runtime.exec()


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Thread: runtime.exec()

  1. 11-28-2001, 09:28 AM #1
    Seb Guest

    runtime.exec()


    I have chosen to use a very simple solution to a simple problem but
    it doesnt work.
    I have a web application that creates an XML file from a submitted form and
    all the rest, i have a simple java application which should allow the user
    to browse the file system and find the xml file and then be able to render
    that xml as html and show it in a browser.
    I am trying to use Runtime.exec() as this:
    String filePath; // this is the file path as returned from the JFilechooser
    Runtime rt = Runtime.getRuntime();
    rt.exec(filepath,null);

    this is the error message that i get:

    java.io.IOException: CreateProcess:
    *** the file path here ***** error=193
    at java.lang.Win32Process.create(Native Method)
    at java.lang.Win32Process.<init>(Unknown Source)
    at java.lang.Runtime.execInternal(Native Method)
    at java.lang.Runtime.exec(Unknown Source)
    at java.lang.Runtime.exec(Unknown Source)
    at java.lang.Runtime.exec(Unknown Source)
    at jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112)
    at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    at jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    Source)
    at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

    doesnt matter what i try to execute i get a similar sort of error.
    I have never used exec() but i have used the equivalent of this in C++ without
    having any problem.

    Any idea what am i doing wrong???

    Seb
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  2. 11-28-2001, 10:59 AM #2
    Seb Guest

    Re: runtime.exec()


    Paul,
    Thanks for the reply,the second parameter is for the environment variable,
    i tried almost every thing i could think of. I even tried simple things like
    this

    rt.exec("dir");

    to see if it recognises dos commands but still getting the same error.

    "Paul Clapham" <pclapham@core-mark.com> wrote:
    >What's with the "null" for the second parameter?
    >
    >PC2
    >
    >"Seb" <seb@hotmail.com> wrote in message news:3c04e670$1@147.208.176.211...
    >>
    >> I have chosen to use a very simple solution to a simple problem but
    >> it doesnt work.
    >> I have a web application that creates an XML file from a submitted form
    >and
    >> all the rest, i have a simple java application which should allow the
    user
    >> to browse the file system and find the xml file and then be able to render
    >> that xml as html and show it in a browser.
    >> I am trying to use Runtime.exec() as this:
    >> String filePath; // this is the file path as returned from the
    >JFilechooser
    >> Runtime rt = Runtime.getRuntime();
    >> rt.exec(filepath,null);
    >>
    >> this is the error message that i get:
    >>
    >> java.io.IOException: CreateProcess:
    >> *** the file path here ***** error=193
    >> at java.lang.Win32Process.create(Native Method)
    >> at java.lang.Win32Process.<init>(Unknown Source)
    >> at java.lang.Runtime.execInternal(Native Method)
    >> at java.lang.Runtime.exec(Unknown Source)
    >> at java.lang.Runtime.exec(Unknown Source)
    >> at java.lang.Runtime.exec(Unknown Source)
    >> at
    >jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112
    >)
    >> at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    >> at
    >jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    >> at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    >> at
    >javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    >> Source)
    >> at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
    >Source)
    >> at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    >> at
    >javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    >> Source)
    >> at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    >> at java.awt.Component.processMouseEvent(Unknown Source)
    >> at java.awt.Component.processEvent(Unknown Source)
    >> at java.awt.Container.processEvent(Unknown Source)
    >> at java.awt.Component.dispatchEventImpl(Unknown Source)
    >> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >> at java.awt.Component.dispatchEvent(Unknown Source)
    >> at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
    >Source)
    >> at java.awt.LightweightDispatcher.processMouseEvent(Unknown
    >Source)
    >> at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    >> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >> at java.awt.Window.dispatchEventImpl(Unknown Source)
    >> at java.awt.Component.dispatchEvent(Unknown Source)
    >> at java.awt.EventQueue.dispatchEvent(Unknown Source)
    >> at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    >> Source)
    >> at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
    >Source)
    >> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    >> at java.awt.EventDispatchThread.run(Unknown Source)
    >>
    >> doesnt matter what i try to execute i get a similar sort of error.
    >> I have never used exec() but i have used the equivalent of this in C++
    >without
    >> having any problem.
    >>
    >> Any idea what am i doing wrong???
    >>
    >> Seb
    >
    >

