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• I write bad wave files using Java

  - by Cliff

  I'm writing out wave files in Java using AudioInputStream output = new AudioInputStream(new ByteArrayInputStream(rawPCMSamples), new AudioFormat(22000,16,1,true,false), rawPCMSamples.length) AudioSystem.write(output, AudioFileFormat.Type.WAVE, new FileOutputStream('somefile.wav')) And I get what appears to be corrupt wave files on OSX. They won't play from Finder however using the same code behind a servlet writing directly to the response stream and setting the Content-Type to audio/wave seems to play fine in quicktime. What gives?

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• difference between hashmap and array list in java?

  - by Venkats

  In java, ArrayList and HashMap are using in collections. But i couldn't understand at which situations we should use ArrayList and which time use HashMap. What is the major difference between both of them?

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• Java test specific property of an object using Collection.contains()

  - by DrDro

  In Java how to test if a Collection of objects contains an object depending on one of its properties. For example I would like to test if Collection<myObjects> contains an instance of myObjects which has myObjects.name = "myName".

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• java database backup restore

  - by jawath

  how do i backup /restore any kind of databases inside my java application to flate files.Are there any tools framework available to backup database to flat file like CSV, XML,or secure encrypted file,or restore from csv or xml files to databases ,it should be also capable of dumping table vise restore and backup also

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• Java: How to get a classpath for current process

  - by phil swenson

  when I call System.getProperty("java.class.path") I only get this: /Users/pswenson/dev/sag/gradle-0.8/lib/gradle-core-0.8.jar The other classes in question are loaded at dynamically. Any ideas on finding the full classpath?

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• Converting jsp to servlet in spring mvc and installers for java webapplication

  - by srinivas-g

  I i have developed a java web application using spring mvc and used jetty server, its a intranet application where i want to distribute it to the end user in a form of binary format where user can install the application using installers(please suggest the which one will be suitable ) for windows platform, my other requirement is i dont want the end user to see the jsp code.

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• Java Speech recognition api

  - by jaymin

  HI, i am currently developing an android application where i am required to implement speech recognition...could u suggest a link where i could find a java speech recognition API...? Thanks

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• string recieve with utf8 format but have problem in java

  - by zahir hussain

  hi i want to know how to receive the string from file in java... that file have different language letters... i used UTF-8 format... this can receive some language letters correctly... but Latin letters cant display correctly... so how can i receive all language letters... or any other format for receive all language letters... thanks and advance

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• Profiling short-lived Java applications

  - by ejel

  Is there any Java profiler that allows profiling short-lived applications? The profilers I found so far seem to work with applications that keep running until user termination. However, I want to profile applications that work like command-line utilities, it runs and exits immediately. Tools like visualvm or NetBeans Profiler do not even recognize that the application was ran. I am looking for something similar to Python's cProfile, in that the profiler result is returned when the application exits.

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• Concurrent Linked HashMap java

  - by Nilesh

  Please help me use/create Concurrent LinkedHashMap. As per my belief, if I use Collections.synchronizedMap(), I would have to use synchronized blocks for getter/setter. If I use ConcurrentSkipListMap, is there any way to implement a Comparator to store sequentially. I would like to use java's built in instead of third party packages. Thanks

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• Java socket close timeout

  - by Shayan

  In java when you close a socket it doesn't do anything anymore but it actually closes the tcp connection after a timeout time. I need thousands of sockets and I want them to be closed exactly after closed them not after wasting my time and my resources! What can I do? Thank you.

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• Window z-ordering in java

  - by Aaron

  Is there a way to manage the window z-ordering of JDialog windows within java? I would like to able to assign each window to a layer such that windows on lower layers can never go above and obscure windows on higher layers. Even when they have focus. Similar to the Z-order capability that exists for components but for JDialog windows. The solution does not need to work across all OSes. A linux specific solution is acceptable.

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• Java force catch RuntimeException?

  - by wuntee

  Is it possible to force java to make you catch RuntimeExceptions? Specifically I am working with the Spring framework and the whole Exception hierarchy is based upon RuntimeExceptions. A lot of the times I forget to try and catch the Exceptions. A specific example is when doing an LDAP query, or an SQL call.

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• java program support multiple languages

  - by Alaa

  hello every one , how can i make java program working with multiple languages (frensh, english , arabic .. etc) , i mean i wanna make a comboBox ,when i choose one language, all the labels in the GUI interfaces change to the selected language and even the stdin also change to that language. thanx in advance Alaa

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• Good-looking Java Swing Look&Feel?

  - by eric

  I'm working on an open-source Java Web Start application, and I'd like to give it a consistent theme across platforms. Metal is totally ugly, and I'm not particularly happy with Substance (esp. performance). What are the best Swing Look&Feel options out there today?

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• How to convert dwg file to jpeg or gif format using java api or .net library

  - by magh

  How can be autocad file (dwg) converted to jpeg or gif file using java api or or .net library. Without using the convertors Thanks in advance

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• Mint Linux - Downgrade Java to 1.5

  - by Chrisc

  Hello, Currently, I am running Mint Linux (Release 9). I need to downgrade Java from version 1.6 to 1.5, and have been trying to figure out how to go about this. So far, I've had no luck. The package manager doesn't seem to have it. Does anyone have any suggestions? Thanks, - Chris

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• Free Java library for converting existing PDF to PDF/A

  - by Shervin

  Hi. I am trying to convert PDF to PDF/A. Currently I can do this using OpenOffice pdf viewer plugin together with Jodconverter 2. But this is pretty cumbersome to do. Does anybody of any open source / free Java libraries I can use to do this.

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• Java equals and hashmaps problem

  - by johan001

  So I'm learning Java and I'm trying to understand equals, but I really don't understand it. So my question is: how does equals works? Thanks

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• Why is System.arraycopy native in Java?

  - by James B

  I was surprised to see in the Java source that System.arraycopy is a native method. Of course the reason is because it's faster. But what native tricks is the code able to employ that make it faster? Why not just loop over the original array and copy each pointer to the new array - surely this isn't that slow and cumbersome? Thanks, -James

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• How can I see which garbage collector java is using

  - by Thirler

  The Java Virtual Machine supports several garbage collection strategies. This article explains them. Now I am wondering which (automatically selected) strategy my application is using, is there any way to let the JVM(version 1.6) print this information?

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• Java - Runtime.getRuntime().exec() what's going on?

  - by kunkanwan

  Hi, I have problem with Runtime.exec() in Java My code: String lol = "/home/pc/example.txt"; String[] b = {"touch", lol}; try { Runtime.getRuntime().exec(b); } catch(Exception ex) { doSomething(ex); } It's working good but when I trying changle variable "lol" files doesn't create in hard disk for instance: String lol = x.getPath(); where getPath() returns String What should I do ? Thanks for your reply :)

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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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• 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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