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• add more than 30 days with Calendar's add() method in Java

  - by Haes

  Hi, I'm not quite sure what field to use when adding more than 30 days to a Java Calendar object. Is there any difference in between Calendar.DAY_OF_MONTH and Calendar.DAY_OF_YEAR? Example: GregorianCalendar d = new GregorianCalendar(); d.add(Calendar.DAY_OF_YEAR, 90); vs GregorianCalendar d = new GregorianCalendar(); d.add(Calendar.DAY_OF_MONTH, 90); Thanks.

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• Deploying java class files without restarting JBoss

  - by varunwg

  Hi, I would like to know if its possible to deploy java class files without restarting JBoss server. I am using jboss v4.2.2. Also, when I try to deploy jsp files, it works fine and server picks up the changes almost instantly. Thanks a lot in advance :)

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• Getting the size (in bytes) of the ResultSet using java code

  - by Bhaskara Krishna Mohan Potam

  How to get the size(in bytes) of the given ResultSet within the java code. Is there any direct way to find out?

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• Pass and return custom array object in ibatis and oracle in java

  - by Justin

  I've looked around for a good example of this, but I haven't run into one yet. I want to pass a custom string array from java to oracle and back, using the IBATIS framework. Does anyone have a good link to an example? I'm calling stored procs from IBATIS. Thanks

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• Java for a C programmer?

  - by Brian

  Hi, I have a lot of experience in C and Python, but I'd like to pick up some Java. I was curious if there was a "quick and dirty" guide tailored for people with previous CS background. I'd prefer free online resources but appreciate any suggestion. Thanks, Brian

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• Java configuration framework

  - by Steen

  I'm in the process of weeding out all hardcoded values in a java library and was wondering what framework would be the best (in terms of zero- or close-to-zero configuration) to handle run-time configuration? I would prefer xml-based config-files, but it's not essential. Please do only reply if you have practical experience with a framework. I'm not looking for examples, but experience... Thanks for taking the time.

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• How to launch java application from Dock, Mac

  - by Sunil Kumar Sahoo

  I have created a Java Swing application. It works fine. I have created application file (.app) for that application using jar bundler. But the main problem is that my application does not open if I click it on the Dock. I am using Mac OS. How I can launch my application by clicking on Dock Thanks Sunil Kumar Sahoo

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• Fading Indicator message in Java

  - by jtzero

  How to/What is a good library, to create a fading indicator message in Java like that of Outlook when you get a message, or Ubuntu/Gnome when you've connected to a network?

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• 3d model viewer in Flash or Java

  - by Magnetic_dud

  I want to show a box in 3d on my website, and I was thinking to do it in Flash. How I can show a 3d model? I need something very simple, it's a textured cube, no interaction required, just let the user pan and zoom. There is a 3ds viewer in flash or something like that? Java is also ok (but flash is preferred)

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• Java: Is catching exceptions asynchronous?

  - by Gabriel Šcerbák

  I am asking because if it is not, it can be abused as synchronizations mechanism. I am asking about Java.

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• How can I open a webpage and run a javascript function from a Java app

  - by Deelo55

  Hi, I would like to open a webpage and run a javascript function from within a java app. For example I would like to open the page www.mytestpage.com and run the following javascript code:document.getElementById("txtEmail").value="[email protected]";submit();void(0); This works in a browser...how can I do it programatically? Thanks!

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• Java Interger: what is faster comparison or subtraction?

  - by Vladimir

  I've found that java.lang.Ingteger implementation of compareTo method looks as follows: public int compareTo(Integer anotherInteger) { int thisVal = this.value; int anotherVal = anotherInteger.value; return (thisVal<anotherVal ? -1 : (thisVal==anotherVal ? 0 : 1)); } The question is why use comparison instead of subtraction: return thisVal - anotherVal;

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• When to use primitive and when complex types in java

  - by Gandalf StormCrow

  Hello, In which case should you use primitive types(int) or complex types(Integer)? Ex: http://stackoverflow.com/questions/2508918/why-java-compiler-does-not-like-integer-as-type-for-values-in-hashmap this example works with Integer type. Should we always use Integer as a complex type?

