Recent Posts
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Java – how to set JFrame as the parent of jdialog
I cannot set the frame as the owner of the dialog box Usually, when I extend the jdialog class to create a dialog box,…… -
Java – break down work into multiple threads
I have the following problems: for performance reasons, I need to split work across multiple threads, but I don't know…… -
Java – spring and Hibernate suddenly set transactions to read-only
We have one in JBoss 4.2 3, using spring 2.5 2 and Hibernate 3.2 6.ga. This is running on Linux jee01 2.6 16.60-0.54. …… -
How are enumerations internally represented in Java?
Java enumerations are classes They are compiled into classes How does the following example compile? What is "class"? …… -
Pure Java text interface for roguelike games
OK, that sounds like a crazy idea - but I'm interested in emulating the 1980s style roguelike game text interface in p…… -
Closure in Java – syntax differences between the three main proposals?
Three main schemes for adding closures to the Java language have been proposed: >Bgga (bracha gafter Gosling ah é) …… -
Java – command button in JSF
How to implement the back button as a command button for general work? Unlike the back button, I don't mean the browse…… -
Java – how to clear jtextfield when the mouse clicks jtextfield
When the mouse clicks on the text field, I need to make the program clear the text from the text field I've tried some…… -
Java – the best way to implement a large state machine?
Basically, I have a state machine that controls the attack of game characters, and its time is based on the length of …… -
Multithreading – lockless memory reclamation with dangerous pointers
Hazard pointers is a technique for safely reclaiming memory without garbage collection and lock - free code The idea i…… -
Java-8 – why doesn’t map extend functions?
While using the new Java 8 stream API, I want to know why not: public interface Map<K,V> extends Function<K,V…… -
How to control the width of jtextfields in Java swing?
I try to have several jtextfields on a single line, but I don't want them to have the same width How do I control the …… -
Check is not empty in Java
Imagine that I generated an XML generated entity in Java, which contains some data I need <Car> <Engine>…… -
Kotlin code compiled as jar for Java projects?
I wrote a Java library in kotlin, and I want to compile it into a jar that can be used by Java and kotlin applications…… -
java – Hibernate. How does initialize () work
I know that we use lazily to load objects / collections outside the session. We do hibernate Initialize (object obj) s…… -
Java – does integer auto boxing and auto boxing provide performance problems?
We are using X for some iterations and other operations; Where x is an integer, not int Operations may be repeated in …… -
Tab navigation in JavaFX textarea
How do I click tab in textarea to navigate to the next control? I can add a listener to the CATH de key press event, b…… -
Java – Convert integer list to int array
See English answers > how to convert list < integer > to int [] in Java? 17 Solution I believe you can find s…… -
Java – jax-rs Jackson Jason provider date format problem
Wrt found the following problems: Jersey + Jackson JSON date format serialization – how to change the format or use cu…… -
Compiler construction – will different JDK updates produce different Java bytecodes?
Scenario: I have a project whose source compliance level is specified as 1.5 Now I compile this project with two diffe…… -
Java – how to delete XML version strings from strings
I've read the XML file and used the code given below – String XmlString = ""; String resourcePath=FilePathHelper.get…… -
Java – the caller blocks until getfoo () has a value ready?
I have a java thread that exposes properties that other threads want to access: class MyThread extends Thread { pri…… -
Java – spring data elasticsearch: multiple indexes with the same document
I used spring data elastic search and everything was normal at first @Document( type = "products",indexName = "empty" …… -
Java – can you write a constructor that does nothing?
To use class methods, I need to instantiate a class At present, this class has no constructor (so I want to write it) …… -
Java – database design, without passing JDBC
I have a database design problem and I am facing one of my projects I try to implement a service, and part of this ser…… -
Java – how do I use the onejar Maven plug-in to set additional class path entries in the manifest?
Is there any way to use the onejar Maven plugin to add arbitrary classpath entries to the jar file manifest? I found t…… -
jsf – FacesContext. Getcurrentinstance() returns null in the runnable class
I tried to call FacesContext. in the run () method of the Runnable class. Getcurrentinstance() to get facescontext, bu…… -
Java – inject EJB into eclipse link sessioncustomizer to provide Oracle schema name
In the Java EE 6 application running on GlassFish (3.1.2.2b5), suppose you have a configurationservice, which will rea…… -
Why do we need to use shift operators in Java?
>What is the purpose of using shift operators instead of division and multiplication? Solution Segmentation and mul…… -
Java – the fastest way to insert a very large number of records into a table in SQL
The problem is that we insert a large number of records (more than a million) into a single table from a Java applicat…… -
Java – list of all system properties supported by JRE
Yesterday I added a Java - djsse. Java in JDK 6u30 System attribute with enableccprotection = false I didn't know unti……