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• How to determine if a List is sorted in Java?

  - by FarmBoy

  I would like a method that takes a List<T> where T implements Comparable and returns true or false depending on whether the list is sorted or not. What is the best way to implement this in Java? It's obvious that generics and wildcards are meant to be able to handle such things easily, but I'm getting all tangled up. It would also be nice to have an analogous method to check if the list is in reverse order.

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• how to remove the <br/> using regex in java?

  - by androidbase Praveen

  how to get value without <br/> tag using regex n java? my String is: <Div> West Newton, MA 02465 <br/>USA </Div> output should be like: West Newton, MA 02465 USA How?

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• How to detect and replace non-printable characters in a string using Java ?

  - by Frank

  For instance I have a string like this : abc123[*]xyz[#]098[~]f9e [*] , [#] and [~] represents 3 different non-printable characters. How can I replace them with "X" in Java ? Frank

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• How to increment a java String through all the possibilities?

  - by dacracot

  I need to increment a String in java from "aaaaaaaa" to "aaaaaab" to "aaaaaac" up through the alphabet, then eventually to "aaaaaaba" to "aaaaaabb" etc. etc. Is there a trick for this?

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• Can I put java code inside the .jrxml (jasperreport)?

  - by spderosso

  Hi, Can I put java code inside the .jrxml? For example, I want to put an if() or a "new ..()" Is it possible? How? Thanks

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• What is the difference between serialization and synchronization in java?

  - by androidbase Praveen

  What is the difference between serialization and synchronization in java? I need an explanation or a tutorial.

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• Java Google App Engine Datastore: 'IN' operator available on JDO query filters, as with Python?

  - by Jim Blackler

  This page describes an 'IN' operator that can be used in GAE Datastore to compare a field against a list of possible matches, not just a single value: However this is for Python. In Java (App Engine 1.2.5), trying query.setFilter("someField IN param"); on my javax.jdo.query fires a JDOUserException 'Portion of expression could not be parsed: IN param'. Is there a way this can be done?

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• What are the best ways to convert MS word file to image or pdf preferably using java?

  - by Vaibhav Kamble

  I want to convert MS word formatted documents to images and pdf. I am well versed with Java. I was looking for apis using which I can do the same. Can anyone please point me to that ? If you know the best alternatives even though they are for other languages , please update me about that.

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• Which logger framework in java shall one use based on performance and consistency criterion?

  - by Vaibhav Kamble

  Which logger framework in java shall one use based on performance and consistency criterion? I need to use it in highly concurrent application and do not wish to use any log wrappers. Please suggest based on these requirements. -Vaibhav

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• How to retrieve forbidden characters for filenames, in Java?

  - by Gnoupi

  There are some restricted characters (and even full filenames, in Windows), for file and directory names. This other question covers them already. Is there a way, in Java, to retrieve this list of forbidden characters, which would be depending on the system (a bit like retrieving the line breaker chars)? Or can I only put the list myself, checking for the system?

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• What is a simple way to get ACID transactions with persistence on the local file system (in Java)?

  - by T.R.

  I'm working on a small (java) project where a website needs to maintain a (preferably comma-separated) list of registered e-mail addresses, nothing else, and be able to check if an address is in the list. I have no control over the hosting or the server's lack of database support. Prevayler seemed a good solution, but the website is a ghost town, with example code missing from just about everywhere it's supposed to be, so I'm a little wary. What other options are recommended for such a task?

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• How to get UTF-8 working in java webapps?

  - by kosoant

  I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ??? for special cases. My setup is the following: Development encironment: Windows XP Production encironment: Debian Database used: MySQL 5.x Users mainly use Firefox2 but also Opera 9.x, FF3, IE7 and Google Chrome are used to access the site. How to achieve this?

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• What's a good library for parsing mathematical expressions in java?

