80sg
    How do I obtain the number of bytes before allocating the byte size of the array 'handsize' as shown below as the incoming ByteArray data are sent in 3 different sizes. Thanks. BufferedInputStream bais = new BufferedInputStream(requestSocket.getInputStream()); DataInputStream datainput = new DataInputStream(bais); //need to read the number of bytes here before proceeding. byte[] handsize = new byte[bytesize]; datainput.readFully(handsize);

    Read the article

  • Test problem using JUnitPerf

    - by allenzzzxd
    Hi, guys, I'm writing a JUnit test using JUnitPerf. Here, I want to generate some entries and use them to update a database. To test the capacity of the database, I want several test to run simultaneously or randomly, so I use, for example: Test loadTest = new LoadTest(testCase, n); But, still, I have to insure that in each test, a different update source will be used so that a different entry in the database will be updated. So my question is how can I realize this? Thanks a lot Allen

    Read the article

  • Need to convert this for loop to a while loop

    - by Bragaadeesh
    Hi guys, I solved a problem recently. But I have this one piece of code where I dont utilize the for loop initialization and condition check. It looks a bit odd that way for a for loop. I want to convert it into a while loop. Please help me do it. I tried many times, but somewhere something is missing. for(;;current =(current+1)%n){ if(eliminated[current%n]){ continue; }else{ inkiPinki++; if(inkiPinki == m){ eliminated[current%n] = true; printStatus(eliminated, people); remainingGuys--; break; } } } In the above code eliminiated[index] is a boolean.

    Read the article

  • About Data Objects and DAO Design when using Hibernate

    - by X. Ma
    I'm hesitating between two designs of a database project using Hibernate. Design #1. (1) Create a general data provider interface, including a set of DAO interfaces and general data container classes. It hides the underneath implementation. A data provider implementation could access data in database, or an XML file, or a service, or something else. The user of a data provider does not to know about it. (2) Create a database library with Hibernate. This library implements the data provider interface in (1). The bad thing about Design #1 is that in order to hide the implementation details, I need to create two sets of data container classes. One in the general data provider interface - let's call them DPI-Objects, the other set is used in the database library, exclusively for entity/attribute mapping in Hibernate - let's call them H-Objects. In the DAO implementation, I need to read data from database to create H-Objects (via Hibernate) and then convert H-Objects into DPI-Objects. Design #2. Do not create a general data provider interface. Expose H-Objects directly to components that use the database lib. So the user of the database library needs to be aware of Hibernate. I like design #1 more, but I don't want to create two sets of data container classes. Is that the right way to hide H-Objects and other Hibernate implementation details from the user who uses the database-based data provider? Are there any drawbacks of Design #2? I will not implement other data provider in the new future, so should I just forget about the data provider interface and use Design #2? What do you think about this? Thanks for your time!

    Read the article

  • Maven Mojo & SCM Plugin: Check for a valid working directory

    - by Patrick Bergner
    Hi there. I'm using maven-scm-plugin from within a Mojo and am trying to figure out how to determine if a directory D is a valid working directory of an SCM URL U (i.e. a checkout of U to D already happened). The context is that I want to do a checkout of U if D is a working set or do an update if it isn't. The plan is to check out U to D if D does not exist, update D if D is a valid working directory of U, display an error if D exists and is not a valid working directory of U. What I tried is to call ScmManager.status(), ScmManager.list() and ScmManager.changelog() and try to guess something from their results. But that didn't work. The results from status and changelog always return something positive (isSuccess() = true, getChangedFiles() = valid List, no exceptions to catch), whereas list throws an exception in any case. ScmRepository and ScmFileSet don't seem to provide suitable methods as well. An option would be to always do an update if D exists but then I cannot tell if it is a working directory of U or any SCM working directory at all. The ideal solution would be independent of the actual SCM system and a specific ScmVersion. Thanks for your help! Patrick

