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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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• 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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• 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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• 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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• Java: ECC (error correcting code) library?

  - by Jason S

  Is there a well-known implementation, that has friendly open-source licensing (not GPL), of an ECC (error correcting code) library (e.g. Reed-Solomon) for Java?

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• Running a Java program with input from a file

  - by Katy

  I am writing a program that reads the input from a file and then prints it to the screen. When I run it without taking the input from the file, it works perfectly fine. However, every time I try to run it from the file it gives me an "Exception in thread "main" java.util.NoSuchElementException: No line found at" error that occurs every place the input is suppose to be read. I have no idea what is going on.

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• java file picker with inline thumbnails

  - by Martin DeMello

  I need a nautilus-style file picker in java, where the files are shown "gallery-style" with a customisable thumbnail for each file. Is it possible to make the standard open file dialog do this? If not, does anyone know of an open-sourced widget that I can use?

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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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• 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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• How to time Java program execution speed

  - by George Mic

  Sorry if this sounds like a dumb question but how do you time the execution of a java program? I'm not sure what class I should use to do this. I'm kinda looking for something like: //Some timer starts here for (int i = 0; i < length; i++) { // Do something } //End timer here System.out.println("Total execution time: " + totalExecutionTime); Thanks

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• Java's equivalent to bisect in python

  - by systemsfault

  Hello all, Is there a java equivalent to python's bisect library? With python's bisect you can do array bisection with directions. For instance bisect.bisect_left does: Locate the proper insertion point for item in list to maintain sorted order. The parameters lo and hi may be used to specify a subset of the list which should be considered; by default the entire list is used.

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• Desktop Screen Streaming in Java

  - by Joannes

  Can anyone tell me how to stream my desktop through sockets in Java? I tried using screen captures and sending them 1 at a time but it's no good. Too slow! I think to redirect the video stream would be better.

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• Equivalent of IllegalArgumentException of Java in C++

  - by vito

  In Java if an input argument to a method is invalid, we can throw an IllegalArgumentException (which is of type RuntimeException). In C++, there is no notion of checked and unchecked exceptions. Is there a similar exception in standard C++ which can be used to indicate a runtime exception? Or is there a common style not in the standard but everyone follows in practice for a situation like this? Or, should I just create my own custom exception and throw it?

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• What is the significance of the reverse domain name for java package structure

  - by Vaishak Suresh

  Why do we use reverse domain name like com.something. or org.something. structure for java packages? I understand this brings in some sort of uniqueness, but why do we need this uniqueness?

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• couldn't start a java application as a windows service

  - by rgksugan

  I have written a java application which is a RMI server. I need to start rmiregistry to run this application and i also want my apllication to start automatically when the system starts. I have converted my application into a windows servise. When i try to start my service it shows this error Error 1067: The process terminated unexpectedly Is it because my program throws an exception when my application is started before the rmiregistry is started.

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• parsing JSON in java ?

  - by bukuai

  How to parsing JSON in java? { "code": 100, "message": "SUCCESS", "result": { "list": [ { "cardNumber": "ALUFZZ5SZ1Q5", "expireTime": 1270742400, "surplusThreshold": 4, "uid": 771292, "useTime": 1270214375, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1QD", "expireTime": 1270828800, "surplusThreshold": 7, "uid": 784289, "useTime": 1270302200, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1RC", "expireTime": 1270828800, "surplusThreshold": 10, "uid": 773664, "useTime": 1270300871, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1UM", "expireTime": 1270828800, "surplusThreshold": 10, "uid": 779560, "useTime": 1270282841, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1VT", "expireTime": 1270656000, "surplusThreshold": 2, "uid": 754099, "useTime": 1270106775, "wareId": 1145 } ], "pageCount": 61, "pageIndex": 2, "pageSize": 5, "recordCount": 308 } }

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• pumpevents - customized look and feel java taking too much system resources

  - by Aizaz

  I make my own GUI see here but system is taking too much resources on further looking into the issue i have found that java pumpevents method is talking too much time. Any resolutions ???? pump events more detail pump event detail

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• Resize form objects in Java

  - by PeerFull

  I have a Java applet, which is a form that draw shapes into it (Rect, Oval, Line). Each shape is represented by 2 points and can draw itself to the form. When the JApplet form resizes, I need to resize the shapes also while keeping the aspect ratio. I didn't find an high quality solution for doing this that solves this problem. Tried to write a solution from this, but it came up as lousy when tested, Can someone publish an example code for doing that please?

