Java
-
Java – spring hibernate persistence does not cause insertion
I'm trying to implement a simple Dao @Repository("iUserDao") @Transactional(readOnly = true) public class UserDao impl…… -
Multithreading – Perl threads slowly consume memory
I'm running a Perl server with 10 threads They will never be broken before the program exits, but this is my intention…… -
Lambda for JavaFX Task
The compiler provided this error for this Code: "the target type of a lambda expression must be an interface": Task<…… -
When should I use Java’s stringwriter?
What is a Java stringwriter and when should it be used? I've read the documentation and looked at here, but I don't kn…… -
Java – Android GC considerations – when does the GC run and can track its running status from the code?
I've been looking for some detailed design documents describing the architecture of Dalvik VM garbage collector, but I…… -
Where can I get tools for use with earlier versions of Java 8 JDK jar
Where can I get tools from earlier versions of Java 8 JDK jar？ Without it, my java 1.8 Maven POM based project in Net…… -
WebSphere – where can I find a specific version of IBM JDK / JRE for windows?
I'm trying to get a JDK sensitive Oracle Software used with WebSphere. I need to find some specific versions of IBM JD…… -
Java – wierd syntax – underline between numbers
See English answers > java 7 underscore in numeric literals8 int _ = 8; System.out.println(5_5); The question is "w…… -
Java optimized string and character array
In my program, I'm doing a lot of string operations I'm trying to improve performance and wonder if using char arrays …… -
If the parent class / interface changes, will the bytecode of the class change?
I am trying to determine whether some jars need to be recompiled in the build chain. If I have the following structure…… -
Java – how driver classes reside in JDBC 4
A good addition in version 4 of JDBC is that you don't have to load it explicitly What's my problem? What if there are…… -
Java – an algorithm for calculating public group membership using big data
I need to write a program to calculate the number of times two users are in the same group Users are assigned by user …… -
What should be the size of the icon in the Java – alertdialog?
I'm trying to assign an icon to an alertdialog, but I keep getting a memory error (seems to be from the size of the ic…… -
Java – generic methods with different return types depending on the call location
I have the following methods to use generics to execute getters for each item in the list it receives: public static &…… -
Java – why does atomicreference CAS return false with a value of 128?
I use atomicreference to implement atomicinteger However, in testing, I noticed that even in a single threaded environ…… -
How to create an extensible list using Java Swing
I need to make an extensible list using java swing I'll try to demonstrate: Not expanded: >[Expand me!] >[And m…… -
Java – cannot convert to internal representation
I am using Oracle database and Tomcat 6 server to provide broadleaf commerce application org.springframework.jdbc.Unca…… -
. Net – what is the current performance of mono virtual machine?
The network is full of different types of performance tests for different languages, compilers and virtual machines Ho…… -
Java – a regular expression used to split strings separated by | when not enclosed in double quotes
I need a regular expression to calculate the number of columns in the pipeline delimited string in Java For example: "…… -
Easy in Java
Make sure it's an easy person who sees it first! Why code in Java long one = 1 << 0; long thirty = 1 <<…… -
Java threads in libgdx
Hey guys, I'm making a game with libgdx. I really want to operate the game, so I run a drawing loop and a logic loop o…… -
Java – calculate method call stack size to check stackoverflowexception
This morning I answered a question related to stackoverflowexception This person has asked when a stackoverflow except…… -
Java – where does JIT compiled code reside?
So I have this method written in Java: public void myMethod(int y){ int x = 5 + y; doSomething(x); } And suppo…… -
Java soap request – read soap response
I am trying to get the specific value in the response from WebService Unfortunately, I don't know what to do. I use th…… -
Java – print ArrayList element?
How do I print element "e" in ArrayList "list"? ArrayList<Dog> list = new ArrayList<Dog>(); Dog e = new D…… -
Java – is the localecontextholder secure in the service layer
According to the official documents, the localecontextholder is: So it's related to the current thread, but it's about…… -
javax. mail. What’s the use of session?
I'm taking a class in charge of sending e - mail It looks like this (Simplified): /* ... */ Properties props = System.…… -
Why does setting properties in a session sometimes fail in a java servlet?
I am developing a fairly simple web application using JSP and java servlet running on Tomcat I have been able to set p…… -
Java – develop plug-in 6.8 for NetBeans
I want to develop a plug-in for NetBeans 6.8, but I can't find enough tutorials / resources / articles The only decent…… -
Java – spring boot w / embedded Tomcat does not send requests to the controller
I have an application using spring boot and embedded Tomcat container As far as I know, my code is the same as spring …… -
What does the load () method of Java – hibernate do for non-existent IDS?
I'm interested in session JavaDocs on load is a little confused: I understand that I should use get, but what I don't ……