Java
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How to parse large (50 GB) XML files in Java
At present, I try to use a Sax parser, but about 3 / 4 through the file, it is completely frozen, I have tried to allo…… -
Java string pool and type conversion
My problem is the way Java handles strings It is clear from the Java language specification (JLS) that string literals…… -
Java – AbstractFactory and bridge mode
I just learned bridge pattern and its intention: remove an abstraction from the implementation so that the two can cha…… -
Java – hibernate validator, custom resourcebundlelocator and spring
I tried to override the default resourcebundlelocator in Hibernate authentication 4.1 So far, it works perfectly, but …… -
How to specify the encoding of Java source files?
I used strange Unicode strings in java test cases The compiler seems to interpret the file as ISO - 8859 - 1, causing …… -
Java – bypassing generatedvalue in Hibernate
It is possible to bypass the ID of @ generatedvalue in hibernate. We have a case where we want to use generatedvalue t…… -
Java – JUnit test passed, but pit indicates that the suite is not green
When trying to run pit mutation test, I received the following error: When I do the normal test build, the tests run w…… -
Java – how to reschedule tasks using scheduledexecutorservice?
I saw this in Java docs: scheduledatfixedrate I don't want this to happen in my application Even if I see an exception…… -
How to pronounce “J2EE” or “Java EE”
For all those J2EE / Java EE developers, when talking to people in the real world, you will say or or or Or something …… -
Java – cannot use multiple ebean databases in play 2
We are using play framework 2.0 3 set up a slightly complex project We need to access several databases (pre-existing)…… -
Calculate the distance between two vectors of different lengths
There are different ways to calculate the distance between two vectors of the same length: Euclid, Manhattan, Hamming …… -
Java – use bitwise and in if statements
In C, I can write an IF statement if (firstInt & 1) But when I try to perform the same operation in Java, the comp…… -
Why is timeunit Java util. Members of concurrent?
Java's timeunit enumeration is useful for many different tasks related to time, not just concurrency; And other time r…… -
Java – JPA onetoone bidirectional
I have two entity classes with @ onetoone relationships The example code is as follows: public class A { @Id private i…… -
Java – when to select JMS API through UDP socket API and vice versa?
It can motivate programmers to use the Java JMS (Java Message Service) API instead of Java in distributed Java applica…… -
Natural language processing solution in Java
See English answer > is there a good natural language processing library [closed] 3 Solution The two popular I know…… -
Java – why doesn’t Maven generate project reports?
This is Maven 3.0 I am creating a new project: mvn archetype:create Then I create a file site / site xml： <project…… -
Java – even with wrapper classes, swingworker exceptions are lost
I have been trying to solve the usability problem of swingworker. It will throw any exception in the background task, …… -
Java – migrate to Tomcat 8: instancealreadyexistsexception data source
I have a question about the context configuration in Tomcat 8 I migrated the project from Tomcat 7 to Tomcat 8, and th…… -
Java – why does the attribute change listener instead of observable
I had problems with class design until I found observability (using the observer design pattern) and created a small a…… -
Java – jarscan, which scans all jar files of a specific class in all subfolders
We are seeing an older version of the class being used, although we have the latest deployment To scan all jar files i…… -
How to delete data using sets in Magento ORM?
Now I'm deleting data $deleteCCL = Mage::getModel('crossdata/customccitem'); $deleteCCL->load($itemId); $delete…… -
Java – spring: exception start filter springsecurityfilterchain
I'm using spring 3.1 Write an application with 2 - release The app server is Tomcat 7 This is my profile: web.xml <…… -
Java – why is setname in the thread class assigned to a character array? Why not a string?
When I deal with the thread concept in Java, I have seen thread Java source file I noticed that the setname () method …… -
Java – how to implement concurrent HashMap using the functions in LinkedHashMap?
I have used LinkedHashMap and accessorder true, and allow up to 500 entries to be used as LRU cache of data at any tim…… -
Java – view the cache of headers and footers in the list view
You can add a list view to a header and footer view Cache these views? edit Consider a layout of such content (essenti…… -
Java – change the child order of SWT composite
In my case, I have two sashform children, but the problem applies to all composites class MainWindow { Sashform sa…… -
What is the meaning of the question mark in angle brackets? Extend Java lang.Comparable>
In the App Engine, according to the Javadoc, the gettyperank method has this signature: public static int getTypeRank(…… -
Get string size in Java (no graphics object available)
I'm trying to write an application that needs to draw many strings using the graphics2d class in Java I need to get th…… -
Java – how to redirect AWS SDK log output
Even if I'm using logback and configuring it, I keep getting stdout I can't get AWS out of the console Jun 19,2014 3:4…… -
Java – how to track row indexes after JTable has been sorted by users?
I have a JTable with the first line blank Now, when I sort the columns by clicking on the column, the blank row is at …… -
Audio / video capture in phonegap / Cordova using external Java plug-ins
I am developing an Android application using phonegap / Cordova and JavaScript I want to use an external Java plug-in ……