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JButton and Execute Windo

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  JButton and Execute Windo "banker123" <banker123@THRWHITE.remove-dii-this> - 2011-04-27 15:34 +0000
    Re: JButton and Execute W "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:34 +0000
      Re: JButton and Execute W "m.djukic" <m.djukic@THRWHITE.remove-dii-this> - 2011-04-27 15:34 +0000

#1649 — JButton and Execute Windo

  To: comp.lang.java.gui
I am new to Java, I have built a GUI that contains a JButton.  I would
like this JButton to execute a windows batch file when the user clicks
the button.  Below is my attempt, please help.


private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
{

    try {
    Runtime rt = Runtime.getRuntime();
    String[] args = {"c:\\test.bat"};
    Process proc = rt.exec(args);
    }
    catch  (IOException e) {
    System.err.println (e);
    }

    }

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#1653 — Re: JButton and Execute W

  To: comp.lang.java.gui
banker123 wrote:
> I am new to Java, I have built a GUI that contains a JButton.  I would
> like this JButton to execute a windows batch file when the user clicks
> the button.  Below is my attempt, please help.
> 
> 
> private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)
> {
> 
>     try {
>     Runtime rt = Runtime.getRuntime();
>     String[] args = {"c:\\test.bat"};
>     Process proc = rt.exec(args);
>     }
>     catch  (IOException e) {
>     System.err.println (e);
>     }
> 
>     }
> 

Maybe you should tell us what the problem is unless you think we can 
read your mind.

At first glance, an ActionListener must implement "public void 
actionPerformed(ActionEvent)" so you need to at least change that in 
your code.

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#1663 — Re: JButton and Execute W

  To: comp.lang.java.gui


try:

...
	Runtime r = Runtime.getRuntime();
	Process p = null;
	String cmd =  "c://test.bat";
	try {
	    p = r.exec(cmd);

           p.waitFor(); //to wait to execute command

	} catch (Exception e) {
	    System.out.println("error executing " + cmd);
	}
	System.out.println(cmd + " returned " + p.exitValue());

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