Java
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Java – how can restful web services be better than soap based web services
I have experienced various websites, and the only answer they provide is – restful web services use HTTP's own methods…… -
How to wait for multiple nested asynchronous calls by using rxjava Android?
I'm new to RX Java. This is my situation, >Send request a and get the list < a > back > for each a, send r…… -
Java – add multiple jpprogressbars to the tablecolumn of JTable
I have added multiple jpprogressbars to the tablecolumn of JTable After some calculations, I'm updating all jpprogress…… -
Java – is there a way to expose hibernate entities as restful resources without dto?
I'm developing a simple webapp that exposes the domain model as a restful resource When grouping hibernate entities in…… -
Java – who calls the class initializer method and when?
I know that the new DUP, invocation and astere bytecode patterns will call the instance initialization method < ini…… -
Software testing tool – for Java
Can anyone list five software "software tests" in a java project? I need to learn 5. What do you recommend? Solution &…… -
Groovy equivalent of Java 8 lambda expression
I have only one method that has this java interface@ H_ 419_ 2@// Java Interface public interface AuditorAware { Audit…… -
What is the correct code pattern for completing transactions in Java (exception rollback and successful commit)?
I am looking for a common code pattern to correctly handle transactions that may be abnormal I assume that there is a …… -
Java – what happens when l (long) – = f (float)?
See English answers > floating point arithmetic not producing exact results 7 public class SimplePrint { public st…… -
Java: enumeration and if then else performance
I didn't have real luck. I used Google to get this concise answer rather than my time-consuming evaluation. I thought …… -
Java: look and feel
What happens when I use NetBeans on a Windows machine is that if I run the main java file, I get a different look than…… -
Java – how do I decide which bufferedimage image type to use?
The Java bufferedimage class has a long list of class variables called image types, which can be used as parameters of…… -
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 ……