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  3. 11-28-2001, 11:44 AM #3
    Seb Guest

    Re: runtime.exec()


    Sorted now. Who ever needs to use this, you need to use some pre-historic
    dos commands, ie something like this:
    String [] cmd = new String [3];
    cmd[0] = "cmd.exe";
    cmd [1] = "/c" // this is the trick, it means execute what follows
    cmd[2] = "fileName.ext";
    rt.exec(cmd);

    "Seb" <seb@hotmail.com> wrote:
    >
    >Paul,
    >Thanks for the reply,the second parameter is for the environment variable,
    >i tried almost every thing i could think of. I even tried simple things
    like
    >this
    >
    >rt.exec("dir");
    >
    >to see if it recognises dos commands but still getting the same error.
    >
    >"Paul Clapham" <pclapham@core-mark.com> wrote:
    >>What's with the "null" for the second parameter?
    >>
    >>PC2
    >>
    >>"Seb" <seb@hotmail.com> wrote in message news:3c04e670$1@147.208.176.211...
    >>>
    >>> I have chosen to use a very simple solution to a simple problem but
    >>> it doesnt work.
    >>> I have a web application that creates an XML file from a submitted form
    >>and
    >>> all the rest, i have a simple java application which should allow the
    >user
    >>> to browse the file system and find the xml file and then be able to render
    >>> that xml as html and show it in a browser.
    >>> I am trying to use Runtime.exec() as this:
    >>> String filePath; // this is the file path as returned from the
    >>JFilechooser
    >>> Runtime rt = Runtime.getRuntime();
    >>> rt.exec(filepath,null);
    >>>
    >>> this is the error message that i get:
    >>>
    >>> java.io.IOException: CreateProcess:
    >>> *** the file path here ***** error=193
    >>> at java.lang.Win32Process.create(Native Method)
    >>> at java.lang.Win32Process.<init>(Unknown Source)
    >>> at java.lang.Runtime.execInternal(Native Method)
    >>> at java.lang.Runtime.exec(Unknown Source)
    >>> at java.lang.Runtime.exec(Unknown Source)
    >>> at java.lang.Runtime.exec(Unknown Source)
    >>> at
    >>jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112
    >>)
    >>> at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    >>> at
    >>jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    >>> at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    >>> at
    >>javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    >>> Source)
    >>> at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
    >>Source)
    >>> at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    >>> at
    >>javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    >>> Source)
    >>> at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    >>> at java.awt.Component.processMouseEvent(Unknown Source)
    >>> at java.awt.Component.processEvent(Unknown Source)
    >>> at java.awt.Container.processEvent(Unknown Source)
    >>> at java.awt.Component.dispatchEventImpl(Unknown Source)
    >>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>> at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
    >>Source)
    >>> at java.awt.LightweightDispatcher.processMouseEvent(Unknown
    >>Source)
    >>> at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    >>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>> at java.awt.Window.dispatchEventImpl(Unknown Source)
    >>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>> at java.awt.EventQueue.dispatchEvent(Unknown Source)
    >>> at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    >>> Source)
    >>> at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
    >>Source)
    >>> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    >>> at java.awt.EventDispatchThread.run(Unknown Source)
    >>>
    >>> doesnt matter what i try to execute i get a similar sort of error.
    >>> I have never used exec() but i have used the equivalent of this in C++
    >>without
    >>> having any problem.
    >>>
    >>> Any idea what am i doing wrong???
    >>>
    >>> Seb
    >>
    >>
    >

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  4. 11-28-2001, 11:51 AM #4
    Paul Clapham Guest

    Re: runtime.exec()

    What's with the "null" for the second parameter?

