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• Assertion in Java?

  - by Praveen Chandrasekaran

  what is assert keyword in java? tell me some real time example to understand the key role of the assertion's need?

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• Extending a Java Swing class in Clojure

  - by mikera

  I'm trying to extend a Java Swing component in Clojure, i.e. I want to extend a javax.swing.JComponent and add some custom methods implemented in pure Clojure in addition to all the standard inherited methods. I've tried using "proxy" which works great if I just want a single instance (in the same way as an anonymous inner class). However I'd really like a named class so that I can generate an arbitrary number of instances. What's the recommended way of doing this?

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• Getting started with parser in java code

  - by giri

  Hi I am noob to parsers.I like to fetch specific data from a website I need to use parsers for that. Can anybody please tel me how to get started with parsers.What do I need to download? Can anybody the code to fetch the data from a website using parsers in java. Thanks in advance.

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• How to send a file over a network using socket channel in java

  - by sunil

  I want to write a socket channel program using which I can send a file from the client program to the server program. I want to create this program using Java. Is there any other on-line help is available So how to overcome this problem. Thanks Sunil Kumar Sahoo

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• performSelectorOnMainThread equivalent in Java for Android

  - by Daniel A. White

  I have an iPhone application and I am porting it over to Android. I have a service/controller that spawns new threads to perform some network tasks. I use performSelectorOnMainThread in my iPhone app. How can I have my Java app do the same or similar thing?

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• java database backup and restore

  - by jawath

  How do I backup / restore any kind of databases inside my java application to flate files.Are there any tools framework available to backup database to flat file like CSV, XML, or secure encrypted file, or restore from csv or xml files to databases, it should be also capable of dumping table vise restore and backup also.

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• this["var"+"name"] in java

  - by Maxim

  In AS3 I can write this["foo"] for acces to varible foo. I can construct any string in brackets. Is there a way to do this in Java?

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• C++ / Java Textbook [closed]

  - by hkf

  Possible Duplicate: The Definitive C++ Book Guide and List What is the best text book a beginner (non-CS major) can buy to master C++? And for Java? Thanks

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• Java - Regular expression question

  - by Jacob

  I am new to regular expressions. I want to use java's replaceAll() function to replace any CSS comments in a string. Basically I want to use regex to search for anything that is surrounded by "/*" and "*/" and replace it with "".

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• Getting scp's status bar to appear in a Java window

  - by pete

  I'm writing a program that uses scp to copy files in a bigger java program. As it stands now, the program freezes up while the scp is copying the file, which can take a few minutes, so I'd like to be able to display the progress of the scp or at the very least get the terminal window with the scp progress to show up! Any suggestions?

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• What are the things Java got wrong?

  - by Alon

  I read a lot of blogs and see people all the time talking about bad things in the java programming language; a lot of them are about annotations and generics that were added to the language in 1.5 release. What are the things in the language or the API that you don't like or would design differently?

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• Find a complete word in a string java

  - by Shekhar

  Hello, I am writing a piece of code in which i have to find only complete words for example if i have String str = "today is tuesday"; and i am searching for "t" then i should not find any word. Can anybody tell how can i write such a program in java?

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• Java Compare Addresses

  - by Tom

  Hi, Does anyone know a library to compare addresses in Java ? Something that would give equality on addresses, written in different ways. For example, it should recognize that "22 Acacia Avenue" and "22 acacia av." is the same address. Of course, this can escalate a lot, that's why i'm asking. Thanks in advance.

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• Expanding Java Memory-Mapped Byte Buffer

  - by geeko

  Greetings All, Is there a way to expand the Java memory-mapped byte buffer such that the new size is reflected back to the mapped file on disk ? Thank you !

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• Is it worth learning C# or Java in 2010

  - by Dhawal

  We are in web era standalone applications are almost gone everyone wants their internet application to run inside browser, programming languages like Ruby, Python and scala are becoming more and more mainstream. Sometimes I wonder what these programming language offer which make them top choice of IT companies, if I plan to become a freelance web developer is it worth learning C# or Java. I read beginner's book for both of them, but to master any of them require some time investment.

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• Which CMS should i use for building website in java

  - by Mirage

  I use joomla to build php websites as it has logins , registrations and many extension to make my work easier. IS some cms available for building webistes in java with some pre loaded features so that i don't have to code it from scratch

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• Refreshing data in a java.sql.ResultSet

  - by llm

  I have a java.sql.ResultSet object containg data from a query that was run. How do I refresh the data in the ResultSet to reflect the current data in the database? Thanks!

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• Validating input using java.util.Scanner [closed]

  - by bhavna raghuvanshi

  I'm taking user input from System.in using a java.util.Scanner. I need to validate the input for things like: It must be a non-negative number It must be an alphabetical letter ...etc What's the best way to do this?

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• Convert a byte into a boolean array of length 4 in Java

  - by Agrajag9

  I need to convert a byte into an array of 4 booleans in Java. How might I go about this?

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• What is the best way to modify a few fields in an XML using Java

  - by Kailas J C

  I have a big XML which contains around 300 elements. I need to modify 2 or 3 elements in this xml using Java. I don't want to go for conventional marshalling and unmarshalling as it involves the parsing of the whole XML. How is XPath/XSLT manipulation? I know that I can easily read the data but i need to modify the same and put in back in the same XML. The primary concern here is performance. Kindly advise

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• How Java do the string concatenation using "+"?

  - by Tom Brito

  I read about the way Java works with += operator, using StringBuilder. Is it the same with a ("a" + "b") operation?

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• Using of xml files in java programming.

  - by chetans

  How to use .xml file in applet coding? I want to save some context in .xml file in java-applet programming..... I want to make the changes in that file through coding. how to do this?

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• sending message to my cell using Java application

  - by giri

  Hi I have written an chat application in java, now I like to update my application whenever user registers my chat application I should get a sms on my cell. I am not getting how should I start with messaging service. Let me know any ideas or links. Thanks

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• ConcurrentHashMap in Java?

  - by Praveen Chandrasekaran

  what is the use of concurrent hash map in java? where we have to use this? what are the comforts in it? help please. how it works? sample codes are easy to understandable..

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• JAVA String split on interval

  - by user2920611

  I would like to split my strings in JAVA based on a regular interval, not on regex. This is what I have to split: 1 x3.1.105.41 1 -10 2 x4.1.105.41 0 -10 3 x12.1.105.41 0 -10 4 y3.1.105.41.19 1 0 5 y4.1.105.41.21 0 0 6 y1.1.105.41.23 0 0 7 y12.1.105.41.25 0 0 I would like to seperate each column. Currently, I use the strLine.spli function Any help would be great!

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