    Read the article

  • Hibernate save() and transaction rollback

    - by Marco
    Hi, In Hibernate when i save() an object in a transaction, and then i rollback it, the saved object still remains in the DB. It's strange because this issue doesn't happen with the update() or delete() method, just with save(). Here is the code i'm using: DbEntity dbEntity = getDbEntity(); HibernateUtil.beginTransaction(); Session session = HibernateUtil.getCurrentSession(); session.save(dbEntity); HibernateUtil.rollbackTransaction(); And here is the HibernateUtil class (just the involved functions, i guarantee the getSessionFactory() method works well - there is an Interceptor handler, but it doesn't matter now): private static final ThreadLocal<Session> threadSession = new ThreadLocal<Session>(); private static final ThreadLocal<Transaction> threadTransaction = new ThreadLocal<Transaction>(); /** * Retrieves the current Session local to the thread. * <p/> * If no Session is open, opens a new Session for the running thread. * * @return Session */ public static Session getCurrentSession() throws HibernateException { Session s = (Session) threadSession.get(); try { if (s == null) { log.debug("Opening new Session for this thread."); if (getInterceptor() != null) { log.debug("Using interceptor: " + getInterceptor().getClass()); s = getSessionFactory().openSession(getInterceptor()); } else { s = getSessionFactory().openSession(); } threadSession.set(s); } } catch (HibernateException ex) { throw new HibernateException(ex); } return s; } /** * Start a new database transaction. */ public static void beginTransaction() throws HibernateException { Transaction tx = (Transaction) threadTransaction.get(); try { if (tx == null) { log.debug("Starting new database transaction in this thread."); tx = getCurrentSession().beginTransaction(); threadTransaction.set(tx); } } catch (HibernateException ex) { throw new HibernateException(ex); } } /** * Rollback the database transaction. */ public static void rollbackTransaction() throws HibernateException { Transaction tx = (Transaction) threadTransaction.get(); try { threadTransaction.set(null); if ( tx != null && !tx.wasCommitted() && !tx.wasRolledBack() ) { log.debug("Tyring to rollback database transaction of this thread."); tx.rollback(); } } catch (HibernateException ex) { throw new HibernateException(ex); } finally { closeSession(); } } Thanks

    Read the article

  • How do I detect if a display is in High Contrast mode?

    - by banjollity
    I'm testing my company's established Swing application for accessibility issues. With high contrast mode enabled on my PC certain parts of this application are rendered properly (white-on-black) and some incorrectly (black-on-white). The bits that are correct are the native components (JButton, JLabel and whatnot) and third party components from the likes of JIDE. The incorrect bits are custom components and renderers developed in-house without consideration for high-contrast mode. Clearly it's possible to detect when high-contrast mode is enabled. How do I do this?

    Read the article

  • Changing content of HTMLDocument displayed in a JTextPane

    - by kayahr
    I'm displaying some tables as HTML code (rendered by a Freemarker template) with a JTextPane. I also have some HTML links in this HTML output which can be used to interact with the values of the table (For example "Delete a row" and stuff like this). Currently I always recreate the whole HTML output on each change and replace the whole document in the JTextPane with the new one. This is getting really slow and the JTextPane always changes the scroll position when I do this. Is it possible to change only parts of the HTML code during runtime without replacing the whole document? In a real browser I would use the DOM and do something like document.getElementById("price").innerHTML = "$123.44". Is something like that possible with the HTMLDocument in a JTextPane?

    Read the article

  • Resizing JPopupMenu and avoiding a "flicker" issue

    - by Avrom
    Hi, I am trying to implement a search results popup list similar to the style found here: http://www.inquisitorx.com/ (I'm not trying to implement a Google search, I'm just using this as a rough example of the style I'm working on.) In any event, I am implementing this by using a JList contained within a JPopupMenu which is popped up underneath a JTextField. When a user enters search terms, the list changes to reflect different matching results. I then call pack on the JPopupMenu to resize it. This works, however, it creates a slight flicker effect since it is actually hiding the popup and showing a popup. (See the private method getPopup in JPopupMenu where it explicitly does this.) Is there any way to just get it to just resize itself (aside from using a JWindow)?

    Read the article

  • FACING ERROR WHILE CALLING AXIS2 WEB SERVICE ...