    PC2

    "Seb" <seb@hotmail.com> wrote in message news:3c04e670$1@147.208.176.211...
    >
    > I have chosen to use a very simple solution to a simple problem but
    > it doesnt work.
    > I have a web application that creates an XML file from a submitted form
    and
    > all the rest, i have a simple java application which should allow the user
    > to browse the file system and find the xml file and then be able to render
    > that xml as html and show it in a browser.
    > I am trying to use Runtime.exec() as this:
    > String filePath; // this is the file path as returned from the
    JFilechooser
    > Runtime rt = Runtime.getRuntime();
    > rt.exec(filepath,null);
    >
    > this is the error message that i get:
    >
    > java.io.IOException: CreateProcess:
    > *** the file path here ***** error=193
    > at java.lang.Win32Process.create(Native Method)
    > at java.lang.Win32Process.<init>(Unknown Source)
    > at java.lang.Runtime.execInternal(Native Method)
    > at java.lang.Runtime.exec(Unknown Source)
    > at java.lang.Runtime.exec(Unknown Source)
    > at java.lang.Runtime.exec(Unknown Source)
    > at
    jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112
    )
    > at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    > at
    jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    > at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    > at
    javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    > Source)
    > at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
    Source)
    > at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    > at
    javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    > Source)
    > at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    > at java.awt.Component.processMouseEvent(Unknown Source)
    > at java.awt.Component.processEvent(Unknown Source)
    > at java.awt.Container.processEvent(Unknown Source)
    > at java.awt.Component.dispatchEventImpl(Unknown Source)
    > at java.awt.Container.dispatchEventImpl(Unknown Source)
    > at java.awt.Component.dispatchEvent(Unknown Source)
    > at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
    Source)
    > at java.awt.LightweightDispatcher.processMouseEvent(Unknown
    Source)
    > at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    > at java.awt.Container.dispatchEventImpl(Unknown Source)
    > at java.awt.Window.dispatchEventImpl(Unknown Source)
    > at java.awt.Component.dispatchEvent(Unknown Source)
    > at java.awt.EventQueue.dispatchEvent(Unknown Source)
    > at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    > Source)
    > at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
    Source)
    > at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    > at java.awt.EventDispatchThread.run(Unknown Source)
    >
    > doesnt matter what i try to execute i get a similar sort of error.
    > I have never used exec() but i have used the equivalent of this in C++
    without
    > having any problem.
    >
    > Any idea what am i doing wrong???
    >
    > Seb


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  5. 12-03-2001, 04:03 AM #5
    Werner Gaulke Guest

    Re: runtime.exec()


    Hello seb,

    the error code rt.exec return means:

    193 %1 is not a valid Win32 application. ERROR_BAD_EXE_FORMAT

    according to the Win SDK Help, The first parameter of rt.exec has to
    be an executable file like an *.exe. "Dir" does not work because it is'nt
    an executable either. The Executable for the "dir" command is the command
    interpreter 'cmd.exe' on NT.

    In your case you have to supply your browser as the executable and your
    xml file as the paramater for it.

    grettings from germany

    werner







    "Seb" <seb@hotmail.com> wrote:
    >
    >I have chosen to use a very simple solution to a simple problem but
    >it doesnt work.
    >I have a web application that creates an XML file from a submitted form
    and
    >all the rest, i have a simple java application which should allow the user
    >to browse the file system and find the xml file and then be able to render
    >that xml as html and show it in a browser.
    >I am trying to use Runtime.exec() as this:
    >String filePath; // this is the file path as returned from the JFilechooser
    >Runtime rt = Runtime.getRuntime();
    >rt.exec(filepath,null);
    >
    >this is the error message that i get:
    >
    >java.io.IOException: CreateProcess:
    >*** the file path here ***** error=193
    > at java.lang.Win32Process.create(Native Method)
    > at java.lang.Win32Process.<init>(Unknown Source)
    > at java.lang.Runtime.execInternal(Native Method)
    > at java.lang.Runtime.exec(Unknown Source)
    > at java.lang.Runtime.exec(Unknown Source)
    > at java.lang.Runtime.exec(Unknown Source)
    > at jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112)
    > at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    > at jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    > at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    > at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    >Source)
    > at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    > at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    > at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    >Source)
    > at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    > at java.awt.Component.processMouseEvent(Unknown Source)
    > at java.awt.Component.processEvent(Unknown Source)
    > at java.awt.Container.processEvent(Unknown Source)
    > at java.awt.Component.dispatchEventImpl(Unknown Source)
    > at java.awt.Container.dispatchEventImpl(Unknown Source)
    > at java.awt.Component.dispatchEvent(Unknown Source)
    > at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    > at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    > at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    > at java.awt.Container.dispatchEventImpl(Unknown Source)
    > at java.awt.Window.dispatchEventImpl(Unknown Source)
    > at java.awt.Component.dispatchEvent(Unknown Source)
    > at java.awt.EventQueue.dispatchEvent(Unknown Source)
    > at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    >Source)
    > at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    > at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    > at java.awt.EventDispatchThread.run(Unknown Source)
    >
    >doesnt matter what i try to execute i get a similar sort of error.
    >I have never used exec() but i have used the equivalent of this in C++ without
    >having any problem.
    >
    >Any idea what am i doing wrong???
    >
    >Seb

