Recent Posts
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Java – AWS S3 – lists all objects in folders without prefixes
I encountered a problem retrieving all objects (file names) in folders in AWS S3 This is my code: ListObjectsRequest l…… -
Java – how to get publickey object from EC public key byte?
I am developing an application. I need to verify sha256withecdsasignatures with the help of secp256r1 (NIST p-256, p-2…… -
Java – how do I load the camel attribute into a bean?
I've been reading the following pages about camel properties: http://camel.apache.org/using-propertyplaceholder.html I…… -
Can “void” be considered a primitive type in Java?
I noticed the solar eclipse JDT uses void as a primitive type Can this be considered correct? Solution I found that in…… -
Java – invalid spring 3 validation
There is a user entity in my application that needs to be verified public class User { private String userName; priva…… -
Java – why should the resttemplate get response be XML in JSON?
I used resttemplate (org. Springframework. Web. Client. Resttemplate) to struggle with an additional spring behavior w…… -
Java – mockito – “wanted but not called; but there are other interaction errors with this simulation”
I verified that a function was called using mockito, but mockito told me that the function I was verifying had never b…… -
How to prevent method overload in Java?
You can prevent overriding methods by using the keyword final. Similarly, how to prevent overloading? Solution You can…… -
Java – git process: how to configure the one click release process in Jenkins?
We use the standard git stream branching model (development, master, release, patch, etc.) As part of our workflow, we…… -
Java – querydsl – subquery in set expression
I use spring data JPA and querydsl (3.2.3) My simplified model is as follows: @Entity public class Invoice { @Many…… -
Java – the response of a web service using Apache CXF displays “unbound operation information..”
The problem description may be long Please be patient and provide any help, because I am a new network service What I …… -
Validate certificates for Java certificate store via cli
How do I validate x509 (or der format) certificates on the Java certificate store from the command line? I've studied …… -
Java – programmatically check whether there is enough memory on the SD card
My application is saving the file on the SD card, but before saving the file, I need to check whether there is free me…… -
Java – override server connector configuration with env variable with dropwizard
I have posted this question on the DW mailing list, but I have no answer I can assume that the following YML format is…… -
Java – videoview ontouch event: pause / resume video and show / hide mediacontroller and actionbar
Problem summary: 1) How do I pause the video first instead of playing it now? 2) How to pause / UN pause video touch, …… -
Java – add JfreeChart to JPanel
If I have a my JPanel and a my JfreeChart How do I add this chart to JPanel? XYSeries series = new XYSeries("XYGraph")…… -
Java – why is HashMap faster than HashSet?
I've been reading / searching why HashMap is faster than HashSet I am not familiar with the following statement >Ha…… -
How do I use regular expressions to get a second matcher in Java?
See English answers > match at every second occurrence VA-123456-124_VRG.tif I tried this: Pattern mpattern = Patte…… -
Use sun misc. Unsafe get the address of the Java array item?
I'm trying to understand Sun misc. Unsafe's document - I think no one really bothers to make it readable because it's …… -
Haskell – specify the GHC option on the command line through cabal (cabal install) without editing the package Cabal file
When I install vectors with: cabal install vector I got a lot of specconstr restriction warnings. If I can specify - f…… -
Handling large datasets in Java / clojure: Littlebig data
I've been using clojure for graphics / data processing applications (you can see a screenshot here) (although usually,…… -
Does the Javadoc tool recognize comments in methods?
I wrote a lot of comments in my business logic: /** * Do some important stuff. * @param pDog * @param pAllDogTraini…… -
Design – what makes Erlang suitable for soft real-time applications?
Some background I am working on building a programming language for digital media programming. It should support non s…… -
Java – how do I use enumerations in getters and setters?
So what I want to do is this: Write a user class A user: >There is a user name, such as' fj3 '> there is a UserT……