start another program from an application

Posted on 2006-11-03
Medium Priority
Last Modified: 2010-03-31
Hi Experts,

A simple question...

I have developed an application and from that application I have to start another application that is on my hard disk.
Is there a way to start that outside application from my application.

Question by:blarouche
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Assisted Solution

gkishoreji earned 200 total points
ID: 17868632
u can use Runtime.exec to execute that application

Author Comment

ID: 17868767
The file I have to start is in my F:\ua\EzDownloader.exe

How would I code that?

LVL 14

Accepted Solution

hoomanv earned 300 total points
ID: 17868811
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Author Comment

ID: 17868900

I get the following messasge when I run the code :

java.lang.IllegalThreadStateException: process has not exited
      at java.lang.ProcessImpl.exitValue(Native Method)
      at alarms.Test.main(Test.java:13)

I have to say that when I  excecute EzDownloader,  another message box appears and ask me to push on the button Download now.

Author Comment

ID: 17868910
I forgot to include my code :

import java.util.*;
import java.io.*;

public class Test
    public static void main(String args[])
            Runtime rt = Runtime.getRuntime();
            Process proc = rt.exec("F:/ua/EzDownloader");
            int exitVal = proc.exitValue();
            System.out.println("Process exitValue: " + exitVal);
        } catch (Throwable t)
LVL 14

Assisted Solution

hoomanv earned 300 total points
ID: 17868939
exitValue() throws IllegalThreadStateException - if the subprocess represented by this Process object has not yet terminated.

You can use waitFor to wait for the process to terminate

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