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.
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?
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?
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 :)
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?
What regular expression using java could be used to filter out dashes '-' and open close round brackets from a string representing phone numbers...
so that (234) 887-9999 should give 2348879999
and similarly 234-887-9999 should give 2348879999.
Thanks,
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 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'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?
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 ?
a difficult one..
using classes of primitive types in java, like Integer, Float, Long, etc, write a code fragment using a method to double the value of a variable passed as an argument
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 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?
Dear all,
I wan to read a file and then write using java.nio and return it to servlet.i also want to check whether file has been downloaded or not.plz suggest.
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.
MyClass.class and MyClass.getClass() both seem to return a java.lang.Class. Is there a subtle distinction or can they be used interchangeably? Also, is MyClass.class a public property of the superclass Class class? (I know this exists but can't seem to find any mention of it in the javadocs)
I'm a beginner and I want to write Java code in eclipse. This program takes two LinkedLists of integers (for example, a and b) and makes a LinkedList (for example d) in which every element is the sum of elements from a and b. However, I can't add these two elements from a and b because they are Objects
Example:
a=[3,4,6,7,8]
b=[4,3,7,5,3,2,1]
------
d=[7,7,13,12,11,2,1]
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.
Hi,
I am developing an Eclipse Plugin. I want to add my custom Task Tag programmatically within the plugin. (Lets say DOTHIS) Later, i want to list the lines marked with DOTHIS tag in my custom taskView
I know that it is done using the Eclipse UI from Project Properties Java Compiler Task Tags New. and then in the task view by Configure Contents but how can i do these arranegments within the plugin?
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.