  - by CSharperWithJava

  I'm an Android Developer and as part of my next app I will need to evaluate a large variety of user created mathematical expressions and equations. I am looking for a good java library that is lightweight and can evaluate mathematical expressions using user defined variables and constants, trig and exponential functions, etc. I've looked around and Jep seems to be popular, but I would like to hear more suggestions, especially from people who have used these libraries before.

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• How to refresh external Jars in eclipse project (Java)?

  - by user299535

  Hi all, I have a java project in Eclipse which includes a couple of external jar files. These external jar files are being rebuilt through a different process (not eclipse, ant). Those changes are not being reflected on the eclipse project even if I refresh the project. If I close the project and reopen, it works. Any suggestions on how I could expedite the project without having to close and reopen? Thanks, Praveen.

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• Is it possible to develop IPhone applications with Java?

  - by Wing C. Chen

  I accidentally bumped into an ad like this: http://monotouch.net/DownloadTrial?ref=so1. Then I start to wonder if we have an equivalent thing in Java. From my understanding, objective c is still the only language that people use to develop iPhone apps. Is this true?

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• How can i combine crystal reports and JAVA SWT?

  - by Armin

  I have to create reports from my application (java, swt). For reports i am using crystal reports, but i have problem, i can't find SWT code that enables me to open (create) and save report. I have found Swing code that enables me to do that, but i cant find SWT code. So can somebody explain me, or give me code, or tutorial that will help me to to that. Tnx.

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• How to delete only the content of a file in java?

  - by Santhosh

  hi, May i please know how can i delete the content of the file in java? Thanks in advance.

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• How to create an Array, ArrayList, Stack and Queue in Java?

  - by theband

  I was reading a Java article, but found no differences in the declaration and was confused over. Can anyone list me out this? Added the Article http://www.theparticle.com/javadata2.html

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• How do I apply the for-each loop to every character in a String in Java?

  - by oxinabox.ucc.asn.au

  So I want to iterate for each character in a string. So I thought: for (char c : "xyz") but I get a compiler error: StackCharTester.java:20: foreach not applicable to expression type How can I do this?

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• Best location to put your CSS and JS files in a Mavenized Java Web app?

  - by MexicanHacker

  I have a Web application in maven that follows this structure: src `-- main |-- java |-- resources `-- webapp Is is better to put it in the main folder and then the maven plug in will try to move it or I should put it inside the webapp folder and why?

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• What files should be added to SVN in an eclipse Java project?

  - by Jake Petroules

  I have a Java project I'd like to commit to my SVN repository, created with eclipse. Now, what files (aside from the source code, obviously) are necessary? In the workspace root, there is a .settings folder with many files and subfolders, and inside the project folder there are two files - .classpath and .project, and another .settings folder with a single file - org.eclipse.jdt.core.prefs. Which of these files should be committed to SVN and which can be safely excluded?

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• Java - is it possible to read a file line by line, stop, and then immediately start reading bytes wh

  - by hatorade

  I'm having an issue trying to parse the ascii part of a file, and once I hit the end tag, IMMEDIATELY start reading in the bytes from that point on. Everything I know in Java to read off a line or a whole word creates a buffer, which ruins any chance of getting the bytes immediately following my stop point. Is the only way to do this read in byte-by-byte, find new-lines, reconstruct everything prior to the new-line, see if it's my end tag, and go from there?

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• I have to implement Encryption using 3DES in java . I am new to it. Please suggest

  - by Erick

  I have to implement 3DES encryption using 3DES in java. As I am new to this. Could you please suggest and provide good samples to proceed.

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• Why is the synchronized keyword in Java called 'synchronized' instead of the more precise 'mutex'?

  - by Edward D'Souza

  I've heard that choosing to use the word 'synchronized' to describe mutexed statements is simply a mistake in Java, but I'm wondering if there is actually a reason behind the choice.

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• Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in java

  - by girinie

  Hi I like to know difference between the following in java System.exit(0); System.exit(-1); System.exit(1); When do I have to use the above code appropriately. Thanks

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