Hello, i have some pb. I want to cast a List to Collection in java
Collection<T> collection = new Collection<T>(mylList);
but i have this error
Can not instantiate the type Collection
I have an application which uses UDP connection, now when i try to run the app more than once its throwing me an exception
java.net.BindException: Address already in use: Cannot bind
but in my another app, which uses tcp connection, i can open two instance of the same app and its working fine. why this error only with UDP connection?
Hello, Im searching for ideas to solve the following problem:
I'm loading an URL (any for that matter) into an iFrame, and then block (server side) all image tags, o object tags before sending the page to the client.
--
What I was thinking to do is: fetching the URL, and then manipulating the fetched content using a Java library (any recomendation on that matter?). And after that, send the modify content to que client.
Would that be the best approach to solve this problem? suggestions are wellcome :)
How can i write 'one bit' into a file stream or file structure each time? is it possible to write to a queue and then flush it ? is it possible with c# or java?
this was needed when i try to implement an instance of Huffman codding. i can't write bits into files. so write them to a bitset and then (when compression was completed) write 8-bit piece of it each time (exclude last one).
Hi,
I was wondering if there is a way of converting a double [][] in to a float[][] in Java?
I currently have a for loop in my code that does this and am looking for a better and cleaner way.
Any ideas would be appreciated,
Thanks,
I have an Iterator that I use on a HashMap, and I save and load the iterator.
is there a way to get the previous key in the HashMap with Iterator? (java.util.Iterator)
Update
I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped.
Another update
I'm iterating through the keyset of the HashMap
Hi I am revising for an exam and need to know some implementation issues with the singleton pattern. they do not need to be too complex just basic things that would affect a developers decision to include them, Thanks
P.S. Could any code examples be given in Java thanks.
Is it possible in Java to draw shapes and stuff directly on the screen so my desktop remains visible and I can click whatever is underneath my shape? I'm using Windows XP. Thanks.
From the java sources, it look like to drops into native code. Is the cost roughly equivalent to a volatile read or does it need to acquire a lock of some type?
The compiler does not consider return
type when differentiating methods, so
you cannot declare two methods with
the same signature even if they have a
different return type.
Java Tutorial
Why is this?
Consider you have the following class
public class OuterClass {
...
private static class InnerClass {
int foo;
int bar;
}
}
I think I've read somewhere (but not the official Java Tutorial) that if I would declare the static member classes attributes private, the compiler had to generate some sort of accessor methods so that the outer class can actually access the static member class's (which is effectively a package-private top level class) attributes.
Any ideas on that?
I was wondering if there is a 'smooth way' of redeploying a Java WAR to a production server (no cluster, no OSGi)?
All I can come up with is stop server, update file, restart server. And 10 minutes beforehand I need to display a maintenance warning on the site.
What's your approach?
Hi, I hv 3 java web-apps running in jetty and i want one of them to be accessed only through localhost. I dont want to write filter. Can it be done by modifying some jetty configuration?
in java we can do this:
public class A{
public static void main(String...str){
B b = new B();
b.doSomething(this); //How I do this in c++ ? the this self reference
}
}
public class B{
public void doSomething(A a){
//Importat stuff happen here
}
}
How can I do the same but in c++, I mean the self reference of A to use the method in B ?
I'm using generics rather long time but I've never used construction like List<? super T>.
What does it mean? How to use it? How does it look after erasure?
I also wonder: is it something standard in generic programming (template programming?) or it's just a java 'invention'? Does c#, for example, allow similar constructions?
Hiya.
I have an Iterator that I use on a hashmap, and i save and load the iterator.
is there a way to get the previous key in the hashmap with Iterator? (Java.Util.Iterator)
update
I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped.
another update
I'm iteratoring through the keyset of the hashmap
Hiya.
I have an Iterator that I use on a HashMap, and i save and load the iterator.
is there a way to get the previous key in the HashMap with Iterator? (java.util.Iterator)
Update
I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped.
Another update
I'm iteratoring through the keyset of the HashMap
Hi
I am trying to compare the performance of Single and Multithreaded Java programs. Are there any single thread benchmarks which are available which I could then use and convert to their multithreaded version and compare the performance. Could anybody guide me as to what kind of programs(not very small) are suitable for this empirical comparison.
Thanks in advance
Consider the following Java class:
public class Foo
{
public static void doStuff()
{
// boring stuff here
}
}
Is it possible to access either the class literal Foo.class, or just the class name "Foo" from within a static method such as doStuff()? In a non-static method I would just call this.getClass(), but there is no this to use in a static method.
in an array first we have to find whether a desired number exists in that or not?
if, not then how will i find nearer number to the given desired number in java.
Well, I'm pretty much trying to figure out how to pull information from a webpage, and bring it into my program (in Java).
For example, if I know the exact page I want info from, for the sake of simplicity a Best Buy item page, how would I get the appropriate info I need off of that page? Like the title, price, description?
What would this process even be called? I have no idea were to even begin researching this.