Java
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In Java, why is the new operator not used to allocate memory before the data type?
If we need the new operator to allocate memory for objects, why don't we use it class-name class-var = new class-name…… -
Java – negating unary operators in Hibernate QL
I'm trying to HQL switch Boolean fields using: update Entity e set e.booleanField = not e.booleanField where e.id = ?1…… -
Live screen sharing to Java application (localhost)
I'm looking for a way to add overlays to running Windows games, such as OBS (game streaming application for twitch) Al…… -
java. sql. How timestamp stores nanoseconds
java. sql. The timestamp constructor is as follows: public Timestamp(long time) { super((time/1000)*1000); nan…… -
Java：Math. 32-bit FP implementation of sqrt()
Standard math Sqrt () method seems to be quite fast in Java, but it has an inherent disadvantage that it always involv…… -
Java – how to read Class file?
See the English answer > How can I open Java class files in a human-readable way? 17 Solution To read this, you nee…… -
Java – jsf2: injecting service objects into service beans from spring?
I have tested this and tried to inject the service object into @ managedbean, but it failed NullPointerException becau…… -
Java independent variable vs array performance
I'm playing Java and want to know how different the following are in performance I know that premature optimization is…… -
Java – context hierarchy in spring boot based testing
My spring boot application starts as follows: new SpringApplicationBuilder() .sources(ParentCtxConfig.class) .chil…… -
java. time. ZonedDateTime. Parse and iso8601?
Why does the jdk8 datetime library seem unable to resolve valid iso8601 datetime strings? Its time zone offset is expr…… -
Java library for Java to EDI conversion
I am looking for a Java library for EDI conversion – Who knows of other solutions that might be useful? I am also open…… -
How to use java to know the original size (width and height) of SWF file?
Is there any way to know the original width and height of SWF file in Java? int width,height; // my stream contains a…… -
AspectJ: pointcut for lambda expressions
I have a Java 6 project that is migrating to Java 8 We use AspectJ to record some user actions, such as button clicks …… -
Is there an open source Java library connected to the image scanner?
I want to make a tool to capture images from the scanner. Is there an open source Java library to control / interface …… -
JavaFX video cannot be played
I followed some tutorials on playing video by combining JavaFX with swing (JFrame), but all I got was a black screen, …… -
Java – enables gson to deserialize numbers to integers or doubles
I'm sorry for gson I have a simple JSON. I want to deserialize it into map < string, Object > I'm really intuiti…… -
Java – jsup clean method
I'm trying to use this code to completely clear my text from HTML elements: Jsoup.clean(preparedText,Whitelist.none())…… -
Copy two 2D arrays to another 2D array
I have another Java question:) I've read the this thread and it clearly explains it, but I have two 2D arrays I want t…… -
Java – use socket to send ArrayList from server to client through TCP?
I'm trying to send an object from a server socket to a client socket over TCP I can't find the problem This is the err…… -
Java – use spring data rest to expose hypermedia links on collections, even if they are empty
First, I read the previous question: exposing link on collection entity in spring data rest But the problem still exis…… -
Generic class parameters in Java
So I pass activities and intentions in my Android application to handle threads (I'm sure there's a better example bec…… -
java – org. testng. Testngexception encountered while trying to access poolinghttpclientconnectionmanager
So I recently faced testngexception when trying to run an existing test suite using the IDE Recently I mean updating I…… -
Java – resource free method when using jax-rs on tomee
Using inventory tomee, I can't get simple Jax - RS resources I keep getting a mistake: Jun 30,2012 5:09:59 PM org.apac…… -
Java – unable to find spring namespacehandler for XML schema namespace[ http://www.springframework.org/schema/data/jpa ]
Any idea, what might cause this error? This is my 'servlet context XML '(there are some problems with indentation, but…… -
Can JavaFX filechooser “remember” the last directory it opened?
My view controller has a filechooser instance for opening and saving files Every time I call showopendialog () or show…… -
Jsf-2 – @ predestroy is not called after the session expires
This is in was8 JSF 2 application running on 0 This is the code of a page's "support" bean @Named("mySessionBean") …… -
Java – embedded jetty – spring MVC – view Parser – no XML – HTTP error: 404
I'm trying to build a simple spring MVC server using embedded jetty I've set up the server, enabled spring, and set up…… -
Java – compile Maven project
I have an ongoing Maven project. I make sure there are no errors. When I try to compile and deploy "MVN clean compile …… -
What is the best implementation of Boolean in MySQL using java to connect to the database?
I currently have a MySQL database setup, java client access and use database I need to use Boolean data types in the d…… -
Java – is there a generic Maven code generator?
I am currently developing a project that uses strong code generation for various purposes A generator generates SQL sc…… -
java – JSF 2.0. Failed to get post parameters and cookies in prerenderview event handler
I'm trying to develop a service The key is my index XHTML should get parameters (post and get) and cookies from HTTP r…… -
Java – RSA key pairs are generated and stored in the keystore
I try to generate an RSA key pair and store it in the HSM keystore My current code is as follows: String configName = ……