包含标签：Java 的文章
-
Automatic boxing should be avoided in Java
I'd like to ask if automatic boxing should be avoided in Java Because some methods need a primitive type "double", but…… -
Java – the best way to copy from one array to another
When I run the following code, there is no copy - what did I do wrong? In addition, is this the best / most effective …… -
jdbc – JT400. Jar disable login screen
Can someone help me? I have a small utility that uses jt400-6.7 Jar to the AS400 server Refer to the following code pr…… -
High end 2D Java (SE) graphics library [closed]
I am looking for a high-end graphics library for Java Standard Edition I know some fairly low-level libraries: AWT / s…… -
Java has about 100 parallel threads and memory management
I am writing an optimization algorithm to create about 100 threads At present, I start them once (for loop), and then …… -
Java – why Maven war plugin failed web XML fails if I configure it without failing in the missing web xml？
This is a challenge: Why did this build fail? I have configured Maven's Maven war plugin, which will not be in a missi…… -
Java – PGP data encryption for yubico OpenPGP smart card
I try to implement PGP encryption in Java applications based on yubikey Neo OpenPGP smart card applet It seems to be a…… -
Java – how to access method properties using spring AOP (AspectJ style)?
I need to accept some methods and their properties by using annotations as pointcuts, but how do I access them I have …… -
Java – find or insert based on Hibernate’s unique key
I'm trying to write a method that will return a hibernate object based on a unique but non - primary key If the entity…… -
The mysterious veil of Java EE 6 annotation inheritance
I use EJB inheritance in several schemes, and sometimes use annotations in superclasses, such as this general entityda…… -
Java – get the instance name of the websphere application server
My web service will run on JBoss app server or websphere application server For both of them, I need to know the insta…… -
Java / scala BigInteger paste
I have a problem with the Java BigInteger class: I can't paste a large value into BigInteger For example, suppose I wa…… -
Java – PGP data encryption for yubico OpenPGP smart card
I try to implement PGP encryption in Java applications based on yubikey Neo OpenPGP smart card applet It seems to be a…… -
What is a good tool for investigating the use of database connections in Java?
What is a good tool for investigating the use of database connections in Java? Developers are supporting a complex Jav…… -
Java – how to map the root directory of URL schema directory in servlet mapping in spring MVC?
<servlet-mapping> <servlet-mapping> <servlet-name>testServlet</servlet-name> <url-p…… -
Java & rabbitmq – queuing and multithreading – or couchbase as a job queue
I have a job distributor that publishes news on different channels In addition, I want two (and later) consumers to wo…… -
Array – use ‘iterator’ instead of ‘VEC’ as much as possible?
Is it considered a good style to accept iterator T when a function takes a series of values as parameters Not VEC t In…… -
Algorithm for filtering / standardizing bad signals
Use GPS to process tracking applications What algorithm should I run to filter out bad signals? It looks like an appli…… -
Multithreading – issue a QT signal from a non QT thread or issue a QT main event loop at 4.5
I call an emit signal1 () from a non QT thread It is just a pthread (pthread_create()), which calls a signaled QObject…… -
Java – retrofitting with firebase
Ask anyone for help This is my API method @POST("/user/new.json") Call createUser(@Body User user); This is my phone i…… -
Java – how to properly end eclipse startup configuration execution?
I am writing an eclipse plug - in that provides a new startup configuration type It can be expected that when the exec…… -
The equivalent of the C shift operator in Java?
C shift operator < do not loop, for example, if you do this: // C++ int a = 1; cout << (a<<38); You get…… -
Java – PMD for inferring arrayisredreddirectly direct rules
PMD has a rule named arrayisstoreddirectly in the sun security rule set: This is their example: public class Foo { pr…… -
Java – tzupdater and tzdata2016g publishing failed
TZUpdater 2.1. 0 failed to publish on tzdata2016g For Java 8, it failed, "source directory does not contain file: vers…… -
Java – map
How to convert map < object, Object > mapping < string, string > in the cleanest way? Is there a way not t…… -
Transparent background in WebView in JavaFX
I need to display my web view content on my parents' background image Is there a direct way? Solution WebView transpar…… -
Java – optionalint vs optional
When scrolling Java I was surprised to find that the optional < T > and optionalint have nothing to do with each…… -
Java – selenium 3.0 firefx driver failed with org openqa. selenium. Sessionnotcreatedexception failed to create a new remote session
Selenium 3.0 firefx driver via org openqa. selenium. Sessionnotcreatedexception failed: unable to create a new remote …… -
Java – in addition to a servlet, it also filters the mapping of all content for struts 2?
I have a struts 2 (2.1.8.1) web application My web XML looks like, <filter> <filter-name>struts2</f…… -
Java – obfuscate initialization of instance variables
I was taking the scjp test and did some simulation tests. I met this one: It asks what is the output of: class TestCla…… -
Java – trove library threadsafe?
Is GNU trove library thread safe I'm interested in tobjectdoublehashmap I read their documentation but didn't mention …… -
Java – long timeout in the while loop?
I've read that you should put object in a Java loop Wait() call The reason is that this thread may be awakened, and th……