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java Programming Glossary: asHow to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet use the POST method and the enctype attribute of the form has to be set to multipart form data . form action upload method.. it You can in theory parse the request body yourself based on ServletRequest#getInputStream . However this is a precise.. RFC2388 . You shouldn't try to do this on your own or copypaste some homegrown library less code found elsewhere on the Internet...
Overriding equals and hashCode in Java http://stackoverflow.com/questions/27581/overriding-equals-and-hashcode-in-java equals and hashCode in Java What issues pitfalls must be considered when overriding.. pitfalls must be considered when overriding equals and hashCode java override equals hashcode share improve this question.. when overriding equals and hashCode java override equals hashcode share improve this question The theory for the language..
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 handle HTTP requests URLConnection is pretty often asked here and the Oracle tutorial is too concise about it. So.. a disclaimer beforehand the posted code snippets are all basic examples. You'll need to handle trivial IOException s and.. consorts yourself. Preparing We first need to know at least the URL and the charset. The parameters are optional and depend..
How do servlets work? Instantiation, session variables and multithreading http://stackoverflow.com/questions/3106452/how-do-servlets-work-instantiation-session-variables-and-multithreading webserver which holds numerous servlets. For information passing among those servlets I am getting the servlet context and.. different for each user. If they are different then how was the server able to differentiate between different users One.. web.xml will be created once and kept in server's memory as well. When the servletcontainer shuts down it will unload all..
How to avoid Java Code in JSP-Files? http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files a method to avoid Java code in JSP files. Can someone please tell me the alternative JSP 2 lines and how this technique.. whenever the same functionality is possible by tag classes. Here are several cites of relevance From JSP 1.2 Specification.. in your pages. Pages that use JSTL are in general easier to read and maintain. ... Where possible avoid JSP scriptlets..
http://stackoverflow.com/questions/40480/is-java-pass-by-reference Java &ldquo pass by reference&rdquo I always thought Java was pass by reference.. &ldquo pass by reference&rdquo I always thought Java was pass by reference however I've seen a couple of blog posts e.g... &ldquo pass by reference&rdquo I always thought Java was pass by reference however I've seen a couple of blog posts e.g...
http://stackoverflow.com/questions/5621338/how-to-add-jtable-in-jpanel this question Nested Layout Example The Java Tutorial has comprehensive information on using layout managers. See the.. Within a Container lesson for further details. One aspect of layouts that is not covered well by the tutorial is that.. layouts. All the layouts that are explicitly set are shown as a titled border for the panel on which they are used. Notable..
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 use of those methods The methods have been defined for a reason. So when should I use them In which context For what purposes.. yes won't this lead to a proliferation of LayoutManager classes which will become difficult to maintain In a situation where.. for application code The methods have been defined for a reason. So when should I use them In which context For what purposes..
The Use of Multiple JFrames, Good/Bad Practice? http://stackoverflow.com/questions/9554636/the-use-of-multiple-jframes-good-bad-practice which displays images and plays sounds from a database. I'm trying to decide whether to use a separate JFrame to add.. whether to use a separate JFrame to add Images to the Database from the GUI. I'm just wondering whether it is good practice.. User unfriendly The user sees multiple icons in their task bar when expecting to see only one. Plus the side effects of..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array are virtually useless. Further Reading Branch_predictor . As hinted from above the culprit is this if statement if data c..
Why is Java Vector class considered obsolete or deprecated? http://stackoverflow.com/questions/1386275/why-is-java-vector-class-considered-obsolete-or-deprecated flawed approach to synchronization in most situations. As MrSpandex pointed out you can decorate a collection using the.. decoration approach gives cleaner separation of concerns. As for a Stack equivalent I'd look at Deque ArrayDeque to start..
Java web development, what skills do I need? [closed] http://stackoverflow.com/questions/1958808/java-web-development-what-skills-do-i-need like HTML CSS JS so I won't go in detail with that. As books I can recommend the X for Dummies series like HTML for..
What is the difference between JSF, Servlet and JSP? http://stackoverflow.com/questions/2095397/what-is-the-difference-between-jsf-servlet-and-jsp JSP and go for Facelets when you want to develop with JSF. As being a MVC Model View Controller framework JSF provides the..
How to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet upload you need a HTML input type file field in the form. As stated in the HTML specification you have to use the POST method..
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 type List but not of the parameterized type List Object . As a consequence you lose type safety if you use raw type like..
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android can either write your own or use something like kSOAP 2 . As you note others have been able to compile and use kSOAP2 in..
GUI not working after rewriting to MVC http://stackoverflow.com/questions/3066590/gui-not-working-after-rewriting-to-mvc e java mvc gui swing share improve this question As you've discovered the Model “View “Controller pattern is no panacea.. View without changing the nature of the Model . Addendum As @akf observes MVC hinges on the observer pattern . Your Model..
How do servlets work? Instantiation, session variables and multithreading http://stackoverflow.com/questions/3106452/how-do-servlets-work-instantiation-session-variables-and-multithreading as cookie name and the unique session ID as cookie value. As per the HTTP cookie specification a contract a decent webbrowser..
JSTL in JSF2 Facelets… makes sense? http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense Can I nest a composite component in itself recursively As to your concrete functional requirement if you want to render..
