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• how to take user input in Array using java?

  - by sadia

  how to take user input in Array using Java? i.e we are not initializing it by ourself in our program but the user is going to give its value.. please guide!!

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• How to create an array, array list, array stack and array 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?

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• How can I get client side information using either Javascript or Java Servlets?

  - by reply2viveksshah

  How can I get client side information using either Javascript or Java Servlets? Client side information such as client's computer name, its IP Address etc. Thanks in advance.

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• How to convert a Java Long to byte[] for Cassandra?

  - by dfrankow

  Lazy programmer alert. :) Cassandra stores column values as bytes (Java example). Specifying a LongType comparator compares those bytes as a long. I want the value of a long into a Cassandra-friendly byte[]. How? I poked around for awhile. I think you people can help me faster.

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• How to open html file in default browser from Java Swing application?

  - by kovike

  My Java Swing application generates html file and I want to open it with default browser when it is generated and saved. How to achieve that?

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• Is there any way to use javaw with JNI instead of java?

  - by Xinus

  I am using JNI to initialize classes in my jar files present at the classpath. But created executable uses java and displays ugly command prompt when my program starts. I want to configure my JNI to use javaw instead. How can I achieve it? Platform: Windows 7

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• What is an instance in Java ? Confused between instance and object

  - by happysoul

  Are they same ? Came across this line when reading about Java's main method's signature "String args[ ] declares a parameter named args, which is an array of instances of the class String. Objects of type String store character strings."

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• How do you merge two input streams in Java?

  - by J. Pablo Fernández

  Having two InputStreams in Java, is there a way to merge them so you end with one InputStream that gives you the output of both streams? How?

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• Best way to get the highest sum from a Matrix (using Java but algorithm is the issue here)

  - by user294896

  Sorry I dont know the correct terminology to use but I have a 3x3 matrix like this 1 3 4 5 4 5 2 2 5 and I want get the highest score by picking a value from each row/column but I cant pick the same row or column more than once , so the answer in this case is 3 + 5 + 5 = 13 (row0,col1 + row1,col0 + row2,col2) 4 + 5 + 5 = 14 is not allowed because would have picked two values from col2 I'm using Java, and typically the matrix would be 15 by 15 in size. Is there a name for what Im trying to do, and whats the algorithm thanks Paul

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• Is there anything like Enumerable.Range(x,y) in Java?

  - by Simon

  Hello there. Is there something like C#/.NET's IEnumerable<int> range = Enumerable.Range(0, 100); //.NET in Java?

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• What is the best way to create a debugging web page for a computation in Java?

  - by Shooshpanchick

  I'm developing a website that uses some complex computations (NLP-related). My customer wants to have "debugging" webpages for some of these computations where he can run them with arbitrary input and see all the intermediate results that occur during computation. Before this request all of the computations were encapsulated in beans and intermediate results were logged into general log. What is the best way to capture all these results on Java level to render them as webpage?

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• Tutorial how to create a CXF web service from existing Java code and embed it in Tomcat

  - by EugeneP

  Do you know a tutorial how to create a CXF web service from existing Java code and embed it in Tomcat, and also generate a wsdl file so that any .NET system would be able to generate client code easily? I miss that WSDL creation point in, for example this http://www.ibm.com/developerworks/library/ws-pojo-springcxf/ tutorial. No wsdl file is generated. But still it should be present in my case to provide system interoperability.

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• Is there a way to make eclipse report a general "catch (Exception e)" as an error/warning (in java)?

  - by Rog

  I'm trying to encourage a best practice of not catching general exceptions in Java code. eg: try { ... } catch (Exception e) { // bad! ... } Is there a way to flag this as an error/warning in Eclipse? I know PMD picks this up, but I'd rather avoid integrating it into everyone's build environment at the moment.

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• Do I need a semaphore for my thread in Android/Java?