    - by darshanv
    Hello , I am new to axis ,I have created a web servcie with couple of methods using axis2 and deployed it on tomcat.And am calling that web service from my android program with the help of ksoap.But wen i call a method which doesn't take any parameter am gettin fine reply from web service which i can able to see on my screen,But wen i call anothr method which takes a string argument am getting namespace exception on server WEB SERVICE CODE IS ..... package Guru; public class DarshanSays { public String getMsg(String h) { return h+" ..the power of change is eVolution..."; } public String getEmpty(String d)throws Exception { return "empty string from tomcattttttttttt"; } } //AND program is String soap_action="http://Guru/getEmpty"; String method_nm="getEmpty"; String nmspc="http://Guru/"; String url7="//192.168.10.182:8080/axis2/services/Friday";//http: SoapObject request = new SoapObject(url7,method_nm); /*sending method parameters with SoapObject */ request.newInstance(); request.addProperty("h","darshan.....");//sending a parameter to a method SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.bodyOut=request; envelope.dotNet = true; envelope.encodingStyle = SoapSerializationEnvelope.XSD; Log.d("Step","3"); envelope.dotNet=true; /*setting outputsoap object sending request */ envelope.setOutputSoapObject(request); /*HttpTransportSE object creating sending it url */ androidHttpTransport = new HttpTransportSE(url7); //androidHttpTransport.setXmlVersionTag(""); Log.d("Step","4"); try{ androidHttpTransport.debug=true; androidHttpTransport.call(nmspc,envelope); } catch(Exception e) { Log.d("Transportcall",""+e); alert=new AlertDialog.Builder(this); alert.setMessage(""+e); alert.show(); } //exception is throw. Log.d("Step","5"); try { Log.d("giving...","resp"); SoapPrimitive sp=(SoapPrimitive)envelope.getResponse(); String hh=sp.toString(); Log.d("reply from web ser",".."+hh.toString()); //and erorr msg is SoapFault - faultcode:'soapenv:Server' faultstring: 'namespace mismatch require http://Guru found 192.168.10.182:8080/axis2/services/Friday' faultactor: 'null' detail: org.kxml2.kdom.Node@43d31390 ERROR IS coming only when am calling parameterized method. I am facing this issue only when am giving a call to parameterized method. Please Help.. thanks Darshan V

    Read the article

  • JPA optimistic lock - setting @Version to entity class cause query to include VERSION as column

    - by masato-san
    I'm using JPA Toplink Essential, Netbean6.8, GlassFish v3 In my Entity class I added @Version annotation to enable optimistic locking at transaction commit however after I added the annotation, my query started including VERSION as column thus throwing SQL exception. None of this is mentioned in any tutorial I've seen so far. What could be wrong? Snippet public class MasatosanTest2 implements Serializable { private static final long serialVersionUID = 1L; @Id @Basic(optional = false) @Column(name = "id") private Integer id; @Column(name = "username") private String username; @Column(name = "note") private String note; //here adding Version @Version int version; query used: SELECT m FROM MasatosanTest2 m Internal Exception: com.microsoft.sqlserver.jdbc.SQLServerException Call: SELECT id, username, note, VERSION FROM MasatosanTest2

    Read the article

  • Why does this break statement break not work?

    - by Roman
    I have the following code: public void post(String message) { final String mess = message; (new Thread() { public void run() { while (true) { try { if (status.equals("serviceResolved")) { output.println(mess); Game.log.fine("The following message was successfully sent: " + mess); break; } else { try {Thread.sleep(1000);} catch (InterruptedException ie) {} } } catch (NullPointerException e) { try {Thread.sleep(1000);} catch (InterruptedException ie) {} } } } }).start(); } In my log file I find a lot of lines like this: The following message was successfully sent: blablabla The following message was successfully sent: blablabla The following message was successfully sent: blablabla The following message was successfully sent: blablabla And my program is not responding. It seems to me that the break command does not work. What can be a possible reason for that. The interesting thing is that it happens not all the time. Sometimes my program works fine, sometimes the above described problem happens.

    Read the article

< Previous Page | 804 805 806 807 808 809 810 811 812 813 814 815  | Next Page >