Phantom Reboot with Java MIDI

I have a Java Program that "Processes" MIDI data being input from an external music keyboard (connected to computer with MusicMan USB Midi cable)
When I start up the program the 1st time -> Everything runs fine.
BUT when I close the program and re-open it -> After a few minutes, the computer will reboot!
Do you know why this is? I've tried everything.
**NOTE** It only happens when the Yamaha Keyboard has been connected to the computer via the USB port. I can open and close the program an infinite amount of times if the keyboard is not connected to the computer.

can you please elaborate what you mean? do you know much about MIDI processing? What hardware do the javax.sound.midi.* classes use?

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Need help with Java MIDI and VST info

I am currently a college student for programming and I know programming very well, but for this current task, I am completely stuck. This is not a school project or work, just a personal project I'm working on at the moment to learn more about Java.
What I am trying to create is a VST (Virtual Studio Synthesizer) using Java for use in music programs such as FL Studio, Sonar, Ableton, and so on. I did alot of Googling and found the following program:
[http://jvaptools.sourceforge.net/index.html]
I got it working, but it's not quite what I am looking for (it's more like an on-site editor that you enter code into and then run it). I want to create a VST from scratch and learn what each thing means in the program. I've done some research on MIDI input and output and found the following in the Java documentation:
[http://java.sun.com/javase/6/docs/api/javax/sound/midi/MidiDevice.html]
I figured I'm on track of what I'm looking for, but the problem is that the Java documentation simply sucks. It has no examples of code, how the functions work, and how I'm suppose to use them.
First off, I want to start with the extreme bare basics. Is it even possible to do a VST in JUST Java? I've seen and used examples of obtaining data from a MIDI file and playing it, but that's not what I'm trying to do. Second, how would I take MIDI data from a music program running the VST and enter the data into a text box? Once I'm able to do that, I should be able to work with the data to produce audio output.
My program I am attempting to make is a guitar synthesizer that I can run in music programs as a VST. If anyone around here knows anything about MIDI and VST plugins, please, post some example code and help point me in the right direction to creating something. I'm not looking to use other people's programs or code, I want to make something myself from scratch but I don't know where to start!

Programming guide
[http://java.sun.com/j2se/1.5.0/docs/guide/sound/programmer_guide/contents.html]
Examples...
[http://www.jsresources.org/examples/]

Solved: INTERNAL_ERROR when creating container with Java on Vista

I don't know what the root cause is, but I've got a solid test case.
If I maintain a reference to the Environment used to create my XmlManager, then openContainer will barf up a mysterious INTERNAL_ERROR. Setting my reference to the Environment to null eliminates the problem.
I'm using 2.3.10 on Vista with java 1.6. Netbeans 6.0 beta 1
the error:
com.sleepycat.dbxml.XmlException: Uncaught exception from C++ API, errcode = INTERNAL_ERROR
at com.sleepycat.dbxml.dbxml_javaJNI.XmlManager_openContainer__SWIG_2(Native Method)
at com.sleepycat.dbxml.XmlManager.openContainer(XmlManager.java:525)
at com.sleepycat.dbxml.XmlManager.openContainer(XmlManager.java:190)
at restlet.Main.main(Main.java:105)

Oops, haha. I guess rebooting made this go away (!?); I can't repro today.
Here's the test case anyway.
import com.sleepycat.db.DatabaseException;
import com.sleepycat.db.Environment;
import com.sleepycat.db.EnvironmentConfig;
import com.sleepycat.dbxml.XmlContainer;
import com.sleepycat.dbxml.XmlContainerConfig;
import com.sleepycat.dbxml.XmlException;
import com.sleepycat.dbxml.XmlManager;
import com.sleepycat.dbxml.XmlManagerConfig;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Test {
public static void main(String[] args) {
Environment myEnv = null;
XmlManager xmlManager = null;
XmlContainer myContainer = null;
File envHome = new File("C:/testEnv");
String theContainer = "container.dbxml";
try {
EnvironmentConfig envConf = new EnvironmentConfig();
myEnv = new Environment(envHome, envConf);
XmlManagerConfig xmlManagerConfig = new XmlManagerConfig();
xmlManager = new XmlManager(myEnv, xmlManagerConfig);
// myEnv = null; // omit for error
XmlContainerConfig xmlCC = new XmlContainerConfig();
myContainer = xmlManager.openContainer(theContainer, xmlCC); // error here
myContainer.close();
xmlManager.close();
} catch (XmlException xml) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, xml);
} catch (DatabaseException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (FileNotFoundException fnfe) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, fnfe);
} finally {
try {
if (myContainer != null) {
myContainer.close();
if (xmlManager != null) {
xmlManager.close();
if (myEnv != null) {
myEnv.close();
} catch (DatabaseException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, "eject!", ex);
}

Connecting A Keyboard With a MIDI Cable

I have connected my keyboard to my laptop with a MIDI cable, and the sustain pedal makes a noise throught the computer whenever I push it down. What to do?

