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java Programming Glossary: doWhy JSF calls getters multiple times http://stackoverflow.com/questions/2090033/why-jsf-calls-getters-multiple-times as per the Javabeans specification . They should not do any expensive DB business logic at all. For that the bean's.. Just keep getter untouched. It isn't intented to do business logic return someProperty Note that you should not..
How to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet 313 at org.apache.catalina.core.ApplicationFilterChain.doFilter ApplicationFilterChain.java 206 at org.apache.catalina.core.StandardWrapperValve.invoke.. precise knowledge of RFC2388 . You shouldn't try to do this on your own or copypaste some homegrown library less code.. forgot the commons IO. Here's a kickoff example how the doPost of your UploadServlet may look like when using Apache Commons..
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 and the Oracle tutorial is too concise about it. So how do I use it to fire and handle HTTP requests Are there other hints.. the server what encoding the parameters are in. If you don't send any query string then you can leave the Accept Charset.. then you can leave the Accept Charset header away. If you don't need to set any headers then you can even use the URL#openStream..
How do servlets work? Instantiation, session variables and multithreading http://stackoverflow.com/questions/3106452/how-do-servlets-work-instantiation-session-variables-and-multithreading do servlets work Instantiation session variables and multithreading.. only the first time the first user accessed it or does it get instantiated for all the users separately java multithreading.. server's memory as well. When the servletcontainer shuts down it will unload all webapplications and the ServletContext..
How to avoid Java Code in JSP-Files? http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files scriptlets are not unit testable. Maintainability per saldo more time is needed to maintain mingled cluttered duplicated.. deemphasizes the use of scriptlets . ... In the spirit of adopting the model view controller MVC design pattern to reduce.. proper client ready format. Even then this would be better done with a front controller servlet or a custom tag. How to replace..
JSTL in JSF2 Facelets… makes sense? http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense time . Note that JSF's own f xxx and ui xxx tags which do not extend UIComponent i.e. everything except of f param and.. UIViewRoot#encodeAll . So JSF UI components and JSTL tags doesn't run in sync as you'd expect from the coding. You can visualize.. versions older than 2.1.18. Before this version they don't work well together with view scoped beans when partial state..
Generating random numbers in a range with Java http://stackoverflow.com/questions/363681/generating-random-numbers-in-a-range-with-java random numbers in a range with Java I am trying to generate a random.. numbers in a range with Java I am trying to generate a random number with Java but random in a specific range. For example.. I am trying to generate a random number with Java but random in a specific range. For example my range is 5 10 meaning that..
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 do I write a correct micro benchmark in Java How do you write.. do I write a correct micro benchmark in Java How do you write and run a correct micro benchmark in Java I'm looking.. that the compiler and other parts of the JVM are not doing unexpected work during your timing phase. Rule 2.1 Print..
How to choose the right bean scope? http://stackoverflow.com/questions/7031885/how-to-choose-the-right-bean-scope @ApplicationScoped What is the purpose of each How do I choose a proper scope for my bean java jsf jsf 2 share.. scope for application wide data constants such as dropdown lists which are the same for everyone. Abusing an application.. scoped data would make it to be shared among all tabs windows in a single browser session so the enduser may experience..
Java String.equals versus == [duplicate] http://stackoverflow.com/questions/767372/java-string-equals-versus duplicate This question already has an answer here How do I compare strings in Java 27 answers This code separates.. on that. if usuario.equals datos 0 ... NB the compare is done on 'usuario' because that's guaranteed non null in your code..
The Use of Multiple JFrames, Good/Bad Practice? http://stackoverflow.com/questions/9554636/the-use-of-multiple-jframes-good-bad-practice choose fix cancel this then proceed. Multiple frames do not. A dialog or floating tool bar with a parent will come to.. or the other the size varies according to what the user is doing. JLayeredPane far many well ..layered components. JToolBar.. above will minimize restore according to the parent doing so. As items in a JList simple example below . As nodes in..
Android update 17 seems incompatible with external Jars http://stackoverflow.com/questions/10046298/android-update-17-seems-incompatible-with-external-jars from method com.my.project.Main.isValidEmailAddress Do I need to get more recent versions of the jars that have those..
