包含标签:Java 的文章
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Java – is the constructor not a member of a class?
Constructor is not a member of class? If so, why not inherit? JLS 7.0 says that constructors are not members, so they …… -
Ultra lightweight Java persistence layer needs
I need a super lightweight persistence layer for the Java application I'm writing I need it to become a stand-alone ap…… -
Java – how does method parsing and invocation work inside Python?
How do method calls work in Python? Indeed, python method parsing in Python may be slower than Java What is late bindi…… -
Calling Java functions from clojure
I can use (. Touppercase "good") because "good" is a Java string that has a touppercase method I can also use (Java. I…… -
Java – PostgreSQL error: undeclared due to user request
What causes this error in PostgreSQL? org.postgresql.util.PsqlException: ERROR: canceling statement due to user reques…… -
Java – detect mouse movement on the screen
I created a mousemotiondetection class, which just detects whether the user has moved the mouse anywhere on the screen…… -
. Net – complex query of ORM (especially NHibernate) performance
Our company is rewriting the existing application from scratch This application and other tasks perform complex SQL qu…… -
Java – IntelliJ: search the project for the source of Maven dependencies
Can I search some text through the source code of all Maven dependencies of the project? For example, if you import th…… -
How to use generics in Java to reference nested types?
How do I create generic classes that reference nested generic types? I'm trying to create a comparator class that can …… -
Java – why not use the element zero of the heap array?
This is the beginning of my rough sketch of a heap with arbitrary values 0 1 2 3 4 5 6 7 8 9…… -
Java – why choose JMS for asynchronous resolution? Why is it better than a simple entity bean?
In most of the projects I participated in, the choice of asynchronous solution has always been the source of a lot of …… -
Java – get threads waiting indefinitely
I have a java thread to handle outgoing communication with the socket I just want the thread to run, and the pending o…… -
Java – why does type promotion take precedence over varargs of overloaded methods
public class Test public class Test { public static void printValue(int i,int j,int k) { System.out.pr…… -
Is the Java virtual machine language agnostic?
To be sure, the Java virtual machine was originally designed for the Java programming language, but now other develope…… -
Java – use the console to read system. Java for IntelliJ in
I need to open the console and use IntelliJ to enter my homework Is there any way to do this? My code is as follows: p…… -
java – org. hibernate. Persistent objectexception: passing detached entities to persistence – using JPA
I'm creating a simple application that just inserts a row into the table (if the table doesn't exist, create it) using…… -
Java – final static method test
I've been studying for my software development course and got this problem from the example: "Why do you have both sta…… -
Java – a simple GUI toolkit for clojure
The length of this problem is which GUI toolkit creates a very simple UI and is easy to use clojure? Here are further …… -
Java – how to use JAXB to validate XML schema?
I am using XML and JAXB because I ungroup and group XML into Java objects and vice versa Now I try to validate our XML…… -
Java – Google cloud messaging – instant or long received messages
I'm using Google cloud messaging in my last year's college project Everything is going well, but I've been having trou…… -
Java – * and *? In spring @ scheduled (cron = “…”)
I've been looking at the spring boot example to schedule tasks( https://spring.io/guides/gs/scheduling-tasks/ )And r…… -
Java – all natural numbers, the sum is n, and the reverse sum is 1
I have a problem to solve N natural numbers are given I need to find a list of natural numbers, sum to a given number,…… -
Java – how do I associate a string with each member of an enumeration?
Suppose I have some enumerations as follows: enum Towns { Rome,Napoli,Modena } I want to associate a string with each …… -
Java – can I double or BigDecimal overflow?
Java 8 gave us math Addexact() is an integer, but not a decimal Can double and BigDecimal overflow? According to doubl…… -
Java process memory grows infinitely Memory leak?
We have a java process running on Solaris 10, serving about 200-300 concurrent users Administrators have reported that…… -
Java – publish AAR files to Maven central, gradle does not work
Publishing a file to Maven central and gradle still doesn't work: OK, let's restate all the steps I follow and try to …… -
Java – how to use Apache POI to select and bold the entire worksheet
I am a beginner of Apache POI library In VBA, I know I can use the following code to select and bold the entire worksh…… -
Java method call performance
I have this code to do range minimum query When t = 100000, I and j always change in each input line, and its executio…… -
Will JavaFX 8 implement text field validation support?
JavaFX 2 does not provide validation support (mask, input filtering, etc.) It is difficult to adopt technologies that …… -
Java – add API baselines in eclipse
Compiling the eclipse source library I tried to add API baseline, but I don't know how to add it or add it What are AP…… -
Opencv enumeration variables (such as cv_bgr2gray or cv_aa) are missing from recent Java APIs?
I set up a java project in eclipse to detect faces and eyes in images Solution CV_ Bgr2gray shall be defined as imgpro…… -
Java – multiple DEX file definitions / buildconfig, unable to find reason:
I am using the new graduate building system and I am facing the following problems: UNEXPECTED TOP-LEVEL EXCEPTION: co……