Java
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Using java 9 JDK to locate Java 6 will issue a warning
I'm trying to build a project using JDK 9, because using javac's – release parameter means that it can build for an ol…… -
Java – listener for session expiration in spring
I am new to spring and use it for authentication One problem I face is that when the browser closes or encounters any …… -
Java: regular expressions escaping regular expressions
This sample data is returned by the web service I want to split them with split (",") and try to see the results with …… -
. Net – thread stack and stack
How to generate new threads, i.e. memory heap, how memory stack is related to threads, and how to allocate memory? I k…… -
Java – missing classpath entry in eclipse
I am using eclipse, Helios service release 2, build ID: 20110218-0911 I created a new dynamic website, in which I adde…… -
The wrong class was called in the multi version JAR file on Java 9?
I found a problem with the applet using multiple versions of jar. I hope someone can help me I have a very simplified …… -
How to declare 32-bit integers in Java?
I am looking for a Java application running on 32 - bit and 64 - bit systems, which mainly deals with IP addresses The…… -
Java – preserve keyboard layout in swing applications?
I have a Java Swing application that generates sub dialog boxes with text controls The problem is that when you change…… -
Java – should enumerated objects be stateless?
According to the design, the enumeration constant in Java is a singleton. For concurrent use, I usually create statele…… -
How to set up a complex java development infrastructure?
I am looking for a complete java development infrastructure that integrates: >IDE like eclipse, > build system l…… -
Java – unable to get JPA entity ID in JSON output
We are trying to use the POC of spring data JPA and spring data rest We are using a simple entity that extends abstrac…… -
Java – JAXB uses the extension object factory to extend the generated code – explicit conversion, okay?
I have some JAXB - generated beans, which are hierarchical. For example, a bean has a list of other beans Now I want t…… -
How to use java to get the list of available serial ports in my computer?
I just run some code to get the list of available ports in my cmputer. When I have three free COM ports, it returns my…… -
Java – Eclipse: externalizing strings?
It seems that the "externalize strings" function can get all the contents, generate a messages class, and a Txt file, …… -
How to force timeout to drivermanager Getconnection () method call?
I have an application that will establish a database connection with MySQL and execute queries Sometimes, drivermanage…… -
Java – maps and generic maps
I want to create a (recursive) map That is, the type value of the map is another map of the same type as the external …… -
Java – how to run a selected set of unit tests in eclipse with a single mouse click?
I want to create an initiator / run configuration that runs JUnit tests only in a selected set of test classes or sele…… -
Java – runtime errors in JUnit testing
I'm very unstable about unit testing, but I have part of the code, and I really need to make sure it's consistent I tr…… -
Java – how to rename methods programmatically using JDT
My goal is to programmatically call refactor > > to rename eclipse commands for methods in Java source files Ren…… -
Java – what is netbean lookup?
It's hard for me to understand that Basically, this lookup API is used to maintain the loosely coupled nature between …… -
Java – set EditText to a single line so that it loses focus after pressing enter
I use EditText in my code and compare its contents with a string when I click a button setSingleLine(true); Prevent th…… -
JavaFX – drag and drop works differently in Java 11 than in Java 8
I wrote a program that uses the drag and drop function in JavaFX It works perfectly in JavaFX 8 In JavaFX 11, the drag…… -
Java – JSTL – iterating user-defined classes using foreach
See English answer > javax servlet. ServletException: javax. servlet. jsp. Jsptagexception: don't know how to itera…… -
Java – null object design pattern vs null object check
Why is null object design pattern better than null object checking Null Object design pattern Solution The whole probl…… -
Java – how do I easymock actors?
How can I simulate an actor's performance sqlMapClient sqlMapClient; sqlMapClientImpl sqlMapClientImpl = (sqlMapClient…… -
Java – what should JAXB return from the ‘beforemarshal (marshaler)’ method?
First of all, I'm not talking about Marshall #listener Anyone can tell me what should be returned from the Boolean bef…… -
Java – I should put log4j Do you want to put the properties file into the library?
I have a library project This project uses log4j for logging I should put log4j Properties into the generated jar? If …… -
Java – why doesn’t visualvm profiler configure my Scala console application?
I think this problem is closely related to this problem, but it has been closed, and the solution seems unclear to me …… -
Java – has multiple types of JSON string map [string, object]
I have this JSON string: { "startDate" : "2014-12-17T14:31:40Z","name" : "Izek","age" : 12 } When I use Jackson to c…… -
Restricted Boltzmann machine and deep learning java code
Since the last few days, I am reading and studying restricted Boltzmann machine and deep learning Now let's test the a…… -
Java – create, update and get the same / different dto objects in the rest endpoint?
Consider using userdto class and usercontroller public endpoint to create, update and obtain users Having the ID attri…… -
Java tries and catches IOException problems
I tried to use some of the code I found at the bottom of this page This is the code in the class I created for it: imp……