Java
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Pop up and start JPA2 hibernate – enable L2 cache
I use spring boot 1.2 5 and JPA 2 annotation entities (and Hibernate as the underlying JPA Implementation) I want to u…… -
How to display images in Java applications
I want to display an image in my java application I found a code that downloads images from web server and displays th…… -
Java immutable classes are much slower
I need some complex math libraries, so I hesitate to use immutable complex libraries and variable complex libraries Ob…… -
Java – empty array is an empty list
Arrays. Aslist (E [] e) returns the view of the array as a list, but it throws a NullPointerException when the array i…… -
Java – templates in spring MVC web applications
I have many common areas in my web application design, such as footnote, title, sidebar, block... And change some thin…… -
Java – example implementation of httpservletrequestwrapper, setreadlistener / isfinished / isready?
I try to adjust an httpservletrequestwrapper (see how to read InputStream multiple times) so that the HTTP post body c…… -
Java – what is digital promotion?
Can anyone tell me what digital promotion is? Solution Number promotion is to convert a smaller number type to a large…… -
Java – how do I retrieve the size of a file from a URL download (using an HTTP connection)?
I am using a project to download files using an HTTP connection I display a horizontal progress bar with progress bar …… -
Java – soap WS – make @ webparam optional
I have a very simple method. I use jax-ws annotation in WS API: @WebMethod public MyResponse sendSingle2( @WebPara…… -
Java – @ AspectJ cuts into all methods in the package
I have this working code for a specific package, but I want to configure it for all controllers, services and Dao pack…… -
Java – spring boot: persistence cannot be used
I've entered this stage, and - although I'm learning a lot - I'm starting to despair I've tried all the suggestions on…… -
Prepared declarations collected in the in clause of the datastex Cassandra CQL driver
I am trying to run the following query SELECT edge_id,b_id FROM booking_by_edge WHERE edge_id IN ? I bind Long's Java …… -
Why does the same code work differently in Java?
I wrote the following code in Java and C, but the output of these programs is different Can you describe it This is ja…… -
Libgdx collision detection with tiledmap
I'm trying to implement a collision detection system by tiling maps I have a 2D Pokemon style game with a tiled map Sp…… -
Java – custom string class creation
I tried to use Java. Net in my eclipse workspace Lang package to create a custom class string Now I'm confused 1) why …… -
Java – dagger 2
Using dagger 2, I tried to inject singleton objects at multiple locations within a single range However, it seems that…… -
Java – how to deal with underflow in scientific computing?
I'm studying probabilistic models. When reasoning about these models, the estimated probability may become very small …… -
Java – after reasoning, l must be specified as long, F and D as float and double
Here are a few related questions According to the title, why should you specify the variable type as long or float, do…… -
How to avoid sending Java requests from the Java Web server to itself?
The reality is that the Java Web server (Weblogic) receives requests from users and must send a zip archive in respons…… -
Java — debug the annotation processor in Eclipse
I'm writing a simple annotation processor and trying to debug using eclipse I created a new project for annotation pro…… -
Java – parses the contents of an XML file without knowing the XML file structure
I have been using java to learn some new techniques to parse files, and I have been working hard on the part of msot H…… -
Java – how to build dynamic URLs in spring MVC
I tried to send a URL that I would generate based on some dynamic values But I don't want to hard code it, nor do I wa…… -
Java statistics package [closed]
I'm searching for Java modules. I can run various statistical tests in my program So far, I've found http://commons.ap…… -
Java direct memory: using sun. Com in custom classes misc. Cleaner
In Java, the memory allocated by NiO direct buffer is the same as sun misc. Cleaner instances are released together, a…… -
Are Java bytes the same as c# bytes?
If the input parameter is an array of byte byte [], the native method in DLL will run in Java Is that because byte [] …… -
If so, what is the relationship between enum and enumeration
I want to know if the formal connection between enumeration interface and enum construct in Java is what? Solution No,…… -
Escaping JavaScript strings in Java
I need to turn it into a string in Java: <script type="text/javascript">document.write("<img src=\"UpArrow.pn…… -
Java – is there a simple way to concatenate several lines of text into a string without constantly adding line breaks?
So I basically need to do this: String text = "line1\n"; text += "line2\n"; text += "line3\n"; useString( text ); Ther…… -
Java – dependency injection EJB 3 – too many choices?
We are starting a new project based on EJB 3.0 I have a "spring" background (and love it), so loose coupling and testa…… -
How to use the button group swing control in Java?
How do I add radio buttons to a button group using NetBeans? Once they are added, how do I select radio buttons from t…… -
Java – Disable word wrapping in jtextpane
I can't find a simple way to close the word wrapping in jtextpane I can't use jtextarea because I need different color…… -
Java – too many open files (selenium phantom jsdriver)
In my embedded selenium / phantom JS driver, it seems that resources have not been cleaned up Running the client synch……