How do I list the files inside a JAR file? http://stackoverflow.com/questions/1429172/how-do-i-list-the-files-inside-a-jar-file this question CodeSource src MyClass.class.getProtectionDomain .getCodeSource if src null URL jar src.getLocation ZipInputStream.. String name e.getName if name.startsWith path to your dir Do something with this entry. ... else Fail... Note that in Java..
Java: recommended solution for deep cloning/copying an instance http://stackoverflow.com/questions/2156120/java-recommended-solution-for-deep-cloning-copying-an-instance it's more about deep cloning than shallow cloning. Do it yourself code the clone by hand properties after properties.. commons lang SerializationUtils Java Deep Cloning Library Dozer Kryo pro same as reflection more control over what will be..
Setting multiple jars in java classpath http://stackoverflow.com/questions/219585/setting-multiple-jars-in-java-classpath able to find class files that are certainly in those jars. Do I need to add each jar file to the classpath separately java..
Trusting all certificates using HttpClient over HTTPS http://stackoverflow.com/questions/2642777/trusting-all-certificates-using-httpclient-over-https certificates share improve this question Note Do not implement this in production code you are ever going to..
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 request with query parameters Setting the URLConnection#setDoOutput to true implicitly sets the request method to POST. The.. connection new URL url .openConnection connection.setDoOutput true Triggers POST. connection.setRequestProperty Accept.. for output you still need to set URLConnection#setDoOutput to true . HttpURLConnection httpConnection HttpURLConnection..
What are the pros and cons of the leading Java HTML parsers? http://stackoverflow.com/questions/3152138/what-are-the-pros-and-cons-of-the-leading-java-html-parsers Java API for XML processing and gives you a org.w3c.dom.Document back which is ready for direct use by JAXP API. The major.. strength of Jsoup. Ones who have worked with org.w3c.dom.Document know what a hell of pain it is to traverse the DOM using.. . String url http stackoverflow.com questions 3152138 Document document new Tidy .parseDOM new URL url .openStream null..
JSTL in JSF2 Facelets… makes sense? http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense UI components to control flow of HTML output generation. Do not bind the var of iterating JSF components to JSTL tag attributes... var of iterating JSF components to JSTL tag attributes. Do not rely on JSF events in JSTL tag attributes. Use at least..
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 and micro benchmarking. A good one is Brian Goetz 2005 . Do not expect too much from micro benchmarks they measure only.. performance. Rule 4 Be aware of initialization effects. Do not print for the first time during your timing phase since.. timing phase since printing loads and initializes classes. Do not load new classes outside of the warmup phase or final reporting..
http://stackoverflow.com/questions/5853879/swing-obtain-image-of-jframe title html body style 'width 200px padding 5px ' h1 Do U C Me h1 Here is a long string that will wrap. The effect..
When to use <ui:include>, tag files, composite components and/or custom components? http://stackoverflow.com/questions/6822000/when-to-use-uiinclude-tag-files-composite-components-and-or-custom-componen overhead during building restoring of the view. Do not abuse them if you merely want the basic functionality which.. already possible with a simple include file or tag file. Do not use the ease of configuration read no .taglib.xml file needed..
Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing? http://stackoverflow.com/questions/7229226/should-i-avoid-the-use-of-setpreferredmaximumminimumsize-methods-in-java-swi can exactly satisfy all desired layout needs. Do I really need to implement a new LayoutManager for every little.. can exactly satisfy all desired layout needs. Do I really need to implement a new LayoutManager for every little..
How Do I Use KeyEventDispatcher http://stackoverflow.com/questions/7940173/how-do-i-use-keyeventdispatcher Do I Use KeyEventDispatcher I have been trying to make a Pong..
http://stackoverflow.com/questions/995514/https-connection-android If i do normal http it is working perfectly fine. Do I have to accept the server certificate somehow java android..
Dynamic Graphics Object Painting In Java http://stackoverflow.com/questions/10628492/dynamic-graphics-object-painting-in-java the best way to do this And without crossing any specifics DO NOTs that I don't know about . I'm working on visually displaying..
http://stackoverflow.com/questions/13462952/google-drive-sdk-exception token from a particular Google account chosen by the user. DO NOT RUN THIS DIRECTLY. It must be run asynchronously inside..
any tool for java object to object mapping? [closed] http://stackoverflow.com/questions/1432764/any-tool-for-java-object-to-object-mapping to object mapping closed Friends I am trying to convert DO to DTO using java and looking for automated tool before start..