  - by Henrik

  Hello all, When running a thread in Android/Java: public void run() { while (running) { if (moreTasksToExec()) { task = getNextTask() task.exec(); } } } Is it OK to let it run and not using a semaphore to block while no work needs to be executed? I am only using one thread, so I need no inter-thread synchronization.

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• How do I make vim indent java annotations correctly?

  - by wds

  When indenting java code with annotations, vim insists on indenting like this: @Test public void ... I want the annotation to be in the same column as the method definition but I can't seem to find a way to tell vim to do that, except maybe using an indent expression but I'm not sure if I can use that together with regular cindent. edit: The filetype plugin was already turned on I just got a bit confused about indenting plugins. The accepted answer may be a bit hackish but works for me as well.

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• is there a dictionary i can download for java?

  - by David

  is there a dictionary i can download for java? i want to have a program that takes a few random letters and sees if they can be rearanged into a real word by checking them against the dictionary

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• How I can Optimize this mySQL transaction within java code?

  - by worldpython

  Dear All, I am new to MySql database. I've large table(ID,...). I select ID frequently with java code and.And that make a heavy load on transaction select from tableName where ID=someID notes: 1.Database could be 100,000 records 2.I can't cache result 3.ID is a primary key 4.I try to optimize time needed to return result from query. Any ideas for optimization ? thanks in advance

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• Java: how to clone ArrayList but also clone its items?

  - by palig

  Hello, How can I clone Array List but also clone its items in Java 1.5? For example I have: ArrayList<Dog> dogs = getDogs(); ArrayList<Dog> clonedList = ....something to do with dogs.... And I would expect that objects in clonedList are not the same as in dogs list. Thanks for any answer!

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• Could extra imports in Java slow down code loading time?

  - by Spines

  Is it possible that adding more import statements to your java code could slow down the time it takes to load your classes into the JVM?

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• How to enforce a 5-minute per post rule in a session object in Java?

  - by John

  I'm trying to figure out how to enforce a 5 minute per post/action rule. I'm developing a web application with Wicket in Java and I've got a session class which I was planning on using to keep track of these timers on a per-user basis. I wasn't planning on storing the timestamp in a database. public boolean isAllowedToPost() { if(null OR has 5 minutes passed since last post) { // set the new timestamp return true; } else { return false; } }

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• How to convert a scala.List to a java.util.List?

  - by Alex Baranosky

  I'm trying to use some Scala code and am having a hard time figuring out how to convert the Scala lists into standard Java lists. Any ideas?

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• Does anyone know of a good guide to configure GC in Java?

  - by evilpenguin

  I'm having trouble with a JVM running an app, whose heap memory looks like a comb. It's constantly jumping from 1.5 GB to 3 GB and slowly deteriorating to higher values. I'm using G1 GC algorithm, but have no idea how to configure it. I do not have access to the code of the app I'm running and, needless to say, it's a rather large app. So, bottom line, does anyone know of a good guide to configure GC in Java?

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• Are there any way to apply regexp in java ignoring letter case?

  - by Roman

  Simple example: we have string "Some sample string Of Text". And I want to filter out all stop words (i.e. "some" and "of") but I don't want to change letter case of other words which should be retained. If letter case was unimportant I would do this: str.toLowerCase().replaceAll ("a|the|of|some|any", ""); Is there an "ignore case" solution with regular expressions in java?

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• How do I get the set of all letters in Java/Clojure?

  - by Jason Baker

  In Python, I can do this: >>> import string >>> string.letters 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' Is there any way to do something similar in Clojure (apart from copying and pasting the above characters somewhere)? I looked through both the Clojure standard library and the java standard library and couldn't find it.

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• how to add a xml document to another xml document in java.

  - by Jagadesh

  I have a xml document like this rootXMLDoc=<root></root> . I need to insert paramxmlDoc= <parameter par='1'>abc</parameter>. how to insert paramxmlDoc to rootXMLDoc in java.?

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