包含标签：Java 的文章
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Java – jedis – when to use returnbrokenresource()
When we should use this method In jedisconnectionexception, jedisdataexception or any jedisexception For jedis, my kno…… -
Java RMI – client timeout
I am using Java RMI to build a distributed system, which must support server loss If my client uses RMI to connect to …… -
Java – optimizationlockexception when JPA merge() is used
I have a rest app where a resource can be updated Here are two ways to accomplish this task: > updateWithRelatedEnt…… -
Clojure macro for calling Java setter based on map?
I wrote a clojure wrapper for the Braintree Java library to provide a more concise and idiomatic interface I want to p…… -
Java 8 parallel streams use the same threads for sequences
Say we have such things: LongStream.range(0,10).parallel() .filter(l -> { System.out.format("filter: %s [%s]\n",l…… -
Is java – bytearrayoutputstream secure without flush() and close()?
So, will bytearrayoutputstream cause memory overflow if it is not refreshed and closed correctly? I mean, is it necess…… -
Java – the difference between head and tail recursion
See English answers > what is tail recurrence? 20 The definitions I was told are as follows: Tail recursion: if the…… -
Java – use ejbcontext getcontextdata – is this safe?
I plan to use ejbcontext to pass some persistent lifecycle callbacks that cannot directly inject or pass parameters (s…… -
Java – how to display a temporary balloon tooltip during input validation?
I'm a little used to Gui idioms. When I input an error in the text input field, a balloon pops up from the field, with…… -
Java – the strict order in which messages are processed concurrently
In my Java EE web application, I need to strictly process incoming mail in the order of arrival I assume that my webap…… -
Object variables and class variables in Java
I'm learning Java. I don't understand the difference between object variables and class variables All I know is that i…… -
Java – Google glass’s Hello world program – step by step
A week ago, I started reading the content developed by Google glass, including this However, I still can't find a tuto…… -
Java – variable or immutable classes?
I have read some design books. Immutable classes improve scalability and write immutable classes as much as possible B…… -
Java – JPA best practice: statically finding entities
Imagine that an event entity references a state entity: @Entity @Table(name = "event") public class Event() { @Id …… -
Java – handling custom exceptions in spring security
We are using spring MVC spring security hibernate to create a restful API Authentication can occur in a variety of way…… -
Do java blocked threads consume more CPU resources?
I want to ask if Java will use more CPU resources when a thread is blocked, that is, waiting to lock the monitor curre…… -
Java – spring crudrepository exception
I have this spring data crudrepository to handle CRUD operations on DB @Repository public interface IUserRepository ex…… -
Java – causes the logger to skip the root section in the logback
I have several recorder definitions and a root part with several Appenders, as follows: <logger name="X" level="deb…… -
Can an object be stored on the stack instead of the heap in Java?
Can an object be stored on the stack instead of on the heap? I recently experienced this blog http://www.programmerint…… -
Why do integers not represent Nan in Java?
When I write something like double a = 0.0; double b = 0.0; double c = a/b; The result is double Nan, but when I try t…… -
Java classloader authorization model?
When loadclass () is called on classloader, does classloader first check whether the class is loaded, or delegate this…… -
Java – IntelliJ switch statement uses string error: use – source 7
I tried to use IntelliJ (on Mac OS X) to compile some code I wrote using eclipse I tried to run the following code: sw…… -
Java – how do i disable pop-up form based login for restful endpoints?
I use spring security configuration based on forms and authentication, according to auto config = 'true' I hope that t…… -
How to load Java property files and use them in spark?
I want to store spark parameters (such as input file and output file) in the Java properties file and pass the file to…… -
Exception in thread “main” Java lang.NoClassDefFoundError：org / apache / commons / codec / DecoderException
I try to query Solr through solrj This is my code public class ReadFromSolr { public static void main(String[] args) …… -
Java – how to build an executable jar from a multi module Maven project?
I'm a beginner and don't know much I can build simple executable jars, but how to build a multi module Maven project i…… -
Java – can I ask the JDBC template to extend a list parameter for use in an in () clause?
Can I do this select * from mytable m where m.group_id in (?) ... and pass in a list or array parameter to extend to m…… -
Java – iteratively find a map entry at the index?
I have a LinkedHashMap I want to get foo in index n Is there a better way to do this than iteration? int target = N; i…… -
Multiple OpenGL contexts, multiple windows, multithreading and Vsync
I am using OpenGL to create a graphical user interface application that can have any number of windows - the "multi do…… -
”””Is it a good way to convert an integer to a string in Java?
See the English answer > How do I convert from int to string? nineteen int i = 0; String i0 = i + ""; So, is this a…… -
Java – why can’t you call a super constructor from an enumeration constructor?
public enum A { public enum A { A(1); private A(int i){ } private A(){ super(); // comp…… -
Java – maven-tomcat7-plugin generates a corrupted executable jar
I encountered a problem when using the maven tomcat7 plug-in to generate a jar archive with an embedded tomcat7 instan……