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  • Best beginner programming language?

    - by mtwisterr
    I want to learn a simple language so I can code simple things maybe eventually a game but I don't know where to start. I can code simple things using apple script but you can't do that much with that and it only works on macs. I have a mac and a dell so something that I could code and run on both would be nice. Also all my school offers is java so if you have any ideas on how to learn the language that would be appreciated. Thanks

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  • jdbc connection pooling

    - by llm
    Can anybody provide examples or links on how to establish a JDBC connection pool? From searching google I see many different ways of doing this and it is rather confusing. Ultimately I need the code to return a java.sql.Connection object, but I am having trouble getting started..any suggestions welcome.

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  • Class Cast Exception

    - by iaagty
    why do i get this exception? Map myHash = null myHash = (HashMap)Collections.synchronizedMap(new HashMap()); If i try to use this hashmap, i get java.lang.ClassCastException

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  • RegEx Advanced : Positive lookbehind

    - by mpneuried
    This is my test-string: <img rel="{objectid:498,newobject:1,fileid:338}" width="80" height="60" align="left" src="../../../../files/jpg1/Desert1.jpg" alt="" /> I want to get each of the JSON formed Elements inbetween the rel attribute. It's working for the first element (objectid). Here is my ReqEx, which works fine: (?<=(rel="\{objectid:))\d+(?=[,|\}]) But i want to do somthing like this, which doesn't work: (?<=(rel="\{.*objectid:))\d+(?=[,|\}]) So i can parse every element of the search string. I'm using Java-ReqEx

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  • How to group a database write and spreadsheet write in single "transaction"

    - by WhyGeeEx
    I have a Java program that writes results to both a DB (SQL Server) and a spreadsheet (POI), and it would be best if neither is written to if there's an error with either. It would be a lot worse if the spreadsheet was produced and then an error happened while saving to the DB, so I'm doing the DB-write first. Even so, I'm wondering if someone knows of a way to guarantee they both succeed or fail as a unit. Thanks!

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  • Write a PLIST file in Groovy

    - by Joe Cannatti
    I have a Groovy application for Windows and am trying to convert a Hash object to an Apple plist file. What is the best way to go about this? Seems like this is something that must already be solved in Java but I can't seem to find any examples. Thanks in advance

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  • how to develop complete software suite/platform ?

    - by fwfwfw
    here's an example of a company selling complete software suite/platform www.ql2.com/technology/platform.php i wonder how are such suite/platforms developped ? do you have to use J2EE ? i am more interested in how this company is able to produce their own proprietary WebQL language. www.automationanywhere.com/products/AAServer.htm is another similar company selling "servers"....how are such proprietary servers developped with Java technology ?

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  • Send Mail through Jsp page.

    - by sourabhtaletiya
    hi friends ,i have tried alot to send mail via jsp page but i am not succeded. A error is coming javax.servlet.ServletException: 530 5.7.0 Must issue a STARTTLS command first. x1sm5029316wbx.19 <html> <head> <title>JSP JavaMail Example </title> </head> <body> <%@ page import="java.util.*" %> <%@ page import="javax.mail.*" %> <%@ page import="javax.mail.internet.*" %> <%@ page import="javax.activation.*" %> <% java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); Properties props = System.getProperties(); props.put("mail.smtp.starttls.enable","true"); props.put("mail.smtp.starttls.required","true"); String host = "smtp.gmail.com"; String to = request.getParameter("to"); String from = request.getParameter("from"); String subject = request.getParameter("subject"); String messageText = request.getParameter("body"); boolean sessionDebug = false; props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.transport.protocol", "smtp"); props.put("mail.smtp.port", "25"); props.put("mail.smtp.auth", "true"); props.put("mail.debug", "true"); props.put("mail.smtp.socketFactory.port","25"); props.put("mail.smtp.starttls.enable","true"); Session mailSession = Session.getDefaultInstance(props, null); mailSession.setDebug(sessionDebug); Message msg = new MimeMessage(mailSession); props.put("mail.smtp.starttls.enable","true"); msg.setFrom(new InternetAddress(from)); InternetAddress[] address = {new InternetAddress(to)}; msg.setRecipients(Message.RecipientType.TO, address); msg.setSubject(subject); msg.setSentDate(new Date()); msg.setText(messageText); props.put("mail.smtp.starttls.enable","true"); Transport tr = mailSession.getTransport("smtp"); tr.connect(host, "sourabh.web7", "june251989"); msg.saveChanges(); // don't forget this props.put("mail.smtp.starttls.enable","true"); tr.sendMessage(msg, msg.getAllRecipients()); tr.close(); // Transport.send(msg); /* out.println("Mail was sent to " + to); out.println(" from " + from); out.println(" using host " + host + ".");*/ %> </table> </body> </html>

