Recent Posts
-
“Synchronized (this)” vs. “synchronized ((baseClass) this)” in Java
Is this variable being safely accessed by using synchronization? Heirs of For the following procedures, Class SubClass…… -
Code snippet for creating a file from the contents of a blob in Java
I have some files stored in the blob column of the database in Oracle 9 I want to store those files in the file system…… -
Java – optimistic cache concurrent design pattern
I have a web service running on a set of servers The network service performs some internal processing, and then you c…… -
Java – Proguard does not obscure jar dependencies
I have a project with POM given below XML file When I issue the command MVN clean compile assembly: single install, I …… -
Which mobile phone supports which J2ME (Java Micro Edition) specification?
I can't find the latest chart on which mobile device supports which Java I'm particularly interested in Nokia smartpho…… -
Java – can I specify a class wide group on a TestNG test case?
I have a base class to represent database tests in TestNG. I want to specify that all classes extended from this class…… -
How to get the source code of web pages from Java
See English answers > How do you programmatically download a web page in java8 > http://www.cumhuriyet.com.tr?hn…… -
Java – how to convert string arrays to objects using gson / JSON?
I have a JSON like this: [ [ "Passport Number","NATIONALITY","REASONS" ],[ "SHAIS100","INDIA","" ],[ …… -
How to eliminate the gap between large Java Swing Tags
In my application, I have a label with a font size of more than 200 This label contains large up and down (irregular) …… -
Java – the usual hibernate performance trap
We have just finished configuring our application She's starting to slow down This is a legacy mapping Who works, do t…… -
Java – weave yourself into a corner
We have a set of classes derived from a set of common interfaces IFoo-> BasicFoo,ReverseFoo,ForwardFoo IBar -> U…… -
Java – sets the ideal size of the thread pool
See English answers > performance issues with newfixedthreadpool vs newsinglethreadexecutior1 newSingleThreadExecut…… -
How do I check the number of threads currently running in Java?
I'm looking for a way to see how many threads are currently running >First > programmatically via windows Soluti…… -
Java – the best way to compare enumerations
See the English answer > comparing Java enum members: = = or equals()? 16 Color c1 = Brown,c2 = Red What is the bes…… -
Java – have I implemented equals and hashcode correctly using Google guava?
I am using hibernate and need to rewrite equals and hashcode () I chose to use Google guava's equals and hashcode assi…… -
Java – how to create docker image files and value parameters for local applications
I have a Java application (jar file) that I want to be able to run from the dock image I created a docker file to crea…… -
Populate check boxes in JSP pages with data from JavaBeans
I have a JSP page with check boxes in the HTML form, as shown below Now, when editing user skills, I want to get comma…… -
Java – unit testing using Apache Mina as an emulated / in memory SFTP server
I'm working on how to use Apache Mina Their documents are a little inadequate for my powerless brain I've seen useful …… -
What is the difference between const and volatile pointers?
What is the difference between const and volatile pointers? Solution The difference really comes down to the differenc…… -
Java – how to solve ‘define and throw special exceptions instead of using general exceptions.’
When the length of the two lists is not equal, I need to throw runtimeException We use the sonarqube tool for code rev…… -
Java – how do I check if a thread terminates?
When does the thread reach the termination state? When the end of the run () method is reached, will it be terminated?…… -
Although the serializable interface in Java has no methods and no fields, it can realize its functions What about?
Although Java io. Serializable interface public interface serializable {} surprisingly does not contain any methods an…… -
Java Double vs double：class type vs primitive type
I'm curious about the performance difference between Java classes and primitive types So I created a small benchmark a…… -
Java syntax sugar
I came across this code block today. I don't know how it works I know how to do anonymous classes, but I'm used to see…… -
Reflection – Java 8 – invalid constant type
I have a problem with the reflections library Dependency and in POM Build in XML <dependency> <groupI…… -
java – Cron Job in play framework 2.0
How to schedule tasks in play framework 2.0 through cron expressions? Equivalent to @ on ("< enter cron expression …… -
Java – what is the best practice when implementing equals () with entities that generate IDS?
If I have a table a, B, C, D Now, if I'm going to create a business object based on this table (for example, in Java),…… -
Java – softreference collects garbage too early
I am implementing a caching mechanism for my Android application@ H_ 404_ 2 @ I use softreference, just like many exam…… -
Java – using maven, OSGi, and bndtools
Today, I was asked that using Maven in our current OSGi application is a good idea We use bndtools and it's great beca…… -
Java – best practices for controlling access to “. Internal” packages
I write eclipse plug-ins and export some classes as APIs, while I want to restrict access to other classes I follow ec…… -
Java – is this object mutable?
If I have such a class: @ h_ 301_ 2@public class MyObject { private int myField = 2; public void setMyField(int f) { t…… -
Java – the error message “attempt to split long or double on the stack” indicates?
The following error occurred in my code: I am ignorant of the origin of this error and do not know how to debug it Wha……