Design Patterns web based applications http://stackoverflow.com/questions/3541077/design-patterns-web-based-applications This is how among others JSF Wicket and Play works. As a side note I warmly recommend to pick an existing framework..
http://stackoverflow.com/questions/469695/decode-base64-data-in-java that Commons is the best way to go in general. EDIT 2 As amir75 points out below Java 6 ships with JAXB which contains..
Scanner issue when using nextLine after nextXXX http://stackoverflow.com/questions/7056749/scanner-issue-when-using-nextline-after-nextxxx Output Insert a number 55 Text1 Text2 Hi there As you can see the program skipped String text1 input.nextLine..
The Use of Multiple JFrames, Good/Bad Practice? http://stackoverflow.com/questions/9554636/the-use-of-multiple-jframes-good-bad-practice around the GUI or off it entirely according to user need. As mentioned above will minimize restore according to the parent.. will minimize restore according to the parent doing so. As items in a JList simple example below . As nodes in a JTree.. doing so. As items in a JList simple example below . As nodes in a JTree . Nested layouts . But if those strategies..
paintComponent does not work if its called by the recursive function? http://stackoverflow.com/questions/10338163/paintcomponent-does-not-work-if-its-called-by-the-recursive-function share improve this question SIMPLE EXPLANATION AS TO WHY YOU COULD ONLY SEE THE LAST UPDATE A quote taken from.. SIMPLE EXPLANATION AS TO WHY YOU COULD ONLY SEE THE LAST UPDATE A quote taken from Filthy Rich Clients by Chet Haase..
Java web development, what skills do I need? [closed] http://stackoverflow.com/questions/1958808/java-web-development-what-skills-do-i-need go EJB or JPA then you'd like to pick another e.g. JBoss AS EAP or GlassFish or TomEE . JBoss and TomEE uses Tomcat's core.. is pretty damn good this is supported by GlassFish 3 JBoss AS EAP 6 TomEE 1.x and partially only JSP Servlet Apache Tomcat.. the JSF dev homepage and place it in WEB INF lib . JBoss AS EAP GlassFish and TomEE as being a complete Java EE implementation..
http://stackoverflow.com/questions/1986998/resultset-to-pagination username job place FROM SELECT row_number OVER ORDER BY id AS row id username job place FROM contact AS temp WHERE row BETWEEN.. OVER ORDER BY id AS row id username job place FROM contact AS temp WHERE row BETWEEN d AND d public List Contact list int..
Analogues of Java and .NET technologies/frameworks http://stackoverflow.com/questions/2526024/analogues-of-java-and-net-technologies-frameworks Jython IronRuby ~ JRuby Java .NET EJB ~ MTS COM WebSphere AS GlassFish JBoss AS are all concrete Java EE API implementations... JRuby Java .NET EJB ~ MTS COM WebSphere AS GlassFish JBoss AS are all concrete Java EE API implementations. The .NET equivalent..
How do I import the javax.servlet API in my Eclipse project? http://stackoverflow.com/questions/4076601/how-do-i-import-the-javax-servlet-api-in-my-eclipse-project for example Apache Tomcat Oracle Glassfish JBoss AS etc. A servletcontainer is a concrete implementation of the.. Glassfish. Also note that for example Glassfish and JBoss AS are more than just a servletcontainer they also supports JSF..
http://stackoverflow.com/questions/4112686/how-to-use-servlets-and-ajax 3.0 compatible container Tomcat 7 Glassfish 3 JBoss AS 6 etc or newer then use the @WebServlet annotation on the class..
Configuring Spring Security 3.x to have multiple entry points http://stackoverflow.com/questions/4783063/configuring-spring-security-3-x-to-have-multiple-entry-points logs in with right credential they are allowed in... WORK AS EXPECTED . If employee logs in with wrong credential they are.. in with wrong credential they are not allowed in... WORK AS EXPECTED . If customer logs in with right credential they are.. logs in with right credential they are allowed in... WORK AS EXPECTED . If customer logs in with wrong credential the authentication..
Background timer task in JSP/Servlet web application http://stackoverflow.com/questions/5357033/background-timer-task-in-jsp-servlet-web-application detail depends on the container you're using. JBoss AS 5 for example ships with Quartz out the box. Or when you're.. on a Java EE 6 container which supports EJB 3.1 JBoss AS 6 GlassFish 3 but thus not Tomcat 7 easiest is to create a @Singleton..
http://stackoverflow.com/questions/5418292/jsf-2-0-file-upload you're using Servlet 3.0 container like Glassfish 3 JBoss AS 6 Tomcat 7 etc and the web.xml is declared as Servlet 3.0 then..
http://stackoverflow.com/questions/7295096/what-exactly-is-java-ee are the so called application servers like Glassfish JBoss AS WebLogic WebSphere etc. There are also servletcontainers which..
handling DATETIME values 0000-00-00 00:00:00 in JDBC http://stackoverflow.com/questions/782823/handling-datetime-values-0000-00-00-000000-in-jdbc not as an object. I got around this by doing SELECT CAST add_date AS CHAR as add_date which works but seems silly..... an object. I got around this by doing SELECT CAST add_date AS CHAR as add_date which works but seems silly... is there a better..
CSV parsing in Java - working example..? [closed] http://stackoverflow.com/questions/843997/csv-parsing-in-java-working-example as many code samples as possible by email. Thanks a lot AS java csv share improve this question You also have the..
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