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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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• Do you find java.util.logging sufficient?

  - by Yuval A

  Per the title, do you find the default Java logging framework sufficient for your needs? Do you use alternative logging services such as log4j or others? If so, why? I'd like to hear any advice you have regarding logging requirements in different types of projects, and when integrating frameworks is actually necessary and/or useful.

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• Creating an invisible button in Java Swing

  - by AniDev

  Hello, I have seen many times on Java Swing GUIs buttons that look like images until the mouse rolls over them. They appear to not have their content area filled. When the mouse rolls over them, the content area fills in but the button looks as though the mouse is not hovering over it. An example of this would be the toolbar of buttons used to activate each demo in SwingSet2. How is this effect possible? Thanks!

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• Possible memory leaks in the Java Development Work

  - by harigm

  Can any one let me where the memory leaks can happen when we are developing Java based application. I am aware of Database but apart from that, is there any other possible ways . Please list the scenarios

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• How do I determine which methods are used by a Java class

  - by Paul Butcher

  I need to provide a report of which APIs are used by our code. For a Windows DLL, I would use "dumpbin /imports" - is there an equivalent for a Java .class file? javap seems to be the obvious place to look, but I can't find any options that seem to do what I'm after. Thanks!

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• Naming conventions for complex getters in Java

  - by Simon

  Hi there! I was reading this C# article about the usage of properties and methods. It points out why and when to use properties or methods. Properties are meant to be used like fields, meaning that properties should not be computationally complex or produce side effects I was asking myself how you could express this difference in Java, where you only use getters for the retrieval of data. What is your opinion?

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• Sample xml configuration for log4j, have a 'main' java application and want to write to file

  - by Blankman

  Are there any example log4j configuration files (XML). I have a java main application. I want log4j to output to console AND write to file. Any examples of this would be greatly appreciated. I'm using netbeans if that matters.

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• Convert string from UTF-8 to ISO 8859-1 in Java

  - by Derk

  I want to encode a UTF-8 string to a ISO 8859- string in Java I have this: String title = new String(item.getTitle().getText().getBytes("ISO-8859-1")); But it isn't working, the output is Sørensen for example

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• Wait For Return Key Press Using Java Scanner

  - by Gordon

  What would be the best way to wait for a return key press from the user using the Java Scanner Class? In a command line tool I would like the user to confirm before carrying out an action. Please correct me if there a more standard way of doing this in a command line tool.

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• Double to scientific notation in java

  - by Daniel G. R.

  Hi everyone, I have a double number like 223.45654543434 and I need to show it like 0.223x10E-3 for example, how can I do it in java???????? URGENT!!!!!!!!!!! thanks!

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• Applying a patch from java.net

  - by user354414

  I have a problem with Jaxb enumerations that is related to this bug https://jaxb.dev.java.net/issues/show_bug.cgi?id=708 A patch has been supplied to the issue that can resolve the problem. How can I apply this patch to resolve my problem

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• Get system information using java (embedded in a page)

  - by Anant

  Is there any way I can get system info, like processor/ram etc (preferably cross platform, in browser)? I am looking to implement this in a website, so I need it in either flash or a java applet.

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• Java portal architectural considerations

  - by Woot4Moo

  Currently there exists a need to create an application that will serve 5 different customers each requiring their own specific URL and content repository. My question is when designing this application what should my considerations be for protecting the content of the individual customers while meeting the requirements of the unique URL. The system will be sitting on Windows with a postgres database and java as the implementation language.

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• Properly match a Java string literal

  - by Fork

  Hi, I am looking for a Regular expression to match string literals in Java source code. Is it possible?

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• Good concurrency example of Java vs. Clojure

  - by Michiel Borkent

  Clojure is said to be a language that makes multi-thread programming easier. From the Clojure.org website: Clojure simplifies multi-threaded programming in several ways. Now I'm looking for a non-trivial problem solved in Java and in Clojure so I can compare/contrast their simplicity. Anyone?

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• How to capture video from webcam(in java)?

  - by user243680

  I want to develop an application in java to capture video from webcam and store it onto a particular location.Can anyone provide me the working code? What type(usb,ip etc..) of webcam is the best in order to develop the application. Please help me. how to proceed?

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• Parallel Web Service Calls in Java

  - by java_pill

  Is there anyway to make web service calls from a Java client app. (Apache Axis based) in parallel? Does async style Web Service client (Apache Axis based) help?

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• Is Java Swing still in use?

  - by Mark Szymanski

  I am planning on making a Java Swing application and was wondering if Swing is still used or if it has been replaced with something else. Thanks in advance!

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• Should Java raw types be deprecated?

  - by Paul Croarkin

  Should a future release of Java deprecate the use of raw types to force the migration to generics? I could also see having raw types not allowed by default but allowing them via a compile flag for legacy code.

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• Where Java applets game portals?

  - by StudioFortress

  I have started making some small Java games that run in a browser and have found a couple of game portals where I can host then (GameJolt.com, JavaGameTomb.com and Games4j.com). Most of the other portals I find either only allow Flash or offer the games for download. Apart from those above, what other portals exist that allow hosting applets?

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• Java - Incrementing through IP addresses in String format

  - by Matt

  I'm new to java and i'm trying to find a way of incrementing through an user input IP address range. For example from 192.168.0.1 to 192.168.0.255. However the way my application works at the moment is the take the from and to ip addresses as a String. Is there a way I can increment through all the ip addresses the user input from and to? Hope this makes sense and please dont flame me, I have looked for an answer!

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• Problem in java.util.Set.addAll() method

  - by Yatendra Goel

  I have a java.util.Set<City> cities and I need to add cities to this set in 2 ways: By adding individual city (with the help of cities.add(city) method call) By adding another set of cities to this set (with the help of cities.addAll(anotherCitiesSet) method call) But the problem in second approach is that i don't know whether there were any duplicate cities in the anotherCitiesSet. I want to do some processing whenever a duplicate entry is tried to be entered in thecities set.

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• Reading barcodes from Java

  - by santiagobasulto

  Hello everyone. I'm dealing with a barcode reader in my java app. The problem is that the barcode, before and after reading and sending the actual barcode, sends a return code. I've some JTextFields and when the reader reads the barcode it change the focus, and then sends another return that makes the window to close. Is it anyway to "intercept" those "return" commands ?

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• Java Packages in Seperate repository than others

  - by sethxian

  I was wondering if it's possible to have a java package setup using a different subversion repository than the rest. Ideally, I would probably go with a different library project, but in the case of BlackBerry, the 3rd party library linking does not work well, so I would like to just separate my UI package into a different repository than the rest so that I can control the UI better for different OS versions, but leave all the other packages the same. Is this possible?

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• Filtering illegal XML characters in Java

  - by GrzegorzOledzki

  XML spec defines a subset of Unicode characters which are allowed in XML documents: http://www.w3.org/TR/REC-xml/#charsets. How do I filter out these characters from a String in Java? simple test case: Assert.equals("", filterIllegalXML(""+Character.valueOf((char) 2)))

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