包含标签：Java 的文章
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Java – is writer an atomic method?
I want to write some strings to the file Therefore, I use the bufferedwriter class Since many threads tend to write to…… -
Java – can I tell bufferedimage what the original file type is?
In my code, I have a bufferedimage loaded with the imageio class, as shown below: BufferedImage image = ImageIO.read(n…… -
Java – why toolkit getDefaultToolkit(). Beep() does not work in windows?
When I try to use toolkit getDefaultToolkit(). When beep() beeps, it doesn't seem to run on any of my windows computer…… -
RX Java – the difference between interval() and repeatwhen() for polling from observable in the interval
What is the difference between: Observable<String> observable = Observable .interval(0,1,TimeUnit.SECOND…… -
Java – good programming style when dealing with multiple objects
I've been programming a software version of a board game So far, I have written classes corresponding to physical obje…… -
Java – New phonegap 3.0 import org apache. Cordova can’t solve it
I'm using the omnipotent command line to install the new phone gap 3.0 cordova create hello com.example.hello HelloWor…… -
How to convert a string to a domsource in Java?
I need some help In my string filedata variable, I store an XmlDocument Now I want to convert this variable to domsour…… -
How to avoid memory waste when storing UTF – 8 characters (8 bits) in Java characters (16 bits) two-in-one?
I'm afraid I have questions about the details of a rather over saturated topic. I searched a lot, but I can't find a c…… -
Java – stream lists are grouped
I'm looking for refactoring how to use streams in some of my code The first example is my current practice The second …… -
Java – what is the difference between the non xadatasource with JTA = “true” and xadatasource?
I'm confused that we can allow JTA transactions using non - XA data sources So what's the difference between Xa and no…… -
How do I call clojure macros from Java?
Did you call the clojure macro from Java? This is what I am trying to do: RT.var("clojure.core","require").invoke(Symb…… -
Java – string tokenizer: separate strings with commas and ignore commas with double quotes
I have a string like the following – If I mark the string above, I get comma separated marks But I want to use the str…… -
Java – how should I check whether a stream is sorted?
Using Iterable < T >, it is easy to: T last = null; for (T t : iterable) { if (last != null && last.…… -
Java – does anyone locally parse Jax WS catalog. XML of schemalocation on metro xml？
I'm in my A jax-ws-catalog.xml file has been added to the war file XML to parse schemalocation. XML locally rather tha…… -
Java – export JSP tables to excel, word, pdf
Anyone can suggest me any library / jar file that I can use to export my table to excel / PDF / word Please tell me if…… -
Java – JDBC batch execution is extremely slow
Anyone can tell me what I did wrong. I execute 350 plug-ins in MySQL and it takes 40 seconds This is the code long t0 …… -
Java – using the Interpreter pattern on a composite structure
I was asked to use composite, recursive descendant parser and interpreter for expression evaluation This is the syntax…… -
Java – method overloading uses float to display “incompatible type error” but does not contain double
I tried overloading the code with this method, and I got an error code: class Adder { static float add(float a,flo…… -
Java – unknownhostkey exception when accessing GitHub safely
I am using jgit to securely access the repository in GitHub I did the following to generate a secure communication key…… -
Java – jmh means M1 is faster than m2, but M1 stands for M2
I wrote a jmh benchmark involving two methods: M1 and M2 M1 calls m2, but jmh claims that M1 is faster than m2 for som…… -
Are there any Java libraries to use SVG is converted to Png or Jpg code?
Are there any Java libraries to use SVG is converted to Png or Jpg code? Does anyone have this experience? Solution Sp…… -
What is “self inhibition is not allowed”, and why does javac generate code lead to this error?
This new Java 7 try - with - resources construct is quite good Or at least, it was good until an exception ruined my d…… -
Java – virtual web service
I received a WSDL file for the web service interface, which our system should call in the future Before that, I want t…… -
Java – JWT authentication: how to log off?
I implemented JWT authentication for my spring launch application In general, its working principle is as follows: >…… -
Java – you can programmatically access the current heroku dyno ID / name?
On heroku, can you get some identifier of dyno currently executing code from the program through the program? For exam…… -
The Java – Scala ide – play 2 Eclipse Plug-in does not highlight the syntax of scala HTML templates
I installed the scala ide – play 2 plug-in (from http://download.scala-ide.org/play2/nightly_3.0-M_juno_2.10-M/site/ …… -
Java – how to set 40x errors using custom messages on jax-rs exceptions?
I am working on Web services on Jax - rs Now I'm looking for a way to catch some exceptions to send a custom message o…… -
Java lambda sublist
What is the shortest path to express "conditions for obtaining new list B from list a" through Java 8 lambda? Say I ha…… -
Java – use ‘debugunreturnedconnectionstacktraces’ to debug connection loss
I am trying to solve the connection timeout problem of my ongoing project We use c3p0 to manage connection pool and Hi…… -
Java library maintains database structure
My application is always developed, so occasionally - when the version is upgraded - some tables need to be created / …… -
Java – spring-aspects-4 dependency not found
I want to upgrade my project to spring 4, but for aspectweaver-1.8 0.M1. Jar, I lack dependencies When I looked at the…… -
Java thread dump: blocked thread does not have “wait lock…”
It is difficult for me to understand the thread dump obtained from jstack for spring MVC web applications running on T……