Recent Posts
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How to programmatically simulate arrow key pressing in Java FX
I want my JFX application to simulate arrow key presses (when they are registered in textfield), but I can't figure ou…… -
What is the meaning of event consumer in JavaFX?
I tried to understand event handling in JavaFX, where I found this line Can you explain the meaning of event consumpti…… -
Print 1 to 100 using 10 threads in Java
I'm new to multithreading. I got a problem. I used 10 threads in Java to print 1 to 100 below the constraint >Threa…… -
Java – the best way to use a PostgreSQL database as a simple key value store
I was asked to use the PostgreSQL database, which will replace my current BerkeleyDB Although; I realized that this wa…… -
Strange behavior of println () method in Java
class W { class W { static int count=0; W() { count++; System.out.print("c "); } pub…… -
Java – any way to disable known host checking using jsch?
I tried to ridicule jsch and SSH tire connection to Java local remote (Solaris) host I usually use putty. Every time I…… -
Java – warning: [overloads] method M1 and method M2 have potential uncertainty
import java.util.function.*; import java.util.function.*; class Test { void test(int foo,Consumer<Integer&…… -
java LinkedHashSet
I have been studying for ocjp (former scjp), and I have encountered the following example of using linkedhashset: publ…… -
Java GUI: Document Object Model
HTML has a document object model, and then JavaScript can manipulate / move When I create a GUI in swing - the model l…… -
Java – parses JSON responses into objects
Good evening, import javax.ws.rs.core.MediaType; import com.sun.jersey.api.client.Client; import com.sun.jersey.api.c…… -
Do we really need to create a stub in Java RMI?
I'm reading some RMI documents. All the books say that we need to create a stub for the client to communicate with the…… -
Java – what is’ savedinstancestate ‘?
I'm new to Android development, but I have some understanding of OOP concepts I'm trying to learn Android from a Java …… -
Java – invalidate the @ cacheable entry through comments on the interface?
I'm using spring and @ cacheable annotations to cache some database entries I want to invalidate the full cache period…… -
Java – ora-24816: extended non long bound data provided after the actual long or lob column
I encountered an exception while updating the table in hibernate Ora-24816: extended non long bound data provided afte…… -
Java uses 100% CPU on Linux
On my Linux server, any Java program (even "Hello world") uses 100% CPU and is very slow ID does not depend on the Jav…… -
Java – how to read streams one by one?
Java Stream. The foreach function has a serious limitation that its consumer cannot throw a checked exception Therefor…… -
Java – JPA encountered null or zero primary key in unit of work cloning
I understand JPA and have the task of creating a database and inserting some values for it I want to know how to find …… -
Java – convert persistenceexception to dataaccessexception in spring
I am trying to handle unique key constraint violations in spring JPA hibernate environment I use persistenceexception …… -
Java EE – @ requestscoped CDI injection @ messagedriven bean
If I use JMS to inject request scoped CDI beans into the @ messagedriven EJB, as shown below, can I assume that any gi…… -
Error: Java Lang. unsupported operationexception: no image data is available when using the blobstore and image APIs of App Engine
I need to use App Engine blobstore to retrieve the height and width of the uploaded image To find me, I use the follow…… -
Java EE – jee6: what can @ resource inject?
I try to find out what can be injected into a stateless session bean through the @ resource annotation Where can I fin…… -
Java – oncheckedchangelistener or onclicklistener with if statement for checkbox? What’s the difference between functions?
Hello, I'm creating an Android application that uses checkboxes. I want to know if onchecked changelister is better us…… -
Upload Base64 encoded images to Amazon S3 using java
I'm trying to upload files to Amazon S3 storage using Amazon's Java API Code is Byte[] b = data.getBytes(); InputStrea…… -
Java – will Add the class file to your eclipse project
This is a new question, but I can't understand it, so I think I'll ask it here to see what happened The problem here: …… -
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Java – multithreaded access and variable caching for threads
If I read a complete chapter / book on multithreading, I can find the answer, but I want a faster answer (I know this …… -
Java – why collection ToArray (t []) does not use E []
The toArray method (selected in java.util.arraylist) is as follows: class ArrayList<E> ....{ public <T>…… -
java – android. view. Inflateexception: binary XML file line #6: error ballooning class fragemnt
This error occurs when the application starts I received many kinds of errors displayed in subj These mistakes seem to…… -
. Net – why ignore dataannotations when using a DataGrid with autogeneratecolumns = “true”
I'm using WPF DataGrid to bind to a collection of custom classes Using autogeneratecolumns = "true" in grid XAML, the …… -
Java – which is extensible? Simple crud webapp communicates with webapp and rest services
I think the title makes this clear I am not a master of scalability I'm about to create a web application that needs t…… -
Java Jagged Array
Our job assignment requires us to use zigzag arrays to store the values of two-dimensional Boolean matrices Is there a……