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• Invoking powershell from Java

  - by Hannes de Jager

  Anyone know of a good library to invoke powershell scripts from within Java? I'm currently spawning a seperate process (powershell.exe) and then parse the output, but it would really be nice if I can leverage Powershell's 'power' by getting objects back from a powershell call. Edit: Otherwise, anyone else doing such interop? What method do you use?

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• What is the right data type for calculations in Java

  - by Raju

  Should we use double or BigDecimal for calculations in Java? How much is the overhead in terms of performance for BigDecimal as compared to double?

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• How to retry opening a properties file in Java

  - by Hoggy

  I'm trying to handle an FileNotFoundException in Java by suspending the thread for x seconds and rereading the file. The idea behind this is to edit properties during runtime. The problem is that the programm simply terminates. Any idea how to realize this solution?

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• data mining open source software in java

  - by pat

  Hi i just like to know is there any open source data mining software written in java that is approximately less than 3k lines of codes? If yes, please give download link i need to do software testing thank you.

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• Java Operator Precedence Comparison

  - by Andrew

  Does java have a built-in method to compare precedence of two operators? For example, if I have a char '/' and a char '+' is there a method I can call that compares the two and returns true/false if the first is greater than the second (e.g. true)?

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• What is "Paint" event handler in Java?

  - by Ahmad Farid

  What is the event handler in Java (using net beans, Swing) that resembles the Paint in C#? The event which shall be fired when the form is restored, resized ... etc

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• How to create a trial version of a Java program

  - by tuxou

  I'm coding a software on java and i almost finished, i would like to know how can we create a trial version which work for example for 30 days, because i will to send it to some companies so how to make it like shareware or trialware, also can we block access to the .class in the jar file? Thank you

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• Check if system tray focused in Java?

  - by Danny King

  Hi all, I have a Java app that has an icon in the system tray. How can I check if the tray (or tray icon) has current focus? Tray and TrayIcon don't seem to have .isFocused() or similar. Is this possible? Thanks!

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• return type of main in java

  - by girinie

  Hi I like to know why only void return type for main method in java. public static void main(String [] args) Why there is no other return types other than void for main method. Thanks

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• how to build dynamically a Java classpath in Perl

  - by joe

  For Example in shell script : _CLASSPATH =. for jar in lib/*.jar do _CLASSPATH=${_CLASSPATH}:${jar} done how to build dynamically a Java classpath in Perl ?

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• any tool for java object to object mapping ?

  - by Ravi Nikam

  Friends, I am trying to convert DO to DTO using java and looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same.

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• Preventing call of a private constructor from within the class in java

  - by code_pro

  Hi We can resrict the creation of object of a class by making it's constructor private. But this constructor could still be called from within the class. is there anyway to prevent this in Java? Thnx.

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• How to receive/send files with a java Webservice

  - by Moons

  Hi! So i'm writing a WebService in Java that should receive a file as an input, and then the WebService does some processing on that file, and finally it should send a new file to the client. My question is : How do I send a file to the client? (and how can I tell them to upload one). Thanks for the help

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• regex for date in java

  - by sahmed

  Hi , can someone help me what would be the regular expression in java for the string "Feb. 26, 2009 8:08 AM PST"????

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• WITH statement in Java

  - by Mike Clark

  In VB.NET there is the WITH command that lets you omit an object name and only access the methods and properties needed. For example: With foo .bar() .reset(true) myVar = .getName() End With Is there any such syntax within Java? Thanks!

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• Sending mail from a java app without using an external SMTP server

  - by Andrew

  JavaMail requires that you specify an external SMTP server when sending mail. I want to have my java app send email directly without having to use an external SMTP server such as postfix or sendmail. Can anyone recommend a library which provides this kind of functionality? Ive done some googling and have come up with nothing.

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• Way to track the face in Java.

  - by chetans

  I want to track the face using web camera in java. How to do this? can any one tell me the way or else the link on which i can get the information about this?

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• reserved words in java

  - by abson

  goto is a reserved word in java. Is it true? Why so?

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• Securing username/password embedded in Java Desktop App

  - by William

  My Java desktop application includes a component for communicating with a web service. We therefore need to include the access details for it within the application, but do not want it to be easily accessible in the event that the code is decompiled (we will be obfuscating). What techniques can we use to secure these details?

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• Java efficent strategy to access a DB

  - by user279481

  A simple question: what is the more efficient way to access a db in Java/JDBC? I'm a web developper and I'd like to write some reusable and scalable code. What can you suggest?

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• how to add to dates in java??

  - by terrific

  I want to add days in a date to get a new date in java. How to achieve it using the Calender class. Gregorian calender. Calender dom = new GregorianCalender(d, m y); is the instance of my date of manufacture and I want to reach to Date of Expiry adding some 100 days to the current date and store it in doe but unable to do that. Any help would be appreciable.

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• what is java exception?

  - by Stupid_medankia

  What is java exception? Is an exception considered an error? When should I throw exceptions? How many kind of exceptions?

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• Simplest way to print an array in Java

  - by Alex Spurling

  What's the simplest way of printing an array of primitives or of objects in Java? Here are some example inputs and outputs: int[] intArray = new int[] {1, 2, 3, 4, 5}; //output: [1, 2, 3, 4, 5] String[] strArray = new String[] {"John", "Mary", "Bob"}; //output: [John, Mary, Bob]

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• How many ways a java Program can end ?

  - by Frank

  I know use System.exit(0) can end a java program, for instance, if I have a JFrame window, it will close and end the program, but I wonder how many other ways, can it be closed and the program be ended ? Including when an error occurs, will the program be shut down and the JFrame be closed ?

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• Java OCR package

  - by pstanton

  what is the best OCR package you've used with java? I need to parse mainly numbers in a single font and am looking for a well architected, lite weight library to use. thanks.

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