Hello! I wanted to play around with the upcoming concurrency library which is going to be included in Java 7 according to this website. It seems to be named JSR166. In most places its reference implementation is referred as jsr166y, while few resources call it jsr166z. I discovered two totally different javadocs for each reference im...
We are working on a large Java program that was converted from a Forte application. During the day we are getting Blocking SPID's in the server. We had a DBA visit yesterday and he set up a profile template to run to catch the locking/blocking action. When we run this profile the blocking problem goes away. Why? This application is dist...
Does anyone know if Red Hat has forked the code you download from JBOSS.org? I'm guessing that the answer is "yes", but I'd like to confirm it. I can't pin it down at the Red Hat site, and jboss.org giving me an HTTP 502 right now for some reason. I know that Red Hat owns JBOSS. Does that mean that the code they sell in JBOSS Develo...
The application I am working on has a terribly slow loading web page. If I run the following code it works fine but only because of the call to sleep. If I don't sleep then the InputStream is just a bunch of spaces, probably due to the application it is calling from. Is there any non-hack way around this? public class PublishTool e...
This the description of the program brief: Produce a software that keeps track of courses taught by lecturers at College. For each course, a course code and title needs to be recorded, as well as a list of lecturers taking that course needs to be recorded. The system should allow courses and lecturers to be added and removed from the...
Please pardon my non-understanding here. I have a local mysql server and I need to be able to access that data over an encrypted channel from a java web application running on a web host. Can anyone recommend the best way to do this? Thank you! Joshua ...
I have an artifact which is being built and deployed in a particular way (not as a jar file). In the course of deployment, a war file is built. How can I configure the pom so that the artifact is also deployed as a jar file, to a different location? ...
I'm writing an agglomerative clustering algorithm in java and having trouble with a remove operation. It seems to always fail when the number of clusters reaches half the initial number. In the sample code below, clusters is a Collection<Collection<Integer>>. while(clusters.size() > K){ // determine smallest distance b...
This may be a bit of an easy, headesk sort of question, but my first attempt surprisingly completely failed to work. I wanted to take an array of primitive longs and turn it into a list, which I attempted to do like this: long[] input = someAPI.getSomeLongs(); List<Long> = Arrays.asList(input); //Total failure to even compile! What's...
I'm trying to build a regular expression that will detect any character that Windows does not accept as part of a file name (are these the same for other OS? I don't know, to be honest). These symbols are: \ / : * ? " | Anyway, this is what I have: [\\/:*?\"<>|] The tester over at http://gskinner.com/RegExr/ shows this to be work...
This code compiles fine in Java <= 1.4. Java 1.6 bitches and moans with the warning: "The method add(Object) belongs to the raw type Collection. References to generic type Collection should be parameterized" import org.apache.commons.collections.Buffer; import org.apache.commons.collections.BufferUtils; import org.apache.commons.collec...
Hello, I have been asking a lot of questions about a project I have been working on recently. Here is the scenario I am in and any help or point in the right direction would help a lot... This is a network program built with a server and multiple clients. Each client has a GUI which must act according to commands sent from the server. ...
How does bytecode get verified in the JVM? ...
Rational I would like to have more detailed logging debugging/logging output on a few superclasses, so the subclass name will not actually be effecting real-time performance nor application logic. I'm also of the opinion that it is fairly bad design to do this normally, however I really do want this info to be logged during development ...
I'm using the official Sybase JDBC driver to connect to a database and call a stored procedure by creating a CallableStatement, binding the parameters to it and calling .execute() on it. However, I found that no exception is thrown, even if the stored procedure fails. I can verify that the failure is propagated back to me by sniffing th...
What I'm trying to achive is basically the "Enclose in" feature of Netbeans at runtime: Let's say I have this component hierarchy: Container Label 1 Label 2 Label 3 And I want to enclose Label 2 like this: Container Label 1 Container Label 2 Label 3 And I also want to revert it, i.e. I want to "pull...
I have been searching the web, but can't find any good tutorials for getting started with JMS under Spring connecting to TIBCO EMS. Anyone can point me to a good one? ...
when i run my application i am getting an exception of javax.servlet.ServletException: org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileNotFoundException: WEB-INF\jdbc.properties (The system cannot find the path specified) org.apache.struts2.dispatcher.Dispatche...
A String representation of a double is written to and read from a file by a C# application. The C# application converts the double to a string using the following fragment: value.ToString("R", NumberFormatInfo.InvariantInfo); The C# application converts the string to a double using the following fragment double num = double.Parse(s,...
When executing some command(let's say 'x') from cmd line, I get the following message: "....Press any key to continue . . .". So it waits for user input to unblock. But when I execute the same command ('x') from java: Process p = Runtime.getRuntime().exec(cmd, null, cmdDir); // here it blocks and cannot use outputstream to write somne...