I was surprised to see in the Java source that System.arraycopy is a native method.
Of course the reason is because it's faster. But what native tricks is the code able to employ that make it faster?
Why not just loop over the original array and copy each pointer to the new array - surely this isn't that slow and cumbersome?
Thanks,
-James
Hi all,
I have a Java app that has an icon in the system tray.
How can I check if the tray (or tray icon) has current focus?
Tray and TrayIcon don't seem to have .isFocused() or similar.
Is this possible?
Thanks!
Hi i just like to know is there any open source data mining software written in java that is approximately less than 3k lines of codes?
If yes, please give download link
i need to do software testing
thank you.
Hi!
So i'm writing a WebService in Java that should receive a file as an input, and then the WebService does some processing on that file, and finally it should send a new file to the client.
My question is :
How do I send a file to the client? (and how can I tell them to upload one).
Thanks for the help
Does java have a built-in method to compare precedence of two operators? For example, if I have a char '/' and a char '+' is there a method I can call that compares the two and returns true/false if the first is greater than the second (e.g. true)?
JavaMail requires that you specify an external SMTP server when sending mail. I want to have my java app send email directly without having to use an external SMTP server such as postfix or sendmail.
Can anyone recommend a library which provides this kind of functionality?
Ive done some googling and have come up with nothing.
Anyone know of a good library to invoke powershell scripts from within Java? I'm currently spawning a seperate process (powershell.exe) and then parse the output, but it would really be nice if I can leverage Powershell's 'power' by getting objects back from a powershell call.
Edit:
Otherwise, anyone else doing such interop? What method do you use?
My Java desktop application includes a component for communicating with a web service.
We therefore need to include the access details for it within the application, but do not want it to be easily accessible in the event that the code is decompiled (we will be obfuscating).
What techniques can we use to secure these details?
I want to track the face using web camera in java.
How to do this? can any one tell me the way or else the link on which i can get the information about this?
I'm trying to handle an FileNotFoundException in Java by suspending the thread for x seconds and rereading the file. The idea behind this is to edit properties during runtime.
The problem is that the programm simply terminates. Any idea how to realize this solution?
What is the event handler in Java (using net beans, Swing) that resembles the Paint in C#?
The event which shall be fired when the form is restored, resized ... etc
What's the simplest way of printing an array of primitives or of objects in Java? Here are some example inputs and outputs:
int[] intArray = new int[] {1, 2, 3, 4, 5};
//output: [1, 2, 3, 4, 5]
String[] strArray = new String[] {"John", "Mary", "Bob"};
//output: [John, Mary, Bob]
what is the best OCR package you've used with java?
I need to parse mainly numbers in a single font and am looking for a well architected, lite weight library to use.
thanks.
Friends, I am trying to convert DO to DTO using java and looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same.
I'm coding a software on java and i almost finished, i would like to know how can we create a trial version which work for example for 30 days, because i will to send it to some companies
so how to make it like shareware or trialware, also can we block access to the .class in the jar file?
Thank you
A simple question: what is the more efficient way to access a db in Java/JDBC?
I'm a web developper and I'd like to write some reusable and scalable code.
What can you suggest?
In VB.NET there is the WITH command that lets you omit an object name and only access the methods and properties needed. For example:
With foo
.bar()
.reset(true)
myVar = .getName()
End With
Is there any such syntax within Java?
Thanks!
I want to add days in a date to get a new date in java. How to achieve it using the Calender class. Gregorian calender.
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.
greetings, today i have started to learn java using netbeans ide.
i would like my jframe to display an icon as stated in the following:
setIconImage(Toolkit.getDefaultToolkit().getImage("SartreIcon.jpg"));
the questin is under netbeans ide.. exactly in which folder do i place the graphic in question in order to load it?
thanks.
Hello,
I'm working on a project and need a simple free java HTML wysiwyg editor can anyone point me in the right direction?.
It only has a small space to fit into, so something fairly simple would be best.
Thanks for the help!
I am looking for a open source library in Java for HTML Microsoft Word conversion. I have found many tools for Word to HTML conversion but not too many for converse.
As we use "default" keyword as a access specifier, and it can be used in switch statements as well with complete different purpose, So i was curious that is there any other keywords in java which can be used in more then one purposes