包含标签：Java 的文章
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Meaning of import statement in Java language
When we use the import statement in a java file, can anyone clearly explain to me what happened? If we add more and mo…… -
Java – hibernate 4: persistent inheritancetype Joined identifier column value
I have a simple joined document hierarchy: CREATE TABLE Documents ( id INTEGER NOT NULL,discriminator ENUM('official…… -
Java – no JTA UserTransaction is available – specify ‘UserTransaction’ or ‘usertransactionname’
The Spring Trading encountered a strange problem My application uses spring and EJB EJB also calls the spring service …… -
Get file name from input stream (Java)
If I have this code, how can I keep the file name of the original file or reassign it to the new file?: InputStream in…… -
Java code coverage tool that supports source code exclusion
I currently use clover to measure the code coverage of Java code One feature I rely on is the ability to exclude arbit…… -
Java – Maven: attach multiple artifacts
I have a maven project that uses some custom jars [not found in any repository] To add them with Maven builds, I use a…… -
Java – multiple colors for each item in jcombobox
I tried to make one Combo@R_514_2419 @Use different colors for different items I wrote some test code, but it didn't s…… -
Java – how do you simulate output streams?
By 'output steam' I mean any object that receives a sequence of bytes or any character So, Java io. OutputStream, and …… -
Java – format JSON before writing to file
At present, I am using Jackson JSON processor to write preference data and files, mainly because I want advanced users…… -
Is it faster (or better) to declare array inlining in Java?
Consider the following two almost equal method calls Notice how byte arrays are declared and allocated on both void Me…… -
Java – NullPointerException when the viewpager is displayed for the second time
The viewpager clip I use has two clips for children This is great, but when I replace the viewpager fragment with anot…… -
Use Boolean The valueof () method vs (or Java 1.5 autoboxing) creates a Boolean object
Boolean. Valueof() and Java 1.5 auto@R_750_2419 @A better approach between ing is to create Boolean values from Boolea…… -
Java – define encryption suite for TLS in JCA
I want to use JCA to support the following cipher Suites in TLS: > TLS_ PSK_ WITH_ 3DES_ EDE_ CBC_ SHA > TLS_ PS…… -
Java – why does the interface extend object according to the class file format?
Why does the JVM specification declare that the interface must have a super of Java / Lang / object_ Class, even if th…… -
Mongo Isodate query in Java
I have a Mongo query executed: query = { "dateField" : { "$gte" : ISODate('2011-11-10T07:45:32.962Z') } } When I exec…… -
Java – optical character recognition Android and opencv
At present, I am carrying out a project involving optical character recognition in Android. I really need the pointers…… -
How to convert ArrayList to JSON in Java
I have an ArrayList, which has a bunch of domain objects As follows: Domain [domainId=19,name=a,dnsName=a.com,type=0,f…… -
Java – how to always display decimal parts when using decimal format?
Float sum = new Float(300); // always somehow calculated Float sum = new Float(300); // always somehow calculated Deci…… -
Java – adjusts the selected file to filefilter in Jfilechooser
I write a graph editor in Java This application can choose to export to various standard image formats, such as jpg,. …… -
How to process different versions of XSD files in a Java application?
fact In my java application, I have to process XML files of different schema versions (XSD files) at the same time The…… -
How to debug Java Swing layout
There is a way to print layout information for specific components I know one way is there, but I forgot the name When…… -
javax. inject. Singleton and javax ejb. Differences between singletons
I'm confused javax inject. Singleton and javax ejb. What's the difference between singletons? Solution Adam bien gives…… -
Java – Android – disable the mylocation button on Google Maps
See the English answer > disable center button in mylocation at Google map API V23 I want to delete the mylocation …… -
Double precision of “= =” operator in Java
This method returns' true ' Why? public static boolean f() { double val = Double.MAX_VALUE/10; double save = val…… -
Java – Create directory recursively
Does anyone know how to use java to create subdirectories based on N-level depth letters (A-Z)? /a /a /a …… -
Java – jax-ws and saaj style, which one is used
What is the difference, philosophical or otherwise, between using the service and dispatch class and the soapconnectio…… -
Java – how to start the server Daemon in spring
I want to start the daemon mail service thread when the Tomcat server starts So I annotated a method with @ async anno…… -
Java – use ebean to map a collection of strings and enumerations (play 2.0)
There was a problem mapping strings and enum collections in my entity I followed different advice, but it didn't seem …… -
Java – how do I find file sizes in scala?
I'm writing a Scala script and need to know the size of a file How to execute correctly? os.stat('somefile.txt').st_si…… -
Java – how to add references in eclipse
I developed some software in access / VBA It handles lotus notes, so in the visual basic editor, I just went to the to…… -
Java – Scala point syntax (or missing)
When I came across a piece of code that meant nothing to me, I was experiencing this wonderful book Programming in sca…… -
Does Java support Julian calendar?
Oracle docs http://docs.oracle.com/javase/6/docs/technotes/guides/intl/calendar.doc.html It claims that Java supports ……