How do I use XMLStreamWriter to write exactly what I put in? For instance, if I create script tag and fill it with javascript I don't want all my single quotes coming out as '
I recently acquired a Metrologic Barcode scanner (USB port), as everyone already knows it works as a keyboard emulator out of the box.
How do I configure the scanner and my application so that my app can process the barcode data directly? That is, I don't want the user to focus on a "Text field" and then process the data when the KeyPress event fires.
I jsut learned that
A class may be declared with the
modifier public, in which case that
class is visible to all classes
everywhere. If a class has no modifier
(the default, also known as
package-private), it is visible only
within its own package.
This is a clear statement. But this information interfere with my understanding of importing of packages (which easily can be wrong). I thought that importing a package I make classes from the imported package visible to the importing class.
So, how does it work? Are public classes visible to all classes everywhere under condition that the package containing the public class is imported? Or there is not such a condition? What about the package-private classes? They are invisible no mater if the containing package was imported or not?
ADDED:
It seems to me that I got 2 answers which are marked as good (up-voted) and which contradict eachother.
I'm looking to create a new app from scratch and will probably use Spring MVC and possibly Spring Web Flow. The projects created by Spring Roo use Spring MVC and optionally Web Flow. What are some good alternatives for view technology, or is JSP with spring and jstl taglibs and jquery the way to go?
I was writing two implementations of a linked list for an assignment, a doubly linked list and a circular doubly linked list. Now as the class representing a Link within the linked list is the same in both implementations, I want to use it in both.
Now I wonder which approach would be better:
Implement the Link class as a package private static member class in the first implementation and then use this class in the second implementation or make the Link class a package private class.
This question is not about 'best' barcode library recommendation, we use various products on different platforms, and need a simple way to verify if a given barcode is correct (according to its specification).
There are some free online bar code generators in the Internet, and I found many differences between their output and our library output regarding graphics and text field below the code. Now I am not sure which one is wrong, and before filing bug report I want to make sure how the correct barcode should look like.
We mainly need Code128 and UCC/EAN-128 with A/B/C subcodes. Which resource would you suggest?
I'm developing a few custom ant tasks that all need to initialize the same objects. I wanted to initialize those object's in a common superclass that extends from Task, in the init() method. But I see from the lifecycle of an ant task that init() gets called before the tasks child elements and attributes are set. So all of the data I need for initializing those objects is unavailable during init(), if I am reading right.
So, why is init() called at this point? What do you even know that you could use in init()? What could it be used for?
(And is there some other method that I can rely on to be called before execute(), but after my data is available?)
Hi,
I'd like to know if it is "ok" to write a test without any "assert" in it. So the test would fail only when an exception / error has occured.
Eg: like a test which has a simple select query, to ensure that the database configuration is right. So when I change some db-configuration, I re-run this test and check if the configuration is right. ?
Thanks!
I need to design an application that protects some data in a database against root attack. It means, that even if the aggressor takes control over the machine where data is stored or machine with the application server, he can't read some business critical data from the database. This is a customer's requirement.
I'm going to encrypt data with some assymetric algorithm and I need some good ideas, where to store private keys, so that data is secure as well as the application usability was quite comfortable? We can assume, for simplicity, that only one key pair is used.
hello i am a student and i am doing my senior project it is about developing an application in j2me for scanning a barcode and extract the number of the barcode in a message to be send.
please i search the net but i cant found something usefull i am new at j2me if someone could help me with sourch code and how to create it i will be very thankfull my email is [email protected]
thanks in advanced
I want to learn how to create distributed application environments and web services using spring, aspectj, hibernate, etc. rather than EJBs.
Can anyone recommend a book or set of books that can help me (a single all-in-one book would be preferable)?
Also, any advice regarding learning/creating distributed app environments and web services is appreciated.
I'm building an application where space is at a premium. I'd really like to use JAXB's unmarshalling capabilities, but including the whole library is out of the question. Has anyone paired it down so that only the bits needed for unmarshalling are included?
I'm using Hibernate3.2+Websphere6.0+struts1.3..
After deploying ,application works fine.
After some idle time ,i will get this type of error repeatedly,am not able to login at all.
Im not using any connection pooling. i feel after idle time its not able to connect to the database again..if i restart the server everything works fine for some time...after that same story.. please help me out
Hi,
I want to write a buil.xml file that should open a new terminal for every client/server i want to use for testings.
How can i do that? i tried this code to run for example the 'ls' command on the newly created terminal. He created the terminal but doesn't run the cmd.
thanks.
I have noticed from several web pages that apparently Spring 3.0 supports @Inject from JSR-330. As we would really like to use JSR-299 syntax for dependency injection in our libraries for both web apps and stand-alone applications, and have alternatives to Weld, it would be nice if Spring could do this.
Being a novice to Spring, I tried downloading the Spring Framework distribution and put all jars on the Eclipse build path. No Inject annotation so my existing test project using Weld did not compile.
Can this be done with Spring? What do I need to do to get it running?
(I am aware that Guice eventually will support this too. It is only in SVN for now, and if there is an official Spring release which can, that would be better.)
Hi.
For some reason I need to enter my integer values to database as string, then I want to run a query on them and compare those integers as strings. Is there any way to beautify integer numbers (between 1 and 1 US billion as an example) so I can compare them as strings?
Thanks in advance.
I'm working on a Serpinski triangle program that asks the user for the levels of triangles to draw. In the interests of idiot-proofing my program, I put this in:
Scanner input= new Scanner(System.in);
System.out.println(msg);
try {
level= input.nextInt();
} catch (Exception e) {
System.out.print(warning);
//restart main method
}
Is it possible, if the user punches in a letter or symbol, to restart the main method after the exception has been caught?
I am looking for a way to ensure that my text field (JTextField, JFormattedTextField) is returning a double or int rather than a string when I call .getText(). What is the best way to do this (if possible)?
Thanks!
badPanda :D
I have tried to write an Android application with an activity that should be launched from a different application. It is not a content provider, just an app with a gui that should not be listed among the installed applications. I have tried the code examples here and it seems to be quite easy to launch existing providers and so on, but I fail to figure out how to just write a "hidden" app and launch it from a different one.
The basic use case is:
App A is a normal apk launchable from the application list.
App B is a different apk with known package and activity names, but is is not visible or launchable from the application list.
App A launches app B using the package and class names (or perhaps a URI constructed from these?).
I fail in the third step. Is it possible to do this?
Hello,
I have just started using Drools on a small project and now I need to write a rule a bit complex and I don't really know what's the best way to do it.
I am applying this rule to a list of objects of the same type (this class have a property called numberOfExecutions). I need to check for each element of the list if the numberOfExecutions of that element is bigger than 5% of the total numberOfExecutions (the sum of numberOfExecutions of all the elements in the list).
I could not think of a nice way to implement this in drools so far, do you have a suggestion?
I've got a number of tasks/servlets that are hitting the HardDeadlineExceededError which is leaving everything hanging in an 'still executing' state.
The work being done can easily exceed the 29 second threshold.
I try to catch the DeadlineExceededException and base Exception in order to save the exit
state but neither of these exception handlers are being caught...
Is there a way to determine which tasks are in the queue or currently executing?
Are there any other strategies for dealing with this situation?