I don't know much about sequencers. But maybe a concept from the "raw audio" world would help. Riven's comment in this thread is what is most pertinent:
http://www.java-gaming.org/topics/reliable-sound-playing/26104/view.html
How are MIDI sounds launched? Are you doing them singly? Or can they be placed in the context of a running sequence, running timeline? If the latter can be done, then you have a better chance of accuracy.
There's also a link, in that thread, to a good article about timing issues for audio, in my first post there.
It might be helpful to enqueue the MIDI events as they arrive, with a timestamp, and use the timestamps when calculating when to feed them to the Sequencer. But as I said, I could be way off, as I haven't worked with MIDI in Java yet, and don't know if that even fits the model of how things are done.
But it's not like you've gotten a lot of help here from anyone else, yet...
You might try StackOverflow forums.

Need help: computer reboots whenever java is initiated.

Recently received a used computer with xp installed.
Every time I initiate something to do with java the computer restarts.
For Instance:
in control panel - clicking on the java console.
online - using online storage service "adrive.com" to upload files.
installing - running the java installer for jedit.
Each one of these things causes a reboot.
I've deleted and reinstalled the latest java runtime environment, ran virus/spyware scans, deleted everything from the computer I don't need, and cleaned the registry, but nothing has solved the problem.
Searched for a solution on google and troubleshooting guides, but the terms: java, reboot, xp, etc; are all so common that the results don't come anywhere close to the answer I need.

Wouldn't you know it. After spending all this time searching for an answer, almost immediately after I posted this I found the answer here on this forum:
http://forums.sun.com/thread.jspa?forumID=32&threadID=689707
Thanks to: Caffeine0001
For those who want to know: All I did was update my -Display Adapter- driver through -Device Manager- and ran windows update. Windows update probably had nothing to do with the fix, but it updated .NET to 3.5 and updated IE to version 8.
Good To Go!

Executing a file with Java?

Hi,
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My Mindset:
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Thanks!
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Well here is the code I have:
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XSLT Mapping with Java class not working in Integration Repository

Hi,
I have an XSLT mapping program with Java enhancement and I was able to successfully tested it in Stylus Studio. However, when I imported the Java class and the xslt program in Enterprise Service Builder and tested it, my program does not compile.
Here is the error message: "Transformer Configuration Exception occurred when loading XSLT mapping_temp.xsl; details: Could not compile stylesheet".
My java program is in a zip file containing SOAPHeaderHandler.java and SOAPHeaderhandler.class. My Java has a package com.nga.xslt.
Here is the declaration of my Java class in the XSLT: xmlns:javamap="java:com.nga.xslt.SOAPHeaderHandler"
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Hi ,
select XMLTOOLKIT option in Operation mapping and execute it.
I am not sure we can call java program in XSLT Program,but alternative is copy the code and use it in XSLT mapping it self,that means your XSLT program will become with JAVA extensions.
then in Operation mapping level select SAPXMLTOOL kit option and execute it. i hope it will work. if it is not working then you have deploy some JAXP files on server,because the way execution of XSLT Mpaping program got changed,like when eve you executing XSLT with extnasions( if you are not using XMLTOOL kit option) then you have to use latest version of JAXP.JDK files.
Regards,
Raj

Sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loop

sir i have given lot of effort but i am not able to solve my problem either with notifiers or with occurence fn,probably i do not know how to use these synchronisation tools.

sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loopHi Sam,
I want to pass along a couple of tips that will get you more and better response on this list.
1) There is an un-written rule that says more "stars" is better than just one star. Giving a one star rating will probably eliminate that responder from individuals that are willing to anser your question.
2) If someone gives you an answer that meets your needs, reply to that answer and say that it worked.
3) If someone suggests that you look at an example, DO IT! LV comes with a wonderful set of examples that demonstate almost all of the core functionality of LV. Familiarity with all of the LV examples will get you through about 80% of the Certified LabVIEW Developer exam.
4) If you have a question first search the examples for something tha
t may help you. If you can not find an example that is exactly what you want, find one that is close and post a question along the lines of "I want to do something similar to example X, how can I modify it to do Y".
5) Some of the greatest LabVIEW minds offer there services and advice for free on this exchange. If you treat them good, they can get you through almost every challenge that can be encountered in LV.
6) If English is not your native language, post your question in the language you favor. There is probably someone around that can help. "We're big, we're bad, we're international!"
Trying to help,
Welcome to the forum!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Problem with java installation on Linux

