Executing a .bat/java program every 5 minutes

Hi,
I have a java program. I need to run that code every 5 minutes from another java program. could anyone please help me on doing this?
Thanks!

while(some condition){
System.exec(your bat / program)
Thread.sleep(1000*60*5);
}

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Methode who execute an other java program

Hi!
Is there anyone who know a method who can execute an other java program from an applet?
Thanks
Julien

Depends where the classes of the other program are located. A java program is just a collection of classes, with one particular one regarded as the main one. If you know the main class of the other program at compile time you can just invoke it like any normal method.
Something like:
MyOtherProgram.main(new String[]{"first parameter", "second parameter"});(assuming that it's just a standard "command-line" kind of program.)
If you don't know the class name at until runtime it's still farly straightforward:
something like
import java.reflect.*;
String theOtherProgram = ......
Class otherP = Class.forName(theOtherProgram);
String [] params = {"first parameter", "Second parameter"};
Method theMain = otherP.getMethod("main", new Class[]{params.getClass()));
theMain.invoke(null, params);

Running labview program every five minutes

I am very inexperienced with Labview, but I am attempting to build a program. This program is to get measurements of frequency (can be used to determine strain) and resistance (can be used to measure temperature). I got the program to work when I push a button on the front panel to start the process and then process data when I push another button. I need to get this process to be automated because it needs to run for a long time. I want to take measurements (frequency and temperature) every five minutes. Also, I need to have some delay (maybe 10 sec) before the data is processed because it take time for the data to be received. Any help is appreciated. I attached the .vi Thanks!
Attachments:
VW DAQ.vi ‏266 KB

GerdW wrote:
Hi laplanmd,
well, you didn't read the style guide before?
That is the understatement of the year! Hidden wires everywhere. I would love to see the tracing with highlite execution on. SampleCount is a race condition just waiting to happen.
To the OP: Please think of us poor volunteers that have to waddle through this mess to try to help you. We can't decipher code that has hidden wires, right to left wires, structures put on top of controls/indicators. Please try to clean things up before posting. In your case, a total re-write using a state machine is very appropriate.
- tbob
Inventor of the WORM Global

How to execute an external executable in my java program?

hi,
i want to write a java program to execute some external executables.
for example, i had an executable which takes a string as its input parameter, and:
it writes to stdout a string : "[stdout] hello, "+parameter+"!";
it writes to stderr a string : "[stderr] hello, "+parameter+"!".
and it exits with an error code 1.
my java program looks like this:
public class Test {
public static void main(String[] args)
throws Exception {
    String inputParameter = "heavyz";
    String stdoutOutput = null;
    String stderrOutput = null;
    int exitCode;
    // Do something here to launch the executable,
    // providing inputParameter as its input,
    // getting its stdout output to String stdoutOutput,
    // and its stderr output to String stderrOutput,
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}anybody can help me to complete the program above?
thanks a lot.
heavy ZHENG

check out Runtime.getRuntime().exec();

Execute an external java program with Runtime, problem with classpath

Hi,
I m calling an external java program by the command:
Runtime.getRuntime().exec("java -classpath \"library/*\" org.mypackage.TestMainProgram param1 c:/input/files c:/output/files");All my classes are stored in the relative directory "library", and it contains ONLY .jar files. However, I keep getting errors like:
"java.lang.NoClassDefFoundError: library/antlr/jarCaused by: java.lang.ClassNotFoundException: library.antlr.jar at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)Could not find the main class: library/antlr.jar. Program will exit.Exception in thread "main" where "antlr.jar" is a jar file in "library". It is there but still the program keeps complaining it cannot be found. The problem applies to any jars in "library", ie.., if i have "mylib.jar" then it will complain "NoClassDefFoundError: library/mylib/jar".
Could anyone give some pointers please?
Many thanks!
Edited by: 836590 on 14-Feb-2011 09:03

