Just finished reading ch23 in the excellent 'Beautiful Code' http://oreilly.com/catalog/9780596510046
on Distributed Programming with MapReduce. I understand that MapReduce is a programming system designed for large-scale data processing problems, but I have a hard time getting my head around the basic examples given and how I might apply them in real world situations.
Can someone give a simple example of MapReduce implemented using either java, javascript or actionscript?
The examples for JNI i've seen map Java native methods to implementation by C++ global functions. Is there a way to set the native methods implementation to be the member functions of a C++ object instead?
What is the correct way of knowing operating system language (locale) from java code?
I have tried
Locale.getDefault()
System.getProperties("user.language")
etc.
but they are not correct nothing actually displays the "System Locale" which is available by the command "systeminfo" in windows.
Please help.
Hi
Can anyone please tell me how to decode quoted-printable using java. Actually i am reading mail from the server and fetching some data from mail using regex.My mail content type is text/html and because of which i am getting html tags along with the data and making very difficult for me to do the pattern matching. it is showing some =20 or =cF etc like characters also.
How i can resolve this problem???
Thanks and Regards,
Shikha Virmani
I am planning on making a Java Swing application and was wondering if Swing is still used or if it has been replaced with something else.
Thanks in advance!
When I do the following in Java:
System.out.println(2.2-2.0);
It unexpectedly prints the following:
0.20000000000000018
What is this and how can I avoid this?
Hello!
How can I draw a String in Java (using Graphics2d) in monospace mode? I have a font that looks like LCD screen font, and I want to draw something like LCD label.
I am using Digital 7 Mono font.
Do you know where I can find another font that will be monospace and lcd (I wan to type only digitals)?
I am trying to dislplay a kannda character in a Java app.
String fonts[] = ge.getAvailableFontFamilyNames();
This shows that there is a font family by name "BRH Kannada"
Font f = new Font("BRH Kannada", Font.PLAIN, 20);
and then I do
button.setFont(f);
now when i set the button text, I have to ideally get the text on button to use the BRH kannada font.
However, what and how should I give the string as?
Disregarding my last post, I've found the source of the problem. I'm using
a.renameTo(b)
when b doesn't exist. The reason it doesn't exist is because there is a symbolic link so if b is "/usr/name/folder/file", then b really is "/mnt/MountTest" because the symlink is to that directory.
So the question is, is there an alternative way to rename a file in Java using a string value?
If not, how can this rename procedure be done differently?
Hi
I need a good fast, reliable (open source would be a plus) tool for Java for tracking Maintainability index and simliar code metrics to show the customer the progress of working on refactoring issues.
What would be your suggestion to apply?
Hi all,
I've been programming in Java for a few courses in the University and I have the following question:
Is it methodologically accepted that every class should implement an interface? Is it considered bad practice not to do so? Can you describe a situation where it's not a good idea to use interfaces?
Thanks.
Hi,
I found Facelift which can basically generate html headings as images (with "nice font") on the fly. Does something similar exist for Java (couldn't find one myself)?
Cheers,
stephanos
Hi!
let say i have a string like this "neverMindWhat is upneverMind" and I want to take out the What is up using regexp with JAVA. Someone told me that using matcher will be the best. Can anyone show me how to do it using Matcher?
Other solutions are welcome too!
Thanks!
Hello, I wonder if anyone can help - I have this error showing recently when debugging in eclipse - what doe it mean by resource, an imported package or the location of some java files ?
Can't find resource for bundle sun.awt.resources.awt, key AWT.EventQueueClass
MissingResourceException (id =45)
Thanks
I have an web application written in Java, and I have a thread-pool.
The application is huge, and I cannot make major changes, for example, I cannot change log4j.
I am executing a batch process in the thread pool, and I want to log everything that goes is executed to execute that process.
There will always be just one thread active in the thread pool.
Any ideas of how can I do that?
Can anyone recommend a tutorial on how to write a java servlet which connects to ms sql server and manages data?
I'm trying to write something which pulls products out of one database and inserts them into a stored procedure located on another database.
thanks in advance
I have a Java source code that I need to interrogate and apply security policies [for e.g. applying CWE]
I have couple of ideas, for starters using AST and then travel thru the tree. Others include using regular expression.
Are there any options other than AST or regex that I could use for such process.
Does anyone a good pdf library for Java ? My specific requirement is to find co-ordinates of the text in pdf file. If anyone knows, some pointers will be helpful.
I am making an installer in java swing it almost completed only one thing is left to do
that is to create desktop shortcut of our software.I do not want to copy software on desktop but I want to create instance of that software like other MS software. How it can be done
please help me.
I am already copied my software in c:/Program files by using copy directory and I want to create shortcut on desktop .
I need to create simple pagination of objects, but when I read manual I found out that query.setRange(5, 10); will fetch 10 objects, even when only 5 objects are needed.
Is there anyway to fetch just needed objects?
EDIT: I started bounty, so fi you can show me simple example code in Java that works, then I will accept you answer.
Hi guys, i'm working on GUI in java and got stuck with move the object.
Please visit this youtube video i made a short demo for you guys to see what i was trying to do. I'm so new to the GUI thing as i've never been taught of doing GUI.
Here is the link: http://www.youtube.com/watch?v=up1LV5r-NSg