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  • cached data base

    - by radi
    hi , in my project i need a tow tables each of it has about 2000 row , i want my application to be speed so my db should load into memory (cached) when the app start and before it close the db have to be saved on the disk . i am using java and i want to use sql

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  • Ant hangs randomly with executing

    - by deltamatrix
    Hi, I have noticed in recent times that when invoking my ant scripts to build and unit test my Java app, it randomly hangs at various points in the execution. The ant scripts are been invoked from my local machine on my remote clearcase view. Has anyone else had this problem? Please advise if you can.

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  • Categorize the approximate shape of an array of Points in 3D Space

    - by user1295133
    I have a set of points in 3d space and I want to be able to categorize the shape that best fits them - cube, sphere, cylinder, planar (flat) etc. I've looked at supervised/machine learning but since I need first generate a large training data set that's not really suitable. My dream solution would be a java library with a wonderful magical function something like : public enum ShapeType { CUBE, SPHERE, CYLINDER, PLANAR } public ShapeType CategorizeShapeFromPoints( 3DPoint[] points ) However, any and all help will be appreciated. Thanks

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  • No Secure Random Number Generators Available in JDK

    - by rwbutler
    Hi, I am currently running JDK 6 on Windows 7 and have installed the Unlimited Strength Policy Files. I wrote a Java app some time ago which used to work but now fails, giving an error message indicating that the SHA1PRNG SecureRandom is not available. I have tried printing a list of cryptographic providers available on the platform and it would appear that there are no secure random number generators available - does anyone have any idea why this might be? Many thanks in advance for your help!

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  • User Session Management with Spring

    - by Chris
    I am developing a flex java - spring web app and have set up the business logic using hibernate. I want to maintain sessions so that when the user logs in , i can track the logged in user to display information that is related to the username. I want to do this using spring if possible and wondered if anyone could redirect me to a tutorial or even explain the method to which this is achieved , or if it is hard to achieve. Thanks Chris

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  • How to create a custom Annotation and processing it using APT ?

    - by Dhana
    Hi, I'm new to Java Annotation. I know how to create custom annotation but I don't know how to process that Annotation to generate the dynamic code just like ejb 3.0 and hibernate does. I read some articles based on APT but no one gives the details about how to process the Annotation. Are there any tutorials with sample code for processing custom Annotations? Thanks

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  • Jar Store - prevent from copying

    - by Vladimir
    We are going to create Jar Store the way like App Store works, but for Java Developers. Everyone will able to submit and sell custom .jar library which solves some little problem, but solves it very good to save other developer's work time. The only undecided question is how to prevent .jar copying or publishing bought .jar to the Net.

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  • Is possible to make sexy GUI with javaFX & swing ?

    - by phmr
    I would like to do a "sexy" / user-friendly / appealing GUI in java. Swing is a limited in terms of "skin" customisation. I'm thinking about JavaFX but I don't it yet, what can I achieve with this technology ? how hard is it ? do you have examples of real-life examples of Swing/JavaFX integration ? I would like to do something in this spirit of this, which is built on the .NET framework: original link: http://www.patrickpayet.com/net/?p=329

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  • Getting an error on a webservice call from C#

    - by ooo
    i am calling a java webservice from C#. i generate the wdsl proxy through visual studio which works fine and i see the methods. etc. I have one issue where i get this error in one of the requests: org.xml.sax.SAXException: No object was found for class type class com.ml.ets.ease.analytics.soap.Request does anyone have any idea why i might be getting this error.

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