I have a neural network written in Java which uses a sigmoid transfer function defined as follows:
private static double sigmoid(double x)
{
return 1 / (1 + Math.exp(-x));
}
and this is called many times during training and computation using the network. Is there any way of speeding this up? It's not that it's slow, it's just that it is used a lot, so a small optimisation here would be a big overall gain.
I read a lot of blogs and see people all the time talking about bad things in the java programming language; a lot of them are about annotations and generics that were added to the language in 1.5 release. What are the things in the language or the API that you don't like or would design differently?
I use joomla to build php websites as it has logins , registrations and many extension to make my work easier.
IS some cms available for building webistes in java with some pre loaded features so that i don't have to code it from scratch
I've just made a program with Eclipse that takes a really long time to execute. It's taking even longer because it's loading my CPU to 25% only (I'm assuming that is because I'm using a quad-core and the program is only using one core). Is there any way to make the program use all 4 cores to max it out? Javais supposed to be natively multi-threaded, so I don't understand why it would only use 25%.
How to use .xml file in applet coding?
I want to save some context in .xml file in java-applet programming.....
I want to make the changes in that file through coding.
how to do this?
Hi
There are several PHP or js code formatting libs out there -- does anyone know if similar libs exist in Java?
Ie., Given a string of code, return a formatted string with syntax colouring etc.
It'd be ideal if it auto detected the language, but I might be pushing my luck there...
Are there exists an simple AMPQ server/broker implementation written in Java?
I need it only for local integration tests, starting it from ant/maven, and i don't need any features like a clustering, persistence, performance and so on. Just a fake RabbitMQ-like instance, without installation (just as a dependency at maven pom) and configuration.
Is there a way to access the Java Plug-in Control Panel programatically? Or at least find the places in the Windows File System where the information backing that control panel is stored?
Hi, would it be possible to bind a Java application to a Cocoa graphical interface?
I'm working in Eclipse right now, on my mac, and am wondering if Interface Builder could be used to construct a new interface so that I don't have to look at Swing all day.
Any ideas/suggestions? Thanks!
as we "No keyword should be used as an Identifier in java". But there will be some words like asser or enum or any other which have been added as keyword in version 1.4, 1.5 resp. So if any older version code is used to compile with new javac, what happens if that code contains these words as an identifier?
I have the following source code
public class mod_MyMod extends BaseMod
public String Version()
{
return "1.2_02";
}
public void AddRecipes(CraftingManager recipes)
{
recipes.addRecipe(new ItemStack(Item.diamond), new Object[] {
"#", Character.valueOf('#'), Block.dirt
});
}
When I try to compile it I get the following error:
java:11: reached end of file while parsing }
What am I doing wrong? Any help appreciated.
what is the use of concurrent hash map in java? where we have to use this? what are the comforts in it? help please. how it works? sample codes are easy to understandable..
As I remember there is a magic command line option in Java that turn on writing of operations that are currently executed to console. The output was looked like byte code. I do not mean -verbose, because it prints only class loading, while this option outputs information like memory allocation etc.
Hi
I have written an chat application in java, now I like to update my application whenever user registers my chat application I should get a sms on my cell.
I am not getting how should I start with messaging service. Let me know any ideas or links.
Thanks
Which CMS are you using in Java and what is your experience with it (in terms of extensibility, usage comfort, framework API, memory usage, performance etc.). I am looking for suggestions.
When I use the annotation:
@XmlRootElement(name="RootElement", namespace="namespace")
class RootElement {
to create xml file from java, it creates the root element as:
<ns2:RootElement xmlns:ns2="namespace">
but I wanted to create without the "ns2", like:
<RootElement xmlns="namespace">
Any idea how to fix it?
Reletad link (example I used to create the xml):
http://www.java2s.com/Code/JavaAPI/javax.xml.bind.annotation/XmlRootElementname.htm
Java's jar file format builds off of the zip file format, and supports compression of the class files inside it. When and how does the JVM decide which class files to uncompress and pull out of the jars on its classpath? Is the process dynamic and done at runtime as classes are needed, or are they all uncompressed up front before the program actually runs?
I have a big XML which contains around 300 elements. I need to modify 2 or 3 elements in this xml using Java. I don't want to go for conventional marshalling and unmarshalling as it involves the parsing of the whole XML. How is XPath/XSLT manipulation? I know that I can easily read the data but i need to modify the same and put in back in the same XML. The primary concern here is performance. Kindly advise
I need to implement a cache solution in javafor a cluster of 9 servers with web applications. I saw apache JCS, seems old, do you know another open source solution ?
thanks