Java
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How do I synchronize from two processes – atomic writes on one file?
I have two processes. Each process writes big data buffer. I want to control the synchronization of these processes to…… -
Java – when should I use inputstreamreader and outputstreamwriter?
From the Java Tutorial site, we know that inputstreamreader and outputstreamwriter can convert streams between bytes a…… -
Java – hibernate criteriabuilder connects multiple tables
I'm trying to add four tables using hibernate criteriabuilder @Entity public class BuildDetails { @Id private …… -
Java concurrency JDK 1.6: is busy waiting better than signaling? Valid Java #51
Item 51 of Joshua Bloch's "effective Java" does not depend on the thread scheduler, nor does it unnecessarily retain t…… -
Java – spring 5 – how to provide static resources
I'm trying to provide static resources in my web application. I've tried: @SuppressWarnings("deprecation") @Bean WebMv…… -
Java – property of type not found in JSF
I tried to invoke an attribute using primefaces in JSF. But I have the type managedbean Error 500 not found on persone…… -
Java – how to read BufferedReader two or more times?
I have a text file, one integer per line – 10 20 50 I want to read and print these numbers twice or more I tried some …… -
Java – optimistic locking and org hibernate. StaleObjectStateException：
I'm just trying to be optimistic I have the following courses: @Entity public class Student { private Integer id;…… -
Java – spring: how to get application context in webapp and standalone programs
I'm new to the spring framework We want to introduce it into the web application (3.1). At present, we use struts in t…… -
How can I find where bufferedimage uses alpha in Java?
I have a buffered image and a Boolean [] [] array It's like: for(int x = 0; x < width; x++) { for(int y = 0; y …… -
Java – is there any way to use secondarytable to jump multiple tables?
Suppose I have a main user table named userprofile and a display name I have various modules. You can use userprofile …… -
Java – sonar flag “bad practice”: if the class is extended, it may not be safe to use getresource in XYZ
Sonar pointed out this error in our java project Welcome any suggestions on safe programming! URL url = getClass().get…… -
Is the Java multicastsocket thread safe?
I have two themes It seems to work normally, but I still doubt it Can these two threads use the same multicast socket …… -
java. lang.NoSuchMethodError：javax. servlet. http. HttpServletRequest. startAsync
Do you know why I encountered this error at runtime? java.lang.NoSuchMethodError: javax.servlet.http.HttpServletReques…… -
Use classpathscanningandidatecomponentprovider with multiple jar files?
I am looking to use classpathscanningcandidatecomponentprovider to find subclasses of specific classes in my JVM What …… -
Use the start process and wait commands in PowerShell
I'm new to power shell. I don't have much programming background. I just try to use it for software packaging Anyway, …… -
Java – why get base class methods through reflection when subclasses override them?
I have super classes: class MyClass<T> { public void setValue(T value){ //insert code } public T getV…… -
Java allocated memory leak
I must assume that the following methods do not leak memory: public final void setData(final Integer p_iData) { da…… -
Java – hibernate bi directional many to many association creation duplication
My question is very similar to the hibernate bi directional manytomany updates with second level cache I have class, a…… -
Call mongodb function from Java
I'm trying to call stored JavaScript functions from the mongodb Java driver I have been following this guide to store …… -
Java – identify swing components on specific screen coordinates? (and manually schedule mouseevents)
I'm working on some Java applications that are compatible with alternative input devices Unfortunately, the device in …… -
Java – how to avoid instanceof when using list in design pattern
Imagine that you have a menu and each dish should be in multiple languages (French, English, Arabic...) The dish class…… -
Java – three questions about doing a lot of computing
This is just a series of questions about doing a lot of calculations Either I can't find the answer online, or I need …… -
Java – jar folder for eclipse project
I'm trying to create a centralized folder (some kind of "meta project" in my eclipse workspace) for common jar files t…… -
Java 64 bit JDK problem
If I compile some java files using the 64 bit JDK and then create a jar file from them, do the generated jars use the …… -
Java – a handler that does not add an HTTP header to an HTTP request when using the axis client API
I am using the axis API to access the axis HTTP server I use the following code to add a handler to the server The typ…… -
Java – confluence persistence
When writing your own macros, is there a simple built-in method to maintain data in confluence? This data needs to be …… -
Java – do I need my own server to use the stripe API?
I want to make payment in my application through stripe I'm reading their documentation and keep mentioning that I'll …… -
Which is more suitable for java development Hosting: aptana? Google App Engine？ Slice host?
I'm divided into the benefits of developing Java (non-commercial) web applications and deploying to aptana or Google c…… -
Java – primitive types and in generics Differences between
It may be asked somewhere, but I can't find it Please tell me the exact difference between the two: ArrayList list = n…… -
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Java – run the compiled jar file in Jenkins
I tried to run the executable jar file through Jenkins What I want to achieve here is that I create an executable jar ……