包含标签：Java 的文章
-
Multithreading – you can cancel qfuture and report progress
The qfuture class has some methods, such as cancel(), progressvalue(), and so on These can be monitored by qfuturewatc…… -
Java – @ createdby how does it work in spring data JPA?
I used @ createddate on the entity attribute, and I saw it insert the date in dB I don't understand the purpose of @ c…… -
Java – constant warning when running Tomcat from IntelliJ
Suddenly, when I run Tomcat from inside IntelliJ, the output console is constantly bombarded by mail@ H_ 502_ 2 @ (ver…… -
Java asymmetric encryption: the preferred way to store public / private keys
This code generates a pair of public / private keys: KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA"); ke…… -
Java – JUnit test inheritance does not work
public abstract class GenericTests<T extends Number> { public abstract class GenericTests<T extends Number>…… -
Java – use the Apache httpcomponents client to sign AWS HTTP requests
I am trying to send an HTTP request to the AWS elasticsearch domain protected by Iam access policy I need to sign thes…… -
Java – inject null pointer
We try to refactor a project with Guice The idea is to bind all language interfaces to mixed objects such as French or…… -
Java – hibernate tutorial – where to place the mapping file?
I'm here to focus on Hibernate, an interesting tutorial: http://www.tutorialspoint.com/hibernate/hibernate_native_sql.…… -
Java methods that reference singleton objects at the same time
I have a question about multithreaded method calls in Java Suppose we have a singleton object whose class declaration …… -
Java – shorten method / variable names?
Whether using long is considered a bad style, but descriptive method names such as "adjacetlocationsbystate()" if so, …… -
Java – groovy version 2.4.0 for eclipse two
How to create a groovy project in eclipse and use a custom groovy library? I'm new to groovy and I'm confused about ho…… -
java – org. hibernate. Annotationexception: the referencedcolumnnames reference is not mapped to a single property
I encountered the following exception when mapping one-to-one between two entities The first entity embeds a composite…… -
Java – use selenium to handle pop ups
I have a situation where I click on the link page to open a pop-up window When the pop-up window is opened, the focus …… -
Java – instantiationexception calls a class on newinstance for simple reflection?
I have an abstract class A, which is public abstract class A { private final Object o; public A(Object o) { …… -
Java – string text, practice and reflection
I tried to find a third solution this question I don't understand why I don't print errors public class MyClass { …… -
Java – how to avoid using exception flow control?
I was assigned a project to develop a set of classes that act as interfaces to storage systems One requirement is that…… -
Priority queue using Multimap – Java
I must use Multimap to implement priority queue I use Multimap in Google collections Multimap<Integer,String> mu…… -
Java – how to use spaces in the parameters of Maven 2 exec plug-in
Related questions: Maven exec plugin not reading configuration In my configuration, I need a parameter, which is a fil…… -
Setopaque (true / false); Java
In Java 2D, when you use setopaque, I'm confused about some true and false For example, I know that swing opera means …… -
Java – interpreting type classes in Haskell
I am a C / Java programmer. The main example I use in daily programming is OOP In some threads, I read a comment that …… -
Java – split main and test in gradle’s eclipse build
Today, I tried to switch integration testing from Maven to gradle Everything is fine except that I have a serious prob…… -
How to make command-w close windows on Java or clojure’s Mac OS
I want to close a window / JFrame in the program I wrote in clojure How will this be achieved? Pure Java solutions are…… -
Java – implement clone () for immutable classes
I am developing a class library >I have an abstract base class of matrix, which provides the implementation of some…… -
Use JDBC realm to authenticate Shiro
I'm trying to use Shiro to verify the servlet running in Tomcat 6 I have the following Shiro INI file: [main] ps = org…… -
Dataoutputstream gives me a ‘Java io. IOException: unexpected end of stream ‘?
I'm trying to use httpurlconnection to send a request from an Android application to WebService But sometimes it works…… -
Java – comma separated string of currency values
I have a string that contains formatted currency values, such as 45890.00 and multiple values separated by commas, 890…… -
Multithreading – how to minimize the cost of allocating and initializing nsdateformatter?
I noticed that using nsdateformatter can be quite expensive I find that allocating and initializing objects has taken …… -
Java code for converting country code alpha-2 (in) to alpha 3 (ind)
Using Java, is there a quick way to convert alpha-2 country codes (in or GB) I can get alpha-2 Code: String[] codes = …… -
Is the Java – bouncy castle API thread safe?
Is bouncy castle API thread safe? especially, org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher org.bouncycas…… -
Java – real time collaboration in eclipse
See the English answer > is there an eclipse plugin for collaborative editing? [closed] 3 We have installed the lat…… -
Is java – WADL the standard for rest applications?
Is WADL a true standard like WSDL? I created a HelloWorld example in Jersey, and I got WADL from the URL Then I use "W…… -
Java – how to display the drop-down menu of a command after clicking the command icon?
In the eclipse RCP application, I have a custom view and provide a drop-down command in the toolbar of the view: <m……