HI ,
I am trying to install jdk on Linux..I am new to java and Linux both. I am trying to download the file for the linux installation onto my home PC(windows XP) and then ftp it to my Linux machine. I need to do this because I have a remote login to my Linux machine( a server at school). However when I try to download file my IE jsut crashes. I can see the page for accepting the Agreement but when I click on Accept the next page just stops responding.
Could someone explain why this is happening.
thanks,
G.

The problem doesn't have to do anything with Java or Linux as far as i can see. It's more likely a problem with Windows XP and IE. Be assured that normally downloading the Linux JDK in windows is not a problem.

I have a problem with Imac mid 2010 graphics card (ATI Radeon 5670 512MB)

I have a problem with Imac mid 2010 graphics card (ATI Radeon 5670 512MB). When I play video formats like xvid, mkv, avi iMac freezes and emits horrible sound,in service said the problem is not overheating. Not a problem with memory or hard disk because I placed second correct parts.The same problem is with OSX 10.6.8 and 10.8.4 and other players.Apple hardware test found no problem and tech tool pro found no fault.
After five days of testing in the service they can not found fault and it was decided to change the graphics card.
New graphics have been tested for two days but it is not reproduced divx ... but their test software which did not find any fault on the old graphics...
Do I have the right to complain if repair does not fix the problem because I use non apple softwere and video formats.

You could look at the System Profile for the info it presents for the card. But why wouldn't you think it's not up to date if you have the latest install (according to your sig above)?
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Problem with Java and Windows (Mainly Vista and UAC)

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http://www.wintellect.com/cs/blogs/jrobbins/archive/2007/03/27/elevate-a-process-at-the-command-line-in-vista.aspx
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@WebParam(name=AUTHENTICATE_HEADER,header=true,mode=WebParam.Mode.INOUTHolder<Authenticate Header>
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Problem with java and pogo games

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Oracle has released a Java 7 Update 11 to address security vulnerabilities and you should update to that version.
*https://support.mozilla.org/kb/how-to-use-java-if-its-been-blocked
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Problem with java swing button and loop

Problem with java swing button and loop
I�m using VAJ 4.0. and I�m doing normal GUI application. I have next problem.
I have in the same class two jswing buttons named start (ivjGStart) and stop (ivjGStop) and private static int field named Status where initial value is 0. This buttons should work something like this:
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Start button must set enabled and selected and Stop button must set disenabled.
Field status is set to 0.
This works everything fine without loop �do .. while� inside the procedure IzvajajNeprekinjeno(). But when used this loop the start button all the time stay (like) pressed. And this means that a can�t stop my loop.
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ivjGStop.setEnabled(true);
ivjGStop.setSelected(true);
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So, I'm asking what I have to do, that start button will not all the time stay pressed? Or some other aspect of solving this problem.
Any help will be appreciated.
Best regards,
Tomi

This is a multi thread problem. When you start the gui, it is running in one thread. Lets call that GUI_Thread so we know what we are talking about.
Since java is task-based this will happen if you do like this:
1. Button "Start" is pressed. Thread running: GUI_Thread
2. Event gStart_ActionEvents() called. Thread running: GUI_Thread
3. Method IzvajajNeprekinjeno() called. Thread running: GUI_Thread
4. Sleep in method IzvajajNeprekinjeno() on thread GUI_Thread
5. Call PreberiDat(). Thread running: GUI_Thread
6. Check status. If == 1, go tho 4. Thread running: GUI_Thread.
Since the method IzvajajNeprekinjeno() (what does that mean?) and the GUI is running in the same thread and the event that the Start button has thrown isn't done yet, the program will go on in the IzvajajNeprekinjeno() method forever and never let you press the Stop-button.
What you have to do is do put either the GUI in a thread of its own or start a new thread that will do the task of the IzvajajNeprekinjeno() method.
http://java.sun.com/docs/books/tutorial/uiswing/index.html
This tutorial explains how to build a multi threaded gui.
/Lime

Phantom Reboot with Java MIDI

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