包含标签：Java 的文章
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Java – how to disable automatic updates in Hibernate / JPA
Can I stop hibernate from automatically updating persistent objects? @Transactional public ResultTO updateRecord(R…… -
Java – JBoss as 7 cannot inject resource using @ persistencecontext_ Local container managed entitymanagers
I am using JBoss as 7.1 1, and you can configure a new JTA data source and connect it to my EJB @PersistenceContext(un…… -
Why doesn’t Java allow static methods to be hidden through instance methods?
As http://docs.oracle.com/javase/tutorial/java/IandI/override.html As shown in, Java allows >Override instance meth…… -
Java – things to consider when building a framework
We are planning to build a framework: a cost estimation framework that will be used in all areas of our organization T…… -
Java – proper use of bonecp
I just started using bonecp and extracted JDBC code from the author's website I have a function called getconnection (…… -
Java – identify future time zone transitions
I need to predict that the next transition of at least 2 time zones will be a specific time zone Java 8 provides a new…… -
Why doesn’t Java convert int [] to integer []
When I do the following things, >Arraylist1 – contains an element that is an int []. > Arraylist2 – not compilin…… -
Java – a good way to filter lists sorted by attribute and by date
I have very simple things to do. I have such a list of personnel: [{ name: John,date: 01-01-2018,attend: true },{ …… -
Implementing label bar in JavaFX
Demonstration answer: (3:10 a.m. on May 29) **10 / 7 / 2016 * * you can find the code in GitHub Answer to practical qu…… -
Java – performance overhead of AOP
I wonder if there are any major performance problems if AspectJ is used to intercept every (or most) method in the app…… -
Java – can I force the elimination of what rhinoceros calls overloading?
Perform the following tests: public static class Scripted { public void setThing(List<?> list) { Sys…… -
Java – why does “MVN assembly: single” use only assemblies to create a fat jar instead of my code?
I have a maven project created with spring roo When I run MVN assembly: single, I get a fat jar containing all the dep…… -
Java – displays a histogram of image data
Sometimes I need to display the representation of image data in the form of a histogram I am particularly interested i…… -
Java – any tutorial on the official GWT MVP framework?
Has anyone found / written any tutorials in the official GWT MVP framework found in GWT 2.1 RC? Solution Google has up…… -
java. lang.reflect. Method. Name comparison in equals (object obj)
The following is Java in Java 7 lang.reflect. Method. Implementation of equals (object obj): /** * Compares this {@co…… -
Java – XPath for finding ancestor nodes containing CSS classes
I'm writing some selenium tests. I need to be able to find the ancestors of the webelement I've found This is what I'm…… -
Java – vertical header file in JTable?
Is there a way to rotate the JTable column header 90 degrees? Solution View Darryl's vertical table header cell render…… -
Java – access referenced libraries from packages in eclipse
If I save the class in the default package, I can only access the referenced library class If I try to access it from …… -
Java – Tomcat does not parse War symbolic link
I have a development machine. I installed Tomcat before and just run it as the same user who is developing I will $Cat…… -
Java – spring Roo, field enumeration
I'm new to spring MVC and spring roo What is field enumeration? How do I enumerate all allowed values? Is it implement…… -
Open layers and events in multiple layers (openlayer. Layer. Vector)
Another day working with openlayers and another problem That is, for different types of things (cars, history and regi…… -
Java – use Apache Commons ftpsclient to “require 550 SSL / TLS on data channel”
When I use ftpclient to read data on FTP server (proftpd 1.3.3a), I encounter a problem and need to encrypt the data c…… -
Java – how to disable hibernate authentication in spring boot projects
I have a spring guided project with a crudrepository, an entity and a controller I basically try to persist an entity …… -
Java – split and convert string to int
There is something wrong with my code I read several text files For example: 1,21,333 Using my following code, I want …… -
Java – how to implement XMPP to send push notifications
I want to use XMPP so that my app will send updates to Android phones (1.5 and later) I'd like to use XMPP to send pus…… -
Java – how to unit test a class that implements runnable
I have a class that implements the runnable interface, examplethread public class ExampleThread implements Runnable { …… -
Where are arrays stored in memory?
If I have a function in which I declare: Object arr[] = new Object[20]; Where are the ARR and the entire array stored?…… -
Multithreading – what is the point of cache consistency?
Is it useful from a practical point of view to provide cache consistency on CPUs like x86? I understand that the idea …… -
Exception in thread “main” Java Lang. outofmemoryerror: GC overhead limit exceeded in GWT application
I am developing applications using GWT and gae When I try to rebuild it or create an artifact, I get a lot of errors a…… -
Java – gets the number of specific elements in the list
I'm looking for a quick way to find the number of list elements as a specific element: List<String> list = new A…… -
Java: what are ioexceptions in BufferedReader’s readline()?
I can "fix" the following exception with a try catch loop, but I can't understand the reason >Why does the "in. Rea…… -
Date to UTC format Java
I have such a string 2013-10-22t01:37:56 I need to change this string to UTC date format, such as mm / DD / yyyy KK: m……