java Programming Glossary: mayWhy JSF calls getters multiple times http://stackoverflow.com/questions/2090033/why-jsf-calls-getters-multiple-times the evaluated result of the EL expression at all as it may return different values on each call for example when it's dependent.. constructor or initialization block for the job because it may be invoked multiple times if you're using a bean management..
What is a Null Pointer Exception? http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception compiler will catch the problem and let you know that num may not have been initialized but sometime you write code that does.. that does not directly create the object. For instance you may have a method as follows public void doSomething Integer num..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android Why is that Honestly I haven't a clue. I believe procrank may be the more accurate one... but really this just leave the point..
How to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet a kickoff example how the doPost of your UploadServlet may look like when using Apache Commons FileUpload protected void..
What is a raw type and why shouldn't we use it? http://stackoverflow.com/questions/2770321/what-is-a-raw-type-and-why-shouldnt-we-use-it parameter List Object List String etc are all List so it may be tempting to just say that they're just List instead. However..
How to use java.net.URLConnection to fire and handle HTTP requests? http://stackoverflow.com/questions/2793150/how-to-use-java-net-urlconnection-to-fire-and-handle-http-requests Are there other hints and best practices on this that may be useful java http httprequest httpurlconnection urlconnection.. concatenated to the URL using . The Accept Charset header may hint the server what encoding the parameters are in. If you.. Content Length contentLength . This may cause OutOfMemoryException s whenever you concurrently send..
What is a serialVersionUID and why should I use it? http://stackoverflow.com/questions/285793/what-is-a-serialversionuid-and-why-should-i-use-it computation is highly sensitive to class details that may vary depending on compiler implementations and can thus result..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog . In the next example we are going to use two classes you may not be aware of ResultReceiver and IntentService . ResultReceiver.. and has write permissions. If download is too big you may want to implement a way to resume the download if previous attempts..
GUI not working after rewriting to MVC http://stackoverflow.com/questions/3066590/gui-not-working-after-rewriting-to-mvc I have a Mastermind game in a single file working fine maybe apart of the fact that Check button is invisible at start.. obtained from the Model . Similarly the Controller may reset the Model . In particular there is no drawing in the Model..
JSTL in JSF2 Facelets… makes sense? http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense from top to bottom again producing the HTML output. This may lead to unexpected results when using JSTL tags in for example..
Design Patterns web based applications http://stackoverflow.com/questions/3541077/design-patterns-web-based-applications request HttpServletResponse response throws Exception You may want to make the Exception more specific with a custom exception..
How do I write a correct micro-benchmark in Java? http://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java the first time in the timing phase because the compiler may junk and recompile the code based on an earlier optimistic assumption..
How to choose the right bean scope? http://stackoverflow.com/questions/7031885/how-to-choose-the-right-bean-scope tabs windows in a single browser session so the enduser may experience inconsitenties when interacting with every view after..
Need to reset the value of sequence in Oracle http://stackoverflow.com/questions/10159840/need-to-reset-the-value-of-sequence-in-oracle value of auto_increment to maximum 1 value of that field May conceptually be incorrect but it works . In Oracle 10g I'm using..
Java Refuses to Start - Could not reserve enough space for object heap http://stackoverflow.com/questions/1058471/java-refuses-to-start-could-not-reserve-enough-space-for-object-heap version 3.2.3 20030502 Red Hat Linux 3.2.3 52 #1 SMP Tue May 17 17 52 23 EDT 2005 'uname a' gives us the following on BOTH..
Facebook offline access step-by-step http://stackoverflow.com/questions/1059640/facebook-offline-access-step-by-step documentation for more information. You'll have till May 1 2012 at which date this setting will be disabled. refer to..
Is there any way to accept only numeric values in a JTextField? http://stackoverflow.com/questions/1313390/is-there-any-way-to-accept-only-numeric-values-in-a-jtextfield validation of the user input. @param aFormat The format. May not be @code null public ImprovedFormattedTextField Format aFormat.. initialized with @code aValue . @param aFormat The format. May not be @code null @param aValue The initial value public ImprovedFormattedTextField..
