I am looking for a easy to use library in java that can convert a video into arrays(corresponding to frames). Arrays will be used for frame processing with standard algos like GMM
I have a string which is fed into the query as IN clause,which looks like this ('ACT','INACT') which is one of the parameters to a function inside a package.when a call is made to the function from java,
it looks like this
call package.function(1,2,3,('ACT','INACT'),4,5).
When the package is called,i get error as wrong type of arguments.
It is taking the values inside brackets as different values delimited by strings
In python I can construct a HTML string without worrying about escaping special characters like < or " by simply enclosing the string in triple quotes like:
html_string = """
<html>
<body>
<p>My text with "quotes" and whatnot!<p>
</body>
</html>
"""
Is there a similar way to do this in Java?
In Java I'm trying to test for a null value, from a ResultSet, where the column is being cast to a primitive int type.
int iVal;
ResultSet rs = magicallyAppearingStmt.executeQuery(query);
if (rs.next()) {
if (rs.getObject("ID_PARENT") != null && !rs.wasNull()) {
iVal = rs.getInt("ID_PARENT");
}
}
From the code fragment above, is there a better way to do this, and I assume that the second wasNull() test is redundant?
Educate us, and Thanks
I'm trying to install the Java Enterprise Edition 6 on my workstation. I downloaded the installer from the Sun website. Whenever I get to the option in the installer "JDK Selection" I'm told to manually select a JDK. I gave it my path (C:\IBM\rad7\jdk\), and was told it is invalid. What do I need to do to successfully install JEE6?
Im just wondering how i use xmlencoder to serialize ArrayList where foo is my own made class.
Do i have to do anything in particular, ie define my own xml structure first and then call toString on each value in my list and write it out?
Can anyone point me to a good tutorial? http://java.sun.com/products/jfc/tsc/articles/persistence4/ Thats what i have been looking at but it doesnt seem to mention what to do with non library classes.
Thanks
Is there a good way to remove HTML from a Java string? A simple regex like
replaceAll("\\<.*?>","")
will work, but things like
&
wont be converted correctly and non-HTML between the two angle brackets will be removed (ie the .*? in the regex will disappear).
Should a future release of Java deprecate the use of raw types to force the migration to generics? I could also see having raw types not allowed by default but allowing them via a compile flag for legacy code.
How can I assign this string in a Java String?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
thanks
Hi everyone,
I have a double number like 223.45654543434 and I need to show it like 0.223x10E-3
for example,
how can I do it in java????????
URGENT!!!!!!!!!!!
thanks!
Can any one let me where the memory leaks can happen when we are developing Java based application.
I am aware of Database but apart from that, is there any other possible ways .
Please list the scenarios
I want to add days to a date to get a new date in Java. How to achieve it using the Calender class.
Calender dom = new GregorianCalender(d, m y);
is the instance of my date of manufacture and I want to reach to date of expiry adding some 100 days to the current date and store it in doe but unable to do that.
Any help would be appreciable.
I am trying to print a double value in my java code. but it is printing in matissa and exponent format which I dont want to. ie
for example:
instead of printing 1234567 it is printing 1.234567E6
how to avoid that.
Today I was browsing through some question on this site and I found mention of enum being used in singleton pattern and that there are some thread safety benefits to such solution.
I never used enums and I have been programing in java for more than couple a years now. And apparently they changed a lot and now they even do full blown support of OOP within them selfs.
Now why and what for should I used enum in day to day programing?
Hi,
I want to develop phone dialer application, the app is to use modem to dial phone numbers and play voice messages .
which java api is to be used,other wise is their opensource IVR paltform to serve that ?
Per the title, do you find the default Java logging framework sufficient for your needs?
Do you use alternative logging services such as log4j or others? If so, why?
I'd like to hear any advice you have regarding logging requirements in different types of projects, and when integrating frameworks is actually necessary and/or useful.
