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• How to save Map object in Java to MySQL database

  - by Christian

  I have a Java Map (out of Strings and Ints) object that I want to save to a database. Is there a standard way to go about this task? Is there a way to compress the Map to take less space on the harddrive?

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• Method name collision in interface implementation - Java

  - by Bhaskar

  If I have two interfaces , both quite different in their purposes , but with same method signature , how do I make a class implement both without being forced to write a single method that serves for the both the interfaces and writing some convoluted logic in the method implementation that checks for which type of object the call is being made and invoke proper code ? In C# , this is overcome by what is called as explicit interface implementation. Is there any equivalent way in Java ?

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• Datagram Transport Layer Security (DTLS) on Android/Java

  - by Soumya Simanta

  Hi, Has anyone used DTLS on Android or is there is an open source Java implementation that supports DTLS? What are my other options for securing UDP traffic on Android ? Thanks.

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• hashmap in java

  - by Codenotguru

  i have a hashmap where every key has many values(stored in a arraylist). How to display the arraylist i.e the values for a particular key in a hashmap in java??

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• Wanted: a very simple java RegExp API

  - by itsadok

  I'm tired of writing Pattern p = Pattern.compile(... Matcher m = p.matcher(str); if (m.find()) { ... Over and over again in my code. I was going to write a helper class to make it neater, but I then I wondered: is there a library that tries to provide a simpler facade for Regular Expressions in Java? I'm thinking something in the style of commons-lang and Guava.

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• Java language philosophy question

  - by BlessedKey

  Why was java defined such that methods may take as input multiple parameters, but may only return a single object (or void)? Did it make the language somehow easier to implement or use?

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• Audio fingerprinting library (java)

  - by Claudiu

  Are there any audio fingerprinting libraries written in Java? similar to libofa which was written in C++ or C#. Thanks.

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• Need to validate a scientific spreadsheet written in Java

  - by geejay

  I need a validation framework, for an app written in Java, Eclipse RCP. The UI is a simple spreadsheet with many input fields and many output fields. The user input needs to be validated, for example: Thresholds for numerical fields Required fields for certain operations Context-sensitive help based on the validation results Multi-field validation, e.g a field is valid depending upon the values in other fields Wondering if there is anything out there?

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• How one extends JNA interface mappings? (Java)

  - by rukoche

  User32 interface (platform library) is missing some WinAPI functions, so I tried extending it: package myapp import com.sun.jna.platform.win32.W32API public interface User32 extends com.sun.jna.platform.win32.User32 { myapp.User32 INSTANCE boolean IsWindow(W32API.HWND hWnd) } But then calling myapp.User32.INSTANCE.FindWindow(..) results in java.lang.NullPointerException: Cannot invoke method FindWindow() on null object

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• use regex for get values java

  - by zahir

  i want to how to get separate text from group of contents in java.. example String a = "area href=\"hai.com\" jkjfkjs </area> ndkjfkjsdfj dfjkdsjfl jkdf dljflsd fljdf kd;fsd a href=\"hoo.com\" sdf</a> jisdjfi jdojfis joij"; i would like to get href link only.. how to write regex.. thanks and advance

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• Task Queue Java API

  - by user268515

  Hi what is the purpose of Task Queue Java API How it is works and where it should be Used... Please Help me... Regards, Sharun.

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• java memory management

  - by pavlos

  i have the following code snapshot: public void getResults( String expression, String collection ){ ReferenceList list; Vector lists = new Vector(); list = invertedIndex.get( 1 )//invertedIndex is class member lists.add(list); } when the method is finished, i supose that the local objects ( list, lists) are "destroyed". Can you tell if the memory occupied by list stored in invertedIndex is released as well? Or does java allocate new memory for list when assigning list = invertedIndex.get( 1 );

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• Parallel Extensions Equivalent in Java

  - by peter.newhook

  I have some experience using parallel extensions in .Net development, but I was looking at doing some work in Java that would benefit from an easy to use parallelism library. Does the JVM offer any comparable tools to parallel-extensions?

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• Java focus question

  - by Albinoswordfish

  This may be a silly question I don't know. Is there a way to remove the highlighter to represent focus in a Java GUI? For example when you click on a button the text will have a slight rectangle around the text. Thank you

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• BPEL and Java web service

  - by tonyaccetta

  I was asked to create, with Netbeans (glassfish), a Java Web service asynchronos that communicates with a external BPEL process.Is it possible? Can someone help me? give me some examples? thanks sorry for my English, I am Italian.

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• Developing websites using Google Sites API in Java and Eclipse

  - by sharun

  Hi, Actually my work is, I want to create a simple site using java programming. After search i came to know about google sites api, and i got all sample programs for google sites creation, But i dont know where to place the coding in Eclipse 3.5. Help me.

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• shutdown handler on java

  - by Stas

  Hi! Is it possible make some handler that will do something when user shutdown computer with Java on Windows XP (optional, win7)? How? Thanks.

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• Java and switch case

  - by Abhi

  Does any one know as to why Java does not allow you to switch on numbers larger than integers? Is there any technical reason behind this?

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• How to get IPaddress from domain name in java

  - by giri

  HI I am writing an application where I need IP address. I have domain name, but I like to know hoe to get IP address from domain name. For ex www.girionjava.com how to get IP address of this by programming in java. Thanks

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• Window application in Java

  - by Naimur

  Can i create a stand alone window application in eclipse using java, which later can be convert into an .exe file? please help me regarding this issue

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• JSON schema validation using java

  - by tomdee

  I'm writing some acceptance tests for a java webapp that returns JSON objects. I would like to verify that the JSON returned validates against a schema. Can anyone suggest any tools for this?

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• Scrape data from HTML pages using Java, output to database

  - by Tanith

  I need to know how to create a scraper (in Java) to gather data from HTML pages and output to a database...do not have a clue where to start so any information you can give me on this would be great. Also, you can't be too basic or simple here...thanks :)

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• Wikipedia : Java library to remove wikipedia text markup removal

  - by Algorist

  Hi, I downloaded wikipedia dump and now want to remove the wikipedia markup in the contents of each page. I tried writing regular expressions but they are too many to handle. I found a python library but I need a java library because, I want to integrate into my code. Thank you.

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• Java libraries for converting xsd to bean/objects

  - by wuntee

  What are my options for libraries to convert XSD files to java beans or objects? I have a large XSD that I have been trying to convert using JAXB2, but JAXB2 is creating invalid classes.

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• Error when using Java String split

  - by Dan Howard

  HI All, I've been using the basic split for a while - where I just parse out a string into an array based on a simple token like " " or ",". So of course a customer tries this: \\.br\ which fails miserably. I need to parse to an array of lines. The string for example looks like this: "LINE 1\\.br\\LINE 2\\.br\\LINE 3\\.br\\LINE 4\\.br\\" and this fails with java.util.regex.PatternSyntaxException: Unexpected internal error. Any ideas?

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