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• Java / Android self naming

  - by ngreenwood6

  I am about to start developing an Android application and had a question if in Java there self naming. For instance say I had a variable named dog that held the value of scruffy. Could I then create a variable named scruffy from that variable. In PHP it would be $$dog. That would make a variable with the name scruffy. If this is possible please provide example

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• Java: Cannot listen to port, BindException

  - by bguiz

  Hi, I am developing an application in Netbeans, and it is using JavaDB. I can connect to it and execute queries without issues, but for some reason, the "Output - JavaDB Database Process" pane within Netbeans keeps displaying Security manager installed using the Basic server security policy. Could not listen on port 1527 on host localhost: java.net.BindException: Address already in use How do I find out what process is already using, or bound to, that port number?

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• Suggestions for library to hash passwords in JAVA

  - by DutrowLLC

  What JAVA library should I be using to Hash passwords for storage in a database? I was hoping to just take the plain text password, add a random salt, then store the salt and the hashed password in the database. Then when a user wanted to log in, I could just take their submitted password, add the random salt from their account information, hash it and see if it equates to the stored hash password with their account information.

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• Examples of good Java desktop applications

  - by Abdullah Jibaly

  More of a wiki list/collection, I'm looking for a list of good Java desktop apps. I've added a couple below to get started. Please list the framework/widget toolkit being used if it's know as well.

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• Task queue java api

  - by user268515

  Hi i'm working in task queue concept.... First i struggled to program using task queue and i asked many doubts in stack overflow and Google app engine java. After a search i got a sample program for task queue. http://gaejexperiments.wordpress.com/2009/11/24/episode-10-using-the-task-queue-service/ It will very useful for beginners Like me. Regards, Sharun.

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• language specific virtual keyboard with java

  - by user343285

  Hello everyone! I have to make an on-screen keyboard using JAVA on linux. the problem is it has to work on the most languages. for start, i need to et the current locale, that's clear, but after that, is there any way of getting the keyboard layout and maping of that locale? i searched for hours, but couldn't find a thing, so i really hope you can help me. Thanks in advance, Adam!

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• Accessing the shadowed field from enclosed member class (Java)

  - by kolm

  Hi there, is it possible to access a shadowed field of an enclosing class from the enclosed one in Java? public class Inherit { public int a = 3; private int b = 5; public class Inheriting { public int a = 23; private int d = 8; public void f() { System.out.println("Here I want to get a = 3"); ... } } } Cheers!

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• question about complex values in java

  - by davit-datuashvili

  We know that the general form of complex numbers is like this: z=a+i*b, where i is sqrt(-1). I have a question about how to express this in Java ?

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• Global keylogger in Java

  - by Manish

  I'm writing an application which monitors the person’s mouse and keyboard. If they have not used the keyboard or mouse for 1 minute, it should pops up a message which says “You have not used the mouse or keyboard for 1 minute” and an OK button. How do I do this in Java?

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• Java Applet Authentication

  - by user265536

  I have Java Applet(J2EE), I want to make it accessible only to a certain set of users,by authenticating them using username and password.What is the the best way of doing this?

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• Create a SortedMap in Java with a custom Comparator

  - by kunjaan

  I want to create a TreeMap in Java with a custom sort order. The sorted keys which are string need to be sorted according to the second character. The values are also string. Sample map: Za,FOO Ab,Bar

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• Class constructor in java

  - by aladine

  Please advise me the difference between two ways of declaration of java constructor public class A{ private static A instance = new A(); public static A getInstance() { return instance; } public static void main(String[] args) { A a= A.getInstance(); } } AND public class B{ public B(){}; public static void main(String[] args) { B b= new B(); } } Thanks

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