Java
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Java – how to build and run birt source code in eclipse Mars
I can get birt source (4.2.2 branch) from here: https://github.com/eclipse/birt/ Use M2e (Maven integration of eclipse…… -
Obtain the IPv4 address of Ethernet adapter in windows using java 1.5
problem My windows system has multiple Ethernet adapters Given the name of the Ethernet adapter, I need to find its IP…… -
Java – search for data in Web sites
I'm new to Java and have some problems The main idea is to connect to a website and collect information from it and st…… -
. Net – optimistic concurrent remove method of concurrent dictionary
I look for a method in the concurrentdictionary that allows me to press the key to delete an entry. If and only if the…… -
How to pass JSON and file to rest API in Java?
My main question is how to pass JSON and file to send the request to the rest API? What does the spring framework need…… -
Java – transfer privatekey from keystore and use JNI in OpenSSL
I have an Android application using webrtc Everything is perfect But now, the main problem is encryption In order to m…… -
Java thread start time
Can I retrieve the start time of a given java thread in the JVM? I have a thread dump. I'm looking at some problematic…… -
An effective way to pass JSON between Java and JavaScript
I'm new to nashorn and write scripts on the JVM, and wonder if I can make my java code communicate with JavaScript mor…… -
In Java, should I create a new package, folder or source folder?
There are a few questions about so, but I'm completely unfamiliar with java development. I don't know the correct meth…… -
Add a custom jmod to the module path using java 9
I used this jmod tool to create a simple jmod file $JAVA_HOME/bin/jmod create --class-path classes test/samples.jmod N…… -
Java – strange behavior when downloading HTML using httpurlconnection
In my android Wikipedia reader application, I'm using httpurlconnection to download the HTML of the article. Some user…… -
If may is complete, convert may to single from another source
I want to build a repository class that returns single < something > This class should first check the cache, wh…… -
Java – JNA memory leak
In view of this, C code: void LoadData(char** myVar) { std:: string str("[Really Long String Here]"); unsigned…… -
Java – Apache spark lambda expression – serialization problem
I tried to use a lambda expression in the spark task and threw a "Java. Lang. illegalargumentexception: invalid lambda…… -
java. security. AccessControlException：access denied(“java.lang.RuntimePermission”“accessClassInPackage.sun.reflect.annotation”)Spring
I use Google application engine and spring security to create a simple spring MVC application When I run my applicatio…… -
Java – sqlitedatabase ‘does not implement interface’
This error occurs when sqlitedatabase is used as closeable I have a sample project to recreate it: https://github.com/…… -
Should the Java – domain model mapper be static?
In many projects I participate in, we often have many classes to map content from one domain model to another For exam…… -
Java – use JAXB to ungroup XML into existing objects
I have an XSD generated from a set of existing Java classes. At present, it successfully ungroups XML messages into ob…… -
Debugging – what are the negative consequences of shutting down the debug heap? (_NO_DEBUG_HEAP == 1)
The initial stage of my program loads a large amount of data into the STL container I found it would take a few minute…… -
Java – how do I set a URL that contains the thymeleaf & symbol?
I have something similar: Locale defaultLocale = Locale.getDefault(); final Context ctx = new Context(defaultLocale); …… -
Java – what is the purpose of using local variables to hold global variables?
I looked at string Hashcode () method source code This is the implementation of 6-b14 and has changed public int hashC…… -
Java – why is my quicksort performance worse than my mergeport?
Did I miss anything? The source is short and can be run and commented at any time for better understanding I need to k…… -
Is it useful to use multithreading to process files on your hard drive?
In terms of performance and execution speed, is it useful to use multithreading to process files on hard drives? (move…… -
How to run my Haskell function in Java
Suppose I'm in math Haskell function added to HS How to run the add function through a java program and store the outp…… -
Can Java – Apache storm sprouts communicate with each other?
I have a directory and another process imports files Our current storm implementation reads this directory, selects th…… -
OAuth – what are the main differences between socialauth, scribe Java and spring social?
I'm new to OAuth, but I want to find a good way to start and use a widely supported library Here are the pros and cons…… -
Java – focus on snippets
I'm looking at an open source project on GitHub. I found the following code line in Java, static byte[] byteArray = ne…… -
RX Java – groupby operator, items from different groups are interleaved
The following codes: Observable .just(0,1,2,3,4,5,6,7,8,9) .doOnNext(item -> System.out.pri…… -
Java – Protocol buffer: enumeration problem
I have the following Proto file: enum Enum1{ X=0; Y=1; } message SomeClass{ required Enum1 enum1=1; …… -
JPA – correct join in jpql
I have the following JPA entities: @Entity class UserClient{ @Id @GeneratedValue(strategy = GenerationType.AUT…… -
Java – Apache POI docx – how to set the page size?
Does anyone know how to change the page size (from letter to A4) for X wpfdocument (docx)? I can't find any printsetup…… -
Java – convert simpledateformat to datetimeformatter
Therefore, when trying to replace some legacy code with simpledateformat and date, use Java time. Datetimeformatter an……