Recent Posts
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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 – 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 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…… -
What are the methods of drawing 3D trees using Java and OpenGL?
I know how to draw basic objects using jogl or lwjgl to connect to OpenGL What I want is something that can generate s…… -
Java – how to configure spring boot applications to continue using resteasy?
I have an old web application (pure servlet without spring) and I want to run it as fat jar Solution You can use reste…… -
Java – signal / slot mechanism
For people with relatively new Java ecosystems, is there a fairly lightweight way to perform the processing of their s…… -
Java – I can have the ArrayList string in the realm object Android
Since we don't have any list data types in the domain, how can we use ArrayList < string > to create objects in …… -
Fast and constant get () mapping with Java 7
When using the HashMap provided by Java 7, I encountered a problem, that is, get() evolved from O (1) to o (n), as des…… -
Java – cannot instantiate a type in a generic
I have this course public class Tree<T> { //List of branches for this tree private List<Tree<? su…… -
Java – create a runnable jar that contains external files
I want to build a running jar. Jar in Java I need to include some files in the jar so that when I execute the jar, the…… -
Java – create volley requests in different threads
I want to use the volley Library in different threads for requests This means that there is a connection in the data p…… -
Java – unable to publish ear to WebSphere
I am running rational application developer for WebSphere software (v.8.0.4.1) on windows I have an ear project and I …… -
Follow up: there are no enumerated instance controls in Java
This is a follow-up to this question Is this solution waterproof? public final class Thing implements Serializable { …… -
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 …… -
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…… -
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…… -
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 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…… -
Java – is there a simple and safe way to convert a printwriter to a printstream?
Is there a simple way to use Java io. The instance of printwriter is converted to Java io. PrintStream？ Solution Firs…… -
Java 8 – zoneddatetime is not equal to another zoneddatetime
I created two zoneddatetime objects, which I think should be the same: public static void main(String[] args) { Zo…… -
Suggestions for finding end-to-end Java CPU profilers [closed]
What good end-to-end CPU analyzers exist in Java? Quick list I'm looking for: >Offline analysis – no user interacti…… -
How to protect methods in Java (overflow, etc.)
I have to write a "watchdog" in Java to ensure that threads do not take long to execute There is no problem with objec…… -
Java – missing preview tab in birt layout
A new version of birt 4.0 has just been installed in eclipse x. The preview tab was not found in the layout window Sol…… -
Java – how to run methods asynchronously using spring?
The following code assumes asynchronous work, but waits for the async part to complete and then continues How do I mak…… -
Java EE – how to instantiate multiple CDI / weld beans for a class?
In spring, you can instantiate any class by defining the corresponding bean in XML conf You can also instantiate multi…… -
Java – resolve “duplicate definition of library class” in Proguard
I have a java project that contains the Xerces library When I process a project with Proguard, I receive a warning: No…… -
java – OpenCV 2.4. 1：UnsatisfiedLinkError
I have an Android project with native code In this native section, I use OpenCV It compiles without any errors, but wh…… -
Consider storing serialized Java objects as Cassandra as JSON What is catch?
I'm using Cassandra 1.2 2. I find it easy to use Jackson to map my objects and store JSON and Java in the database I'm…… -
Java object serialization – thread safe?
I am writing a highly concurrent application that extensively modifies MyClass objects The course consists of several …… -
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 allocated memory leak
I must assume that the following methods do not leak memory: public final void setData(final Integer p_iData) { da……