包含标签：Java 的文章
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The best way to print simple reports in Java
I have developed a Java application, and now I want to provide some simple printing support Print invoices, reports, e…… -
Multithreading – reentry locking: advantages and disadvantages?
Under what circumstances do people want to use turn back locks and ordinary locks? Solution I think reentrant locks ha…… -
Variable fields of objects in Java collections
I correctly assume that if you have a field contained in the Java collection & (or as a key in the map about the t…… -
Execute diff in Java
I am looking for diff implementation in Java I see Python has its own sequencematcher (with difflib), which is exactly…… -
Java – spring application startup error: source cannot be empty
I'm following the spring tutorial and the following error occurred when I tried to start the spring application: What …… -
Java – manage JAXB generated classes in the Maven project
I have a maven based project in which I try to add some JAXB classes automatically generated by the "jaxb2 Maven plugi…… -
What is the c# equivalent of a calendar in Java?
I am converting java to c# and need to convert code involving calendar: Calendar rightNow = Calendar.getInstance(); St…… -
Java – files cannot be accessed from Src / main / resources through test cases
I have a file in Src / main / resources dat. When I try to test a class that loads the file through a jar file, the te…… -
Java – set the hours, minutes and seconds to 00 in zoneddatetime or instant
I have a date string in UTC format – String dateStr = "2017-03-03T13:14:28.666Z"; I want to convert it to the followin…… -
How to in Weblogic 10 Enable JMX on X
I have a JMX enabled application It has its own JMX proxy and some MBeans When I start an application in Weblogic, I c…… -
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 …… -
Unit testing – unit testing is worth the effort, in a large and old (5yr) code base?
I just joined a team that has been working in the main mode for the past five years (Java, Maven based projects) There…… -
Java – get the result of searchresponse in elasticsearch
I am trying to use es as the index of mongodb I successfully integrated them together, but I found the Search API quit…… -
Add – javaagent to Tomcat 6 server, where can I put it and what format?
I'm trying to install an application health monitoring application that can monitor J2EE Web transactions. I need to p…… -
Java – how is this eclipse view formed?
I am developing an eclipse plug-in, which will add a new context menu. When clicked, a dialog box will pop up, and use…… -
JavaBeans comparison
Does anyone know a free open source library (utility class) that allows you to compare two instances of a java bean an…… -
Java – volatile in method signature?
See English answers > why make a method volatile in Java? 7 class A { protected A clone() throws CloneNotSup……