836590 wrote:
Hi,
I m calling an external java program by the command:
Runtime.getRuntime().exec("java -classpath \"library/*\" org.mypackage.TestMainProgram param1 c:/input/files c:/output/files");All my classes are stored in the relative directory "library", and it contains ONLY .jar files. However, I keep getting errors like:
"java.lang.NoClassDefFoundError: library/antlr/jarCaused by: java.lang.ClassNotFoundException: library.antlr.jar at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)Could not find the main class: library/antlr.jar. Program will exit.Exception in thread "main" where "antlr.jar" is a jar file in "library". It is there but still the program keeps complaining it cannot be found. The problem applies to any jars in "library", ie.., if i have "mylib.jar" then it will complain "NoClassDefFoundError: library/mylib/jar".
Could anyone give some pointers please?
Many thanks!
Edited by: 836590 on 14-Feb-2011 09:03First, if you run from the command line
java -classpath "library/*" org.mypackage.TestMainProgram param1 c:/input/files c:/output/filesfrom the parent directory of library, does it work?
Despite what I said to Kayaman about Runtime.exec not expanding the asterisk, it looks like that's what's happening, so that you're getting
java -claspath library/aaaa_something_before_antlr.jar library/antlr.jar library/bbb.jar library/ccc.jar org.mypackage.TestMainProgram param1 c:/input/files c:/output/filesThat is, it *is* expanding the asterisk to a list of files in the directory, and the first one is being taken as the classpath, and the second one--library/antlr.jar is being taken as the class to execute. I'm certain this doesn't happen on Linux, so it must be a Windows thing.
Two suggestions:
1) Try single quotes instead of double.
2) Try the exec that takes an array
Runtime.getRuntime().exec(new String[] {"java", "-classpath", "'library/*'", "org.mypackage.TestMainProgram", "param1", "c:/input/files", "c:/output/files");Edited by: jverd on Feb 14, 2011 9:41 AM

Execute ConcurrentRequest from java program

In order to execute concurrent request from java program are this 3 lines enough :
1)ConcurrentRequest concurrentrequest = new ConcurrentRequest(oadbtransaction.getJdbcConnection());
2)int i = concurrentrequest.submitRequest("some value", " some value", "some value", null, false, vector);
3)oadbtransaction.commit();
*******************************8
I am asking because while executing ConcRequest from PL/SQL I have to call a functin : fnd_global.apps_initialize(user_id ,resp_id, app_id) prior to executing FND_REQUEST.SUBMIT_REQUEST.
Is there any equivalent in java for apps_initialize?
thanks in advance.

hi
u can call the FND_global using callable statement
DBTransaction txn = getDBTransaction();
CallableStatement cs =
txn.createCallableStatement("begin fnd_global.apps_initialize(:1, :2,:3);end;");
try
cs.setString(1, getOADBTransaction().getUserId() );
cs.setString(2, getOADBTransaction().responsibilityId());
cs.setString(3, getOADBTransaction().getApplicationID());
cs.execute();
cs.close();
catch (SQLException sqle)
try { cs.close } catch (Exception(e) {}
throw OAException.wrapperException(sqle);
thanx
Pratap

Calling an executable from a java program

How can I call a compiled program from a java program. I have a fortran program, which I would like to call for execution from within my java program. My OS is linux.
Thanks,
An

Not quite sure in the case of fortran program, but one thing can be done, call ur fortran program from a batch (.bat file) and call this .bat file from java ;
try {
Process p = Runtime.getRuntime().exec("run.bat");
p.waitFor();
catch( Exception e ) {
}

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In c++ we can use a function WinExec to execute exe from a c++ program.
Is there a way to launch executables using java program. Lets say I have one executable with name "myexecutable.exe" and a java program "myprogram.java". How can I launch "myexecutable.exe" from the java program.
Is there a way to do this in Java?
Vijay

>>
class LoadExecutable
static void loadProcess()
Runtime r = Runtime.getRuntime();
Process p = r.exex("winword.exe");
public static void main(String args[])
loadProcess();
}Regards
- ManikantanBoth of these aren't good ideas - neither of them
deals with the input or output streams at all.
Everyone who's posted to this thread should read this.
None of you knows how to use Runtime.exec properly:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-t
aps.html
MOD
Thanks for the tips
-Regards
Manikantan

Execute Command fron Java Program

Hi All,
I am trying to execute a command from Java Application, but iam not getting any result. My problem is:-
1- Open a terminal.
2- execute command.
The same is working fine in windows , the step for windows are:-
1- execute cmd.exe
2- go to prompt
3- execute command.
How to do it for Solaris 10 ??? Any cmd.exe equivalent for solaris terminal???

This is done in the exact same way. You open a terminal (depending on your gui its called "console" or "this computer" (CDE), and "Gnome console" (iirc) in the Java desktop) and then you're home free. "javac", "java", etc. should all be in your search path.
If not look in /usr/java.