Is there a third party library to detect the use of a Java 1.5 library when compiling with a 1.5 compiler with -source 1.4 and -target 1.4? I could use a 1.4 rt.jar in the bootclasspath however I hope there is a better way. To be used, for example, to fail the compile/build if a newer library is used.
hi,
when I write a new text file in Java, I get these characters at the beginning of the file:
¨Ìt
This is the code:
public static void writeMAP(String filename, Object object) throws IOException {
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(filename));
oos.writeObject(object);
oos.close();
}
thanks
Hi , I am trying to play a .wav file with java. I need it when a button is pressed to play a short beep sound. I have google it but most of the code wasn't working. Can someone give me a simple code to play a .wav file.
I'd like to ask another question how to handle Windows' events in Java. To be specific, I'd like to know how to handle events such as mouse moved or mouse clicked in Windows XP and Vista. I want to wire my own custom behavior in my application to these events, even when my application is inactive or otherwise hidden.
All help is appreciated!
I am building a web application, in Java, where i want the whole screenshot of the webpage, if i give the URL of the webpage as input.
The basic idea i have is to capture the display buffer of the rendering component..I have no idea of how to do it..
plz help..
Hi All,
We have a system which performs a 'coarse search' by invoking an interface on another system which returns a set of Java objects. Once we have received the search results I need to be able to further filter the resulting Java objects based on certain criteria describing the state of the attributes (e.g. from the initial objects return all objects where x.y z && a.b == c).
The criteria used to filter the set of objects each time is partially user configurable, by this I mean that users will be able to select the values and ranges to match on but the attributes they can pick from will be a fixed set.
The data sets are likely to contain <= 10,000 objects for each search. The search will be executed manually by the application user base probably no more than 2000 times a day (approx). It's probably worth mentioning that all the objects in the result set are known domain object classes which have Hibernate and JPA annotations describing their structure and relationship.
Off the top of my head I can think of 3 ways of doing this:
For each search persist the initial result set objects in our database, then use Hibernate to re-query them using the finer grained criteria.
Use an in-memory Database (such as hsqldb?) to query and refine the initial result set.
Write some custom code which iterates the initial result set and pulls out the desired records.
Option 1 seems to involve a lot of toing and froing across a network to a physical Database (Oracle 10g) which might result in a lot of network and disk activity. It would also require the results from each search to be isolated from other result sets to ensure that different searches don't interfere with each other.
Option 2 seems like a good idea in principle as it would allow me to do the finer query in memory and would not require the persistence of result data which would only be discarded after the search was complete. Gut feeling is that this could be pretty performant too but might result in larger memory overheads (which is fine as we can be pretty flexible on the amount of memory our JVM gets).
Option 3 could be very performant but is something I would like to avoid as any code we write would require such careful testing that the time taken to acheive something flexible and robust enough would probably be prohibitive.
I don't have time to prototype all 3 ideas so I am looking for comments people may have on the 3 options above, plus any further ideas I have not considered, to help me decide which idea might be most suitable. I'm currently leaning toward option 2 (in memory database) so would be keen to hear from people with experience of querying POJOs in memory too.
Hopefully I have described the situation in enough detail but don't hesitate to ask if any further information is required to better understand the scenario.
Cheers,
Edd
I was wondering if it's possible to have a java package setup using a different subversion repository than the rest. Ideally, I would probably go with a different library project, but in the case of BlackBerry, the 3rd party library linking does not work well, so I would like to just separate my UI package into a different repository than the rest so that I can control the UI better for different OS versions, but leave all the other packages the same.
Is this possible?
I have a java.util.Set<City> cities and I need to add cities to this set in 2 ways:
By adding individual city (with the help of cities.add(city) method call)
By adding another set of cities to this set (with the help of cities.addAll(anotherCitiesSet) method call)
But the problem in second approach is that i don't know whether there were any duplicate cities in the anotherCitiesSet.
I want to do some processing whenever a duplicate entry is tried to be entered in thecities set.