包含标签：Java 的文章
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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…… -
Superscript in Java string
Does Java string support superscripts in strings? If so, then how to use it, I have searched web pages and APIs, but I…… -
java – EntityManager. Merge didn’t do anything
I have a user entity: @Entity @Table( name = "bi_user" ) @SequenceGenerator( name = "USER_SEQ_GEN",sequenceName = "USE…… -
Java – parsing relative paths when loading XSLT files
I need to use Apache FOP for XSL transformation. I have the following code: //Setup FOP Fop fop = fopFactory.newFop(Mi…… -
Java – inheritance in static methods
Why does the following code print "master"? public class Main { public static void method() { System.o…… -
Java – what is Class means a class name
. What does class mean, for example, MyClass class？ I understand that when you place the name of a class and the poin…… -
Java – how to verify the use of Guice scope in testing?
I have some tests. If some Guice ranges are used incorrectly, I want to fail For example, @ singleton should not have …… -
Java – what XML data types should be used for money / money?
After reading a few questions about Java data types for money / currency, I decided to use the int / long method to st…… -
Java – retrieves the size of the image in the file system
How to use @ L_ 301_ The size of the image retrieved from the local file system of 0 @ (usually JPEG, PNG, JPG and GIF…… -
Java – lsserializer vs transformer serializes XML to string
I have to put org w3c. dom. Convert document to Java lang.String. I found two possible ways. One is to use org w3c. do…… -
Java – JTree rendering and jcheckbox node
I'm trying to modify the standard swing JTree to mix nodes with and without checkboxes Here is an example: When I try …… -
Java – logback is used, but log4j starts displaying warn no Appenders
I'm using logback for logging, but it's working all the time; One day I began to warn Log4j: warn did not find the app…… -
Inkscape plug-in to edit SVG code in real time
I'm looking for a plug-in for Inkscape (or any vector based editor) to view the code window next to the window with SV…… -
Java 8 date is equivalent to joda’s datetimeformatterbuilder, which has multiple parser formats?
I currently have a joda date parser that uses datetimeformatterbuilder and can receive six different date formats I'm …… -
The best learning algorithm for making decision tree in Java?
I have a data set that contains information such as age, city, child age, and results (confirmed, accepted) To help wi…… -
Java – jtidy beautiful print custom HTML tags
I try to use jtidy to print well formed HTML generated by users: <div class="component-holder ng-binding ng-scope u……