How to execute mimetex in java program

hi,
I am working with an application which has a chat window with a feature of displaying mathematical equation with the help of mimetex. Basically I want to know that how I can call a program like mimetex with some parameter that it takes and find the output for same.
thanx
manoj

You may be able to call WsImport's main() method from your code, something like this:
import com.sun.tools.ws.WsImport;
String[] args = {"put", "your", "arguments", "here"};
WsImport.main(args);(Make sure that the webservices-tools.jar file is on the classpath, since that's the one containing the WsImport.class file - you'll probably need the other webservices jars too).

Firefox has been freezing constantly on my Mac, and I have to force quit the program every few minutes.

For the past week or so, Firefox has been freezing multiple times per day. Each time, I have to force quit the program. I tried resetting the plug-ins and add-ons and things, I uninstalled and re-installed Adobe Flash Player, and I uninstalled and re-installed Firefox itself--none of these things has worked. I really don't want to stop using Firefox, but it is currently unusable. Can someone help?

Hello,
I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.
Thank you for contacting Mozilla Support.

Files not saving properly; File write vi stops program every 10 minutes

Trying to run current scan program; Data won't write automatically to file. I have to enter return at prompt to keep program running!

How are you writing your files? Are you using the Write LVM Express VI or some of the file I/O vis? This information will help alot.
You have to hit return if you have a dialog showing. You can create and write to files with any of the various functions without going through a dialog. Usually this is done by either placing the dialog in a case and only running it on the initial run of your loop, or by placing it outside of your loop so it runs only once before you start looping.
If you are using the Write LVM Express VI, you can set it to only prompt once. Then it remembers the path on subsequent iterations.
But, you need to give a little more information and maybe a sample VI to get a more specific answer.
Hope that this helps,
Bob
Bob Young - Test Engineer - Lapsed Certified LabVIEW Developer
DISTek Integration, Inc. - NI Alliance Member
mailto:[email protected]