Java: Swing Libraries & Thread Safety http://stackoverflow.com/questions/182316/java-swing-libraries-thread-safety awesome Swing UI work Palantir Technologies . Note I DO NOT work for them just an example of awesome swing. Shame no..
Managing highly repetitive code and documentation in Java http://stackoverflow.com/questions/2337170/managing-highly-repetitive-code-and-documentation-in-java file has been auto generated from the template xxxxx DO NOT MODIFY THIS FILE FOR IT SHALL GET OVERWRITTEN share improve..
Incompatible magic value 1008813135 http://stackoverflow.com/questions/2390733/incompatible-magic-value-1008813135 is the usual first 4 bytes of a Java file. 1008813135 is DO in Latin encoding which is in all probability the start of DOCTYPE..... in Latin encoding which is in all probability the start of DOCTYPE... . It is therefore likely the start of a 404 error or..
http://stackoverflow.com/questions/2405885/any-good-jsch-examples strPassword UNCOMMENT THIS FOR TESTING PURPOSES BUT DO NOT USE IN PRODUCTION sesConnection.setConfig StrictHostKeyChecking..
How to limit setAccessible to only “legitimate” uses? http://stackoverflow.com/questions/2481862/how-to-limit-setaccessible-to-only-legitimate-uses the configuration I guess one more important question is DO I NEED TO WORRY ABOUT THIS None of my classes have any semblance.. security design reflection share improve this question DO I NEED TO WORRY ABOUT THIS That depends entirely on what types..
Steps in creating a web service using Axis2 - The client code http://stackoverflow.com/questions/2559074/steps-in-creating-a-web-service-using-axis2-the-client-code axis2 WEB INF services But here comes my problem HOW DO I ACCESS THE METHOD World String name i.e. I am clueless about..
Netbeans GUI editor generating its own incomprehensible code http://stackoverflow.com/questions/2561480/netbeans-gui-editor-generating-its-own-incomprehensible-code JAVA Desktop application it creates some code which I DO NOT RECOGNISE AT ALL as what i had learnt in swing. It imports..
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 names.add Boolean.FALSE compilation error Of course if you DO want names to allow a Boolean then you can declare it as List..
How come invoking a (static) method on a null reference doesn't throw NullPointerException? http://stackoverflow.com/questions/3293353/how-come-invoking-a-static-method-on-a-null-reference-doesnt-throw-nullpointe of a static member access. Why aNull null aNull.test DO NOT EVER DO THIS invokes Why.test does NOT throw NullPointerException.. member access. Why aNull null aNull.test DO NOT EVER DO THIS invokes Why.test does NOT throw NullPointerException When..
How to compile dynamic library for a JNI application on linux? http://stackoverflow.com/questions/3950635/how-to-compile-dynamic-library-for-a-jni-application-on-linux jni Hello I've obtained Hello.class and Hello.h . Hello.h DO NOT EDIT THIS FILE it is machine generated #include jni.h Header..
Build and Version Numbering for Java Projects (ant, cvs, hudson) http://stackoverflow.com/questions/690419/build-and-version-numbering-for-java-projects-ant-cvs-hudson comment This file is automatically generated DO NOT EDIT entry key buildtime value builtat entry key build..
How to convert int[] to Integer[] in Java? http://stackoverflow.com/questions/880581/how-to-convert-int-to-integer-in-java frequencies new HashMap Integer Double for int q data DO SOMETHING TO convert q from int to Integer so I can put it in..
Fastest way to iterate over all the chars in a String http://stackoverflow.com/questions/8894258/fastest-way-to-iterate-over-all-the-chars-in-a-string NEW JAVA 8 String's IntStream AND PASS IT A PREDICATE TO DO THE CHECKING int streamMethod final String data final IntPredicate.. n 0 n MAX_STRING_SIZE n n 0 1 n 2 sizes.add n CREATE RANDOM FOR SHUFFLING ORDER OF TESTS final Random random new Random.. nanos System.nanoTime time MAKE A TEST STRING OF RANDOM CHARACTERS A Z private String makeTestString int testSize char..
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