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  6. 12-03-2001, 04:23 AM #6
    Rob Guest

    Re: runtime.exec()


    This is a classic example of not paying enough attention to the API. It clearly
    states that the runtime exec is not a command line! Therefore why are you
    using it as such! The solution given below is a more correct response to
    the solution, since now the command engine we require is now being supplied.
    Please review the API more closely, as there are a few more ghosts lurking
    in the closet. Also, pay attention to paths, try using the full pathname
    for programs like netscape rather than just "netscape.exe".

    "Seb" <seb@hotmail.com> wrote:
    >
    >Sorted now. Who ever needs to use this, you need to use some pre-historic
    >dos commands, ie something like this:
    >String [] cmd = new String [3];
    >cmd[0] = "cmd.exe";
    >cmd [1] = "/c" // this is the trick, it means execute what follows
    >cmd[2] = "fileName.ext";
    >rt.exec(cmd);
    >
    >"Seb" <seb@hotmail.com> wrote:
    >>
    >>Paul,
    >>Thanks for the reply,the second parameter is for the environment variable,
    >>i tried almost every thing i could think of. I even tried simple things
    >like
    >>this
    >>
    >>rt.exec("dir");
    >>
    >>to see if it recognises dos commands but still getting the same error.
    >>
    >>"Paul Clapham" <pclapham@core-mark.com> wrote:
    >>>What's with the "null" for the second parameter?
    >>>
    >>>PC2
    >>>
    >>>"Seb" <seb@hotmail.com> wrote in message news:3c04e670$1@147.208.176.211...
    >>>>
    >>>> I have chosen to use a very simple solution to a simple problem but
    >>>> it doesnt work.
    >>>> I have a web application that creates an XML file from a submitted form
    >>>and
    >>>> all the rest, i have a simple java application which should allow the
    >>user
    >>>> to browse the file system and find the xml file and then be able to
    render
    >>>> that xml as html and show it in a browser.
    >>>> I am trying to use Runtime.exec() as this:
    >>>> String filePath; // this is the file path as returned from the
    >>>JFilechooser
    >>>> Runtime rt = Runtime.getRuntime();
    >>>> rt.exec(filepath,null);
    >>>>
    >>>> this is the error message that i get:
    >>>>
    >>>> java.io.IOException: CreateProcess:
    >>>> *** the file path here ***** error=193
    >>>> at java.lang.Win32Process.create(Native Method)
    >>>> at java.lang.Win32Process.<init>(Unknown Source)
    >>>> at java.lang.Runtime.execInternal(Native Method)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at
    >>>jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112
    >>>)
    >>>> at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    >>>> at
    >>>jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    >>>> at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    >>>> at
    >>>javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    >>>> Source)
    >>>> at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
    >>>Source)
    >>>> at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    >>>> at
    >>>javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    >>>> Source)
    >>>> at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    >>>> at java.awt.Component.processMouseEvent(Unknown Source)
    >>>> at java.awt.Component.processEvent(Unknown Source)
    >>>> at java.awt.Container.processEvent(Unknown Source)
    >>>> at java.awt.Component.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>>> at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
    >>>Source)
    >>>> at java.awt.LightweightDispatcher.processMouseEvent(Unknown
    >>>Source)
    >>>> at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    >>>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Window.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>>> at java.awt.EventQueue.dispatchEvent(Unknown Source)
    >>>> at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    >>>> Source)
    >>>> at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
    >>>Source)
    >>>> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    >>>> at java.awt.EventDispatchThread.run(Unknown Source)
    >>>>
    >>>> doesnt matter what i try to execute i get a similar sort of error.
    >>>> I have never used exec() but i have used the equivalent of this in C++
    >>>without
    >>>> having any problem.
    >>>>
    >>>> Any idea what am i doing wrong???
    >>>>
    >>>> Seb
    >>>
    >>>
    >>
    >

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  7. 12-06-2001, 05:32 AM #7
    Benjamin Guest

    Re: runtime.exec()