Compiling a java program into an exe [duplicate] http://stackoverflow.com/questions/2011664/compiling-a-java-program-into-an-exe New release of x64 version can create 64 bits executives. May 18 2008 Both wizard mode and command line mode supported. May.. 18 2008 Both wizard mode and command line mode supported. May 18 2008 Download http www.brothersoft.com jartoexe 75019.html..
Why is JavaScript called JavaScript, since it has nothing to do with Java? [closed] http://stackoverflow.com/questions/2018731/why-is-javascript-called-javascript-since-it-has-nothing-to-do-with-java Eich That 䏭 right. It was all within six months from May till December 1995 that it was Mocha and then LiveScript. And..
How do I change the default application icon in Java? http://stackoverflow.com/questions/209812/how-do-i-change-the-default-application-icon-in-java ClassLoader.getSystemResource com xyz resources camera.png May or may not require a ' ' at the front of the path. share improve..
How to handle calendar TimeZones using Java? http://stackoverflow.com/questions/230126/how-to-handle-calendar-timezones-using-java is what I get as a result Short Format for easy reading May 1 2008 11 12 PM java calendar timezone share improve this..
When should I use “this” in a class? http://stackoverflow.com/questions/2411270/when-should-i-use-this-in-a-class if I use x instead of this.x in some of the methods May be x will refer to a variable which is local for the considered..
How do I convert CamelCase into human-readable names in Java? http://stackoverflow.com/questions/2559759/how-do-i-convert-camelcase-into-human-readable-names-in-java XML Parser GL11Version GL 11 Version 99Bottles 99 Bottles May5 May 5 BFG9000 BFG 9000 for String test tests System.out.println.. GL11Version GL 11 Version 99Bottles 99 Bottles May5 May 5 BFG9000 BFG 9000 for String test tests System.out.println.. 99Bottles Letter behind me non letter in front of me GL11 May5 BFG9000 References regular expressions.info Lookarounds Related..
http://stackoverflow.com/questions/2790144/avoiding-instanceof-in-java properties else if obj instance of Interface4 likewise. May want to also handle case of object that implements both interfaces...
How to convert String to Date without knowing the format? http://stackoverflow.com/questions/3707485/how-to-convert-string-to-date-without-knowing-the-format 2010 08 05 then it can be either 5th August 2010 or 8th May 2010 you need to know the date format or at least prioritise..
Should I initialize variable within constructor or outside constructor [duplicate] http://stackoverflow.com/questions/3918578/should-i-initialize-variable-within-constructor-or-outside-constructor are using 1st convention others are using 2nd convention. May I know which convention do you all recommend and why java ..
How to clear/empty Java Stringbuilder http://stackoverflow.com/questions/5192512/how-to-clear-empty-java-stringbuilder Java java stringbuilder share improve this question May I suggest that you allocate a new one instead of clearing It's..
Line2D decoration tips needed - Graphics2D http://stackoverflow.com/questions/7342979/line2d-decoration-tips-needed-graphics2d middle bit from it Is it possible to achieve this if yes May I please have some direction. Thank you for any kind of help...
Why use Interfaces, Multiple Inheritance vs Interfaces, Benefits of Interfaces? http://stackoverflow.com/questions/8531292/why-use-interfaces-multiple-inheritance-vs-interfaces-benefits-of-interfaces of base class in derived class without writing it again. May be this is the most important thing for inheritance to be there...
How to query a web service via POST request in Android? http://stackoverflow.com/questions/9237082/how-to-query-a-web-service-via-post-request-in-android might apply to my problem. I haven't tried yet. EDIT May 09 2012 Here is the error message from Eclipse when you try..
Java Array sort: Quick way to get a sorted list of indices of an array http://stackoverflow.com/questions/951848/java-array-sort-quick-way-to-get-a-sorted-list-of-indices-of-an-array sort function . Is there an easy way to do that 5 LOC May there be a solution that does not need to allocate a new object..
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