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• Java: file write on finalize method

  - by sowrov

  In my understanding a singleton object will destroy only when the application is about to terminate. So in C++ I write a Singleton class to log my application and in that Singleton logger's destructor I log the time when my application was terminated. Things worked perfectly in C++. Now I want to have that same logger in Java, as in java there is no destructor so I implemented the finalize method for that singleton logger. But it seem that finalize method actually never get called. So, I add that System.runFinalizersOnExit(true); line, somewhere in my code (though I know it is deprecated) and that finalize method get called every time before termination of the app. But still there is a problem! If I try to write anything on file in that finalize method, It does not work, though System.out work without any problem! :( Can you guys help me on this problem? Here is a sample code of what I am try to do: Singleton Logger Class: public class MyLogger { FileWriter writer; private MyLogger() { try { this.writer = new FileWriter("log.txt"); } catch (IOException ex) { } } public static MyLogger getInstance() { return MyLoggerHolder.INSTANCE; } private static class MyLoggerHolder { private static final MyLogger INSTANCE = new MyLogger(); } @Override protected void finalize () { try { super.finalize(); System.out.println("Here"); //worked correctly. this.writer.write(new Date().toString()+System.getProperty("line.separator")); this.writer.write("End"); this.writer.flush(); //does not work! this.writer.close(); } catch (Throwable ex) { } } public synchronized void log(String str) { try { this.writer.write(new Date().toString()+System.getProperty("line.separator")); this.writer.write(str+"\n"); this.writer.flush(); } catch (IOException ex) { } } } Main: public class Main { public static void main(String[] args) { System.runFinalizersOnExit(true); MyLogger logger = MyLogger.getInstance(); logger.log("test"); } }

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• Common Ancestor to Java Array and List

  - by Phuong Nguyen de ManCity fan

  In .NET, both array and list have Enumerable as ancestor, so a method that accept Enumerable as an argument can receive both array and list as its argument. I wonder if there is a similar thing in Java?

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• link state notification in Java

  - by wwh37

  Is there any way in Java to receive event notifications whenever link state changes on a computer (connected, disconnected, up, down, etc)? Thanks!

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• Replacement for java.util.zip for streaming usage?

  - by evilfred

  java.util.zip sucks for stream compression. The longer you leave an Inflator/Deflator open without calling end(), the more native memory it uses up. This is a known issue: http://bugs.sun.com/view_bug.do?bug_id=4797189 which nobody seems to care about fixing. What is a good alternative? Preferably one that is free and is still actively supported by its developers.

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• Java: iterating through list of lists?

  - by HH

  The question but in C#. So does Java have C#'s command? I need it for Matches-SearchTerm-Files-relationship. foreach(var i in BunchOfItems.SelectMany(k => k.Items)) {}

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• Tear subString from within HTML tags with JAVA

  - by asaf

  Hi! let say i have a string like this "neverMindWhat is upneverMind" and I want to take out the What is up using regexp with JAVA. Someone told me that using matcher will be the best. Can anyone show me how to do it using Matcher? Other solutions are welcome too! Thanks!

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• Elegant min/max absolute values in java

  - by Stefano Borini

  I need to get the minimum and maximum values in a collection of floating point values, after applying an absolute value conversion. In python I would do this min(map(abs, [-5, -7, 10, 2])) how can I perform the same operation in java in the most elegant way?

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