包含标签：Java 的文章
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Java – project Euler problem #12
I have always been happy to challenge with project Euler. I noticed that my solution 12 is my slowest speed, reaching …… -
How to set a switch statement in a Java loop
I want to perform a switch in the while loop. At the break of each switch statement, the while loop stops and requires…… -
Unit tests – run JUnit tests using SBT
I have a 0.13 7 SBT project has several subprojects One of them is called webapp, which has many JUnit tests in webapp…… -
Java – unchecked exceptions will be better checked
I realize that in Java, the relative advantage between checking exceptions and unchecked exceptions is a be example di…… -
Java – OSS implementation of Google application engine?
After Google first launched map reduce, the community launched Hadoop. Is there an OSS Google App Engine project? Or, …… -
Java – code navigation in eclipse
I find it difficult to browse the code of a large project involving many classes, XML files, SQL files, etc I know shi…… -
Java – open the paradox / Borland Database as a single file
My question is: This is what I have: so it's a paradox 7 database file I'm trying the driver: http://www.hxtt.com/para…… -
Java – catch several exceptions and re throw the general exception
I'm using reflection to add some data to private variables in classes from third-party libraries There are about four …… -
Accelerating mathematical computation in Java
I have a neural network written in Java, which uses sigmoid transfer function to define as follows: private static dou…… -
Java – the comparator must override superclass methods
I'm making a treemap < < string, string >, and hope to arrange it in descending order I created the following…… -
Is there a map implementation for Java listeners?
I want a map implementation where I can add listeners for put () events What is available in standards or any third-pa…… -
java – System. Arraycopy is slow
I've been trying to measure the system arrayCopy vs Arrays. Copyof performance, in order to correctly select one of th…… -
Java – simplejdbctemplate and null parameters
I use simplejdbctemplate and mapsqlparametersource in a simple way: MapsqlParameterSource parameterSource = new Mapsql…… -
Java – hibernate cache using ehcache cluster: nonstrict for strict read and write
What is the real difference between unrestricted reading and writing and reading and writing? I can read ehcache and H…… -
Button size (Java)
I created a simple menu in Java, but I couldn't figure out how to change the size of the button I want the last button…… -
Unknown developer of Java Web start application on OS X
The Java Web start application signed on Mac OS X 10.9 blocks this message by default: "application.jnlp" can't be ope…… -
Java XOR two arrays [closed]
I have to apply one XOR two arrays as if I had the following: array_1: 1 0 1 0 1 1 array_2: 1 0 0 1 0 1 I want a funct…… -
Java webdriver: element invisible exception
I have the following questions I have a hidden drop-down list, so when I make a selection and run the test, I get the …… -
How do I type π (PI) in Java?
Is there a character in the math API that allows the character π to be represented? Solution You don't even need to us…… -
Java – with restlets, xStream annotations don’t seem to have any effect
Using @ xstreamomitfield in my POJO doesn't seem to have any impact Annotated fields are still exposed in XML or JSON …… -
Java – why is “. Concat (string)” much faster than “”?
See the English answer > string concatenation: concat() vs "+" operator11 for(int i = 0; i < 100000000L; i++) { …… -
Java – real time thread synchronization with normal threads
How to synchronize a real-time thread with a normal thread in Java? For example, real time threads that calculate cert…… -
How to handle exceptions when instantiating class objects
java version "1.7.0_45" java version "1.7.0_45" Hello I'm initializing class methods in the constructor However, the n…… -
Converting classic nested for loops using java 8 streams
See English answers > Cartesian product of streams in Java 8 as streams (using streams only) List<Card> deck …… -
Java – field lookup method of spring data repository
I have two entities, one user and one registered user The registered user has a field of type user I think there is a …… -
How do you get the mantissa of floating point numbers in Java?
I'm trying to get the mantissa of a floating point number (just for learning), but it doesn't work as expected Say the…… -
Suggestions for good java build tools are well integrated with eclipse
I work in several modules (about 10 at present) of a small team (3 people) The compilation, integration and management…… -
Java – how to use spring data to interact with elastic search aliases
Hi, I'm using elastic search for spring data The domain structure of my project is constantly changing So I have to de…… -
Java – best practices for installing third-party libraries into a hosted Maven repository?
Suppose you have a project that uses a third-party library, such as Google's Analytics data API (gdata), which does no…… -
Java – JNA catch exception
I have a quick question about handling exceptions thrown by the Library under JNA JNA receives an invalid memory acces…… -
Java – GWT and guava issues
It's hard for me to get GWT to work with guava I added guava-r09-gwt.net to my classpath Jar and < inherits name = …… -
Java – how to use the web XML contains additional configuration files
I need to define many servlets, but I don't want to use them on the web Write all configurations in XML I can define s……