Java
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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 …… -
Generating patterns from entities using JPA2 hibernate eclipse 4.2 MySQL 5.5
I'm new to hibernate / JPA, and I insist it's the last step Solution If you are using hibernate, you can: >Set "hib…… -
Why does this exceed the 65535 byte limit in Java constructors and static initializers?
Disclaimer: I realize that I can generate this at Java runtime. When testing some code, I need a very special case I f…… -
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 – 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 – converts a byte array containing ASCII characters to a string
I have a byte array consisting of ASCII characters that I want to convert to a string For example: byte[] myByteArray …… -
Java – how to improve my JUnit test
My JUnit test looks like a long story: >I create 4 users > I delete 1 user > I try to log in with the deleted…… -
Java – use GlassFish / Metro to simulate the problem of WCF secure web server
I'm trying to build a GlassFish hosted web service (for development and testing) and a WCF hosted web service I have t…… -
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 – 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, …… -
Packaged Java applications run faster in Windows XP compatibility mode
According to some of my customers, Java applications run faster in Windows XP compatibility mode of Windows 7, but why…… -
Java – BlackBerry browser return Click
After loading the browser, I want to go back to the previous page, but it takes three clicks I tried to override the b…… -
Java – how to implement batch processing using mybatis / spring?
I want to know how to use mybatis 3& amp; Spring 3? For example, this is what is being done now: spring. xml： <…… -
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 – 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 – nullpointer exception in LinkedList when using for each loop
I encountered very strange Java behavior. I don't know whether it is a bug or not The code simply passes through the s…… -
Create a unique timestamp in Java
I need to create a timestamp (in milliseconds) in Java that is guaranteed to be unique in this particular VM instance …… -
Java – if called in the synchronization method, thread. Will yield() lose the lock of the object?
I understand thread currentThread(). Yield () is a notification thread scheduler that can assign CPU loops to other th…… -
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 …… -
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 – how do I subclass ByteBuffer?
Therefore, the Java NiO architect does not create a ByteBuffer interface, but a ByteBuffer class. It is not a final cl…… -
Java – why does the following code compile without errors?
I am new to Java and try to understand the following The length of the array is different The code still executes with…… -
Java error when combining Lambdas and multiple catch clauses?
import java.io.*; import java.io.*; import java.net.*; public class Test { …… -
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 – 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…… -
Java – the deleted entity is passed to the persistent exception
I have such entities: I'm just trying to delete a file, such as entitymanager Remove (file); However, an error occurre…… -
What is the preferred way to get the frame rate of a JavaFX application?
This is a very simple question: What is the preferred way to get the frame rate of a JavaFX application? Google showed…… -
Java – stop horizontal scrolling in jtextarea
I want to add a jtextarea to an application Typically, textarea contains a lot of content and displays horizontal and …… -
Java – hashcode and equals are collections unmodifiableCollection()
Collections class has some static help methods to provide read-only views of various collection types, such as unmodif…… -
. Net – f#int.maxvalue is “not a valid constant expression”, but system Int32. What is maxvalue?
TL; Dr: the f# compiler interprets int as int operator in this context, such as determined by Eugene fotin and expande…… -
Java – what is the best free plug-in for eclipse that allows formatting / indenting / cleaning JSP code?
I know IntelliJ has an option to select all the code in the JSP file, right-click and select format This formats all H…… -
Java – handshake failure – supernatural closing error when debugging Solr in Intellij
So I'm going to debug my Solr filter plug-in on IntelliJ Community Edition Then I run the program from the comand prom……