Does ehcache support multi-threading by default or does it require any configuration changes? On multi threading my application with Ehcache i found that the DB hit count is actually increasing i.e. there is no global cache available for all the threads despite the fact that my cache's are all Singletons. Any suggestions? ...
I am using the following code to extract a zip file in Java. import java.io.*; import java.util.zip.*; class testZipFiles { public static void main(String[] args) { try { String filename = "C:\\zip\\includes.zip"; testZipFiles list = new testZipFiles( ); list.getZipFiles(f...
I want to use Jersey 1.1 with spring 2.5. The exact thing that i need to do is write a interface which would be exposed as the service and implementation in a class that extends the interface. I cannot do it in applicationContext.xml, maybe because the XSD has changed. Could some one provide with a sample code/snippet/file where they h...
Lets say that I have a JTextPane that is showing a HTML document. I want that, on the press of a button, the font size of the document is increased. Unfortunately this is not as easy as it seems... I found a way to change the font size of the whole document, but that means that all the text is set to the font size that I specify. What...
How can I change the default RMI port (1099). It could be as JVM parameter or via coding, it doesn´t matter. Thanks. ...
hi, I am having an db file in res/raw/folder iam calling Resources.openRawResource() with the file name as R.raw.FileName and i get an input stream but i having an another db file in device i want to copy the contents of that db to the device db i am using BufferedInputStream bi = new BufferedInputStream(is); and FileOutPutStream b...
When I compile something like this: public class MyClass { void myMethod(String name, String options, String query, String comment) { ... } } and compile this to a class file, it seems that argument names are lost. That is, when some other Java code references MyClass and wants to call or overwrite myMethod, my IDE (c...
I have a class I am not sure how to annotate properly. My goal for Holder::data: List should maintain order not by comparator but by the natural ordering of the elements in the array. (Which can be an ndx column if that is helpful.) Holder will have the only reference to data, so Cascade all is probably applicable as well. I am al...
We have an infrastructure set up where in the webservers are clustered and the application servers are not. The webservers route the request to the application servers based on round-robin policy. In this scenario, the session data available in one application server is not available in the other application server. Is there anyway by w...
Hello! I've seen a lot of examples which use getAccessibleContext().setAccessibleDescription(...) to set some "magic" description. What is the use of this description? Where can it be seen and how should it support accessibility? Why setDescription(...) is not used? Additionally, what is your opinion / experience with Java accessibil...
I am writing a C++ application which will require a block of memory (about 1000 bytes) as a temporary buffer for some text processing. The operation may be repeated up to 10,000 times a second. Could anybody confirm that it would be more expensive to allocate the memory each time I need the buffer (i.e. new with a smart pointer, memory ...
We have a large high-performance software system which consists of multiple interacting Java processes (not EJBs). Each process can be on the same machine or on a different machine. Certain events are generated in one process, and are then propagated in different ways to other processes for further processing and so on. For benchmarki...
Hi, I am trying to build a POST request to send JSON data to a server using a REST api. As the JSON code will be embedded in the request body as a request parameter value, do I need to encode the value to escape special characters like '{}[]' you typically find in JSON syntax. Is there any utility library to do that ? N. ...
does anyone know how to prevent hibernate from loading a collection or many-to-one assocation? i have a use case where i need to load an object, but the calling program can determine whether certain properties are loaded or not. the same goes for part of a collections: certain rows have to be fetched, others not. domain classes: publi...
Based on an answer I got here, I started to give commons-pool a serious look. My last experience of using it was around 2003, probably version 1.1 or 1.2. Its main user, DBCP, is considered by many as flawed and to be avoided. Does anyone uses commons pool in production to write pool of your own? What is the best pool type to use? I pl...
I'm interested in using VisualVM (running on a JDK 1.6 environment) to monitor and troubleshoot some issues with an application deployed and running on JDK 1.4 (and Tomcat 5.0). Basically, the app is hanging periodically and I am interested in seeing if I can monitor it to help find out where. The homepage for VisualVM mentions that it...
How do I set the classpath order in ant? Specifically, When I am trying to run my ant build, I need it to pick up a class in a jar (jaxws-api.jar) instead of the same class which is in the jre. I am currently setting the classpath to explicitly include those jars however it seems to still pick up the jre first. What I am looking for i...
Can someone tell me where I can find the executeable "java_swt"? I see multiple sites that say it is embedded in eclipse, and other sites say it is shipped with Mac swt drops. I have the zip file for a mac called "swt-3.5M6-carbon-macosx.zip" and i have the eclipse IDE installed on my test mac machine and windows machine. But i cannot f...
In particular, I need a way to represent a curve/spline that passes through a set of known 3D points, and a way of finding other points on the curve/spline, by subdivision/interpolation. For example, if I have a set of points P0 to PN, I want to find 100 points between P0 and P1 that are on a spline that passes through P0 and P1. I see...
I have a class that looks like this: public class UploadBean { protected UploadBean(Map<String,?> map){ //do nothing. } } To use reflection and create a object by invoking the corresponding constructor, I wrote code as follows: Class<?> parTypes[] = new Class<?>[1]; parTypes[0] = Map.class; Constructor ct = format.g...