Problem while executing simple java program

Hi
while trying to execute a simple java program,i am getting the following exception...
please help me in this
java program :import java.util.*;
import java.util.logging.*;
public class Jump implements Runnable{
    Hashtable activeQueues = new Hashtable();
    String dbURL, dbuser, dbpasswd, loggerDir;
    int idleSleep;
    static Logger logger = Logger.getAnonymousLogger();
    Thread myThread = null;
    JumpQueueManager manager = null;
    private final static String VERSION = "2.92";
      public Jump(String jdbcURL, String user, String pwd, int idleSleep, String logDir) {
        dbURL = jdbcURL;
        dbuser = user;
        dbpasswd = pwd;
        this.idleSleep = idleSleep;
        manager = new JumpQueueManager(dbURL, dbuser, dbpasswd);
        loggerDir = logDir;
        //preparing logger
        prepareLogger();
      private void prepareLogger(){
        Handler hndl = new pl.com.sony.utils.SimpleLoggerHandler();
        try{
            String logFilePattern = loggerDir + java.io.File.separator + "jumplog%g.log";
            Handler filehndl = new java.util.logging.FileHandler(logFilePattern, JumpConstants.MAX_LOG_SIZE, JumpConstants.MAX_LOG_FILE_NUM);
            filehndl.setEncoding("UTF-8");
            filehndl.setLevel(Level.INFO);
            logger.addHandler(filehndl);
        catch(Exception e){
        logger.setLevel(Level.ALL);
        logger.setUseParentHandlers(false);
        logger.addHandler(hndl);
        logger.setLevel(Level.FINE);
        logger.info("LOGGING FACILITY IS READY !");
      private void processTask(QueueTask task){
        JumpProcessor proc = JumpProcessorGenerator.getProcessor(task);
        if(proc==null){
            logger.severe("Unknown task type: " + task.getType());
            return;
        proc.setJumpThread(myThread);
        proc.setLogger(logger);
        proc.setJumpRef(this);
        task.setProcStart(new java.util.Date());
        setExecution(task, true);
        new Thread(proc).start();
     private void processQueue(){
        //Endles loop for processing tasks from queue
        QueueTask task = null;
        while(true){
                try{
                    //null argument means: take first free, no matters which queue
                    do{
                        task = manager.getTask(activeQueues);
                        if(task!=null)
                            processTask(task);
                    while(task!=null);
                catch(Exception e){
                    logger.severe(e.getMessage());
            logger.fine("-------->Sleeping for " + idleSleep + " minutes...hzzzzzz (Active queues:"+ activeQueues.size()+")");
            try{
                if(!myThread.interrupted())
                    myThread.sleep(60*1000*idleSleep);
            catch(InterruptedException e){
                logger.fine("-------->Wakeing up !!!");
        }//while
    public void setMyThread(Thread t){
        myThread = t;
    /** This method is only used to start Jump as a separate thread this is
     *usefull to allow jump to access its own thread to sleep wait and synchronize
     *If you just start ProcessQueue from main method it is not possible to
     *use methods like Thread.sleep becouse object is not owner of current thread.
    public void run() {
        processQueue();
    /** This is just another facade to hide database access from another classes*/
    public void updateOraTaskStatus(QueueTask task, boolean success){
        try{
            manager.updateOraTaskStatus(task, success);
        catch(Exception e){
            logger.severe("Cannot update status of task table for task:" + task.getID() + "\nReason: " + e.getMessage());
    /** This is facade to JumpQueueManager method with same name to hide
     *existance of database and SQLExceptions from processor classes
     *Processor class calls this method to execute stored proc and it doesn't
     *take care about any SQL related issues including exceptions
    public void executeStoredProc(String proc) throws Exception{
        try{
            manager.executeStoredProc(proc);
        catch(Exception e){
            //logger.severe("Cannot execute stored procedure:"+ proc + "\nReason: " + e.getMessage());
            throw e;
     *This method is only to hide QueueManager object from access from JumpProcessors
     *It handles exceptions and datbase connecting/disconnecting and is called from
     *JumpProceesor thread.
    public void updateTaskStatus(int taskID, int status){
        try{
            manager.updateTaskStatus(taskID, status);
        catch(Exception e){
            logger.severe("Cannot update status of task: " + taskID + " to " + status + "\nReason: " + e.getMessage());
    public java.sql.Connection getDBConnection(){
        try{
            return manager.getNewConnection();
        catch(Exception e){
            logger.severe("Cannot acquire new database connection: " + e.getMessage());
            return null;
    protected synchronized void setExecution(QueueTask task, boolean active){
        if(active){
            activeQueues.put(new Integer(task.getQueueNum()), JumpConstants.TH_STAT_BUSY);
        else{
            activeQueues.remove(new Integer(task.getQueueNum()));
    public static void main(String[] args){
             try{
         System.out.println("The length-->"+args.length);
        System.out.println("It's " + new java.util.Date() + " now, have a good time.");
        if(args.length<5){
            System.out.println("More parameters needed:");
            System.out.println("1 - JDBC strign, 2 - DB User, 3 - DB Password, 4 - sleeping time (minutes), 5 - log file dir");
            return;
        Jump jump = new Jump(args[0], args[1], args[2], Integer.parseInt(args[3]), args[4]);
        Thread t1= new Thread(jump);
        jump.setMyThread(t1);
        t1.start();}
             catch(Exception e){
                  e.printStackTrace();
} The exception i am getting is
java.lang.NoClassDefFoundError: jdbc:oracle:thin:@localhost:1521:xe
Exception in thread "main" ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2
JDWP exit error AGENT_ERROR_NO_JNI_ENV(183): [../../../src/share/back/util.c:820] Please help me.....
Thanks in advance.....sathya

I am not willing to wade through the code, but this portion makes me conjecture your using an Oracle connect string instead of a class name.
java.lang.NoClassDefFoundError: jdbc:oracle:thin:@localhost:1521:xe

Batch prog to execute remote java program

hi all
i have one batch file which executes the local java program ....
but i want to execute a java program in a remote machine....
how do i do this..? kindly help

Well this is what I do in Windows (I use XP but it works in others):
First you have to make sure all the class files are in the same folder (duh)
Then you copy your java.exe from your jre folder into the folder with all your class files.
Finally, you create a shortcut to java.exe and add your class name to the command line on the shortcut.
Now all you have to do is double click on the shortcut and your program runs. Sure it's not that pretty but it works.

How to execute a java program in linux ternimal shell??

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http://java.sun.com/docs/books/tutorial/getStarted/cupojava/unix.html

Executing a .bat/java program every 5 minutes

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