    Runtime.getRuntime().exec("cmd /c dir") also works

    "Seb" <seb@hotmail.com> wrote:
    >
    >Sorted now. Who ever needs to use this, you need to use some pre-historic
    >dos commands, ie something like this:
    >String [] cmd = new String [3];
    >cmd[0] = "cmd.exe";
    >cmd [1] = "/c" // this is the trick, it means execute what follows
    >cmd[2] = "fileName.ext";
    >rt.exec(cmd);
    >
    >"Seb" <seb@hotmail.com> wrote:
    >>
    >>Paul,
    >>Thanks for the reply,the second parameter is for the environment variable,
    >>i tried almost every thing i could think of. I even tried simple things
    >like
    >>this
    >>
    >>rt.exec("dir");
    >>
    >>to see if it recognises dos commands but still getting the same error.
    >>
    >>"Paul Clapham" <pclapham@core-mark.com> wrote:
    >>>What's with the "null" for the second parameter?
    >>>
    >>>PC2
    >>>
    >>>"Seb" <seb@hotmail.com> wrote in message news:3c04e670$1@147.208.176.211...
    >>>>
    >>>> I have chosen to use a very simple solution to a simple problem but
    >>>> it doesnt work.
    >>>> I have a web application that creates an XML file from a submitted form
    >>>and
    >>>> all the rest, i have a simple java application which should allow the
    >>user
    >>>> to browse the file system and find the xml file and then be able to
    render
    >>>> that xml as html and show it in a browser.
    >>>> I am trying to use Runtime.exec() as this:
    >>>> String filePath; // this is the file path as returned from the
    >>>JFilechooser
    >>>> Runtime rt = Runtime.getRuntime();
    >>>> rt.exec(filepath,null);
    >>>>
    >>>> this is the error message that i get:
    >>>>
    >>>> java.io.IOException: CreateProcess:
    >>>> *** the file path here ***** error=193
    >>>> at java.lang.Win32Process.create(Native Method)
    >>>> at java.lang.Win32Process.<init>(Unknown Source)
    >>>> at java.lang.Runtime.execInternal(Native Method)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at java.lang.Runtime.exec(Unknown Source)
    >>>> at
    >>>jsp.gui.SubmissionBrowser.jButton1ActionPerformed(SubmissionBrowser.java:112
    >>>)
    >>>> at jsp.gui.SubmissionBrowser.access$100(SubmissionBrowser.java:16)
    >>>> at
    >>>jsp.gui.SubmissionBrowser$2.actionPerformed(SubmissionBrowser.java:57)
    >>>> at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    >>>> at
    >>>javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
    >>>> Source)
    >>>> at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
    >>>Source)
    >>>> at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    >>>> at
    >>>javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
    >>>> Source)
    >>>> at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    >>>> at java.awt.Component.processMouseEvent(Unknown Source)
    >>>> at java.awt.Component.processEvent(Unknown Source)
    >>>> at java.awt.Container.processEvent(Unknown Source)
    >>>> at java.awt.Component.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>>> at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
    >>>Source)
    >>>> at java.awt.LightweightDispatcher.processMouseEvent(Unknown
    >>>Source)
    >>>> at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    >>>> at java.awt.Container.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Window.dispatchEventImpl(Unknown Source)
    >>>> at java.awt.Component.dispatchEvent(Unknown Source)
    >>>> at java.awt.EventQueue.dispatchEvent(Unknown Source)
    >>>> at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
    >>>> Source)
    >>>> at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
    >>>Source)
    >>>> at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    >>>> at java.awt.EventDispatchThread.run(Unknown Source)
    >>>>
    >>>> doesnt matter what i try to execute i get a similar sort of error.
    >>>> I have never used exec() but i have used the equivalent of this in C++
    >>>without
    >>>> having any problem.
    >>>>
    >>>> Any idea what am i doing wrong???
    >>>>
    >>>> Seb
    >>>
    >>>
    >>
    >

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  8. 10-18-2005, 06:14 PM #8
    jaganp76
    jaganp76 is offline Registered User
    Join Date
    Oct 2005
    Posts
    1

    How to make Runtime.exec platform independent

    Hi ,
    I have the following code which runs fine in windows,
    String[] cmd = {"cmd", "/c", "dir"};
    Process proc = Runtime.getRuntime().exec(cmd);

    How can I update this one to run the same code in windows, unix and linux.

    Thanks
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