Java
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Java – should the entitymanager of JPA be requestscoped?
I am using JBoss 7 to develop web applications based on Java EE 6 class ForumServiceEJB { @PersistenceContext(type…… -
Exception in thread “main” Java Lang. NoClassDefFoundError: mainly in eclipse on OSX 10.6
When I tried to run a simple hello world application in eclipse, I got Exception in thread "main" java.lang.NoClassDef…… -
How do I get all child threads from a thread in Java?
I'm developing a framework that allows customers to write their own code in Java And this framework invokes its code i…… -
Java – publishing data using a web client
I'm using the web client to create a submit button, but it doesn't work This is the code I'm using: HtmlElement button…… -
Java – find and replace elements in a linked list
I need to be able to search for some unique elements (user name, password, email) in the link list. After finding thes…… -
Multiple windows on Java Web projects
I have an EJB 2.1 project (in fact, it must be migrated to EJB 3.1: -). At present, it only supports one window This m…… -
Java – distinct inner connection HQL
I have the following hibernate entities public class Container { ... @OneToMany private List<ACLEntry> ac…… -
Java – what is the best way to send an image from an Android device to a server for processing and sending the results back?
What kind of server-side image processing is convenient to implement? In addition, if I install matlab on the server, …… -
Java – using dialogs in fragments
In my application, I have an activity and several fragments (activity as controller and fragments – as view) In some c…… -
java – NullPointerException：Collections. binarySearch(List <？extends T>,T,Comparator <？super T>)line：not available
Print this stack error "collections. Binarysearch (list , t, comparator ) line: not available" int index = Collections…… -
Java – Android service activity 2 mode communication
In my team's Android application, I have a service running from startup. It communicates with the server to perform op…… -
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Java – cannot add the same panel again
It drives me crazy When you click three different buttons, I'm trying to change the panel, but it applies to one panel…… -
Java – generated web service client class without setter
I have created a client for the soap web service, but in the generated code, some classes miss the setter method The W…… -
Java – is there a utility or API to convert SMS shorthand abbreviations into correct sentences?
I'm creating an Android application that will convert SMS text messages through the TTS API This works when the text i…… -
Java – extract the image into a blobstore
In my application, I need to do the following: I successfully uploaded, decompressed and saved the file @ blobstore, b…… -
Java – what is a cached string?
What is a cached string? Or what is string caching? I've read this term many times at JNI, but I don't know what it is…… -
Java – Weka vs mahout recommendation engine
I look forward to proposing a collaborative filtering solution I am very satisfied with Java and found that Weka or ma…… -
Java – can I use parameter injection methods in spring?
From docs: <public|protected> [abstract] <return-type> theMethodName(no-arguments); Is there a solution to…… -
Java – how to merge grid cells in GXT
I wonder if I can merge cells in the GXT grid like this: I think I have to overwrite the renderer, but I can't find on…… -
Requires Solaris and Java continuous memory clarification
Background: We have a vendor - supplied Java application that has a somewhat large Java heap There is not much informa…… -
How to solve javax. On heroku net. ssl. SSLHandshakeException？
I encountered sslhandshakeexception on heroku This application is not an SSL application But the application calls an …… -
What is the appropriate way to create objects with one to many relationships using objectify and requestfactory?
What is the appropriate way to create objects with one to many relationships using objectify and requestfactory? I've …… -
Java – use dto or value object patterns to calculate deferred load exceptions
It's just an architectural problem in the Java / Hibernate / spring / MySQL stack Should I use opensessioninview patte…… -
Java – stop the full screen window to minimize joptionpane showMessageDialog？
code private MainApp() /* Extends JFrame */{ DisplayMode displayMode = new DisplayMode(800,600,16,75); ScreenM…… -
Multimedia playing in Java
I need to play multimedia files in Java I have studied JMF and FMJ, but these have not been updated for several years …… -
Java – Custom log4j scrolling appender
My class code is as follows public class LogLevelFilterFileAppender extends FileAppender implements Cloneable{ pr…… -
What concurrency warnings should I get from findbugs?
I have the following code: import net.jcip.annotations.GuardedBy; import net.jcip.annotations.ThreadSafe; @ThreadSafe…… -
Java – Jena TDB: nested transactions
I want to rewrite the code that currently uses transactions However, according to Jena's documentation（ http://incuba…… -
Java – Generic runtime check for ‘instanceof’
I have an object named node < value > The objects nodeinternal < value > and nodelef < value > inher…… -
Java – efficiency based on regular expression substitution
Which of the following is more effective and useful? value.replaceAll("['‘’`]","") value.replaceAll("['‘’`]+","") My ……