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running batch files from java

1 reply on 1 page. Most recent reply: Jul 26, 2004 4:22 AM by Sunitha C S

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ross klingensmith

Posts: 1
Nickname: kling
Registered: Jul, 2004

running batch files from java

Posted: Jul 23, 2004 6:38 PM

I am a developer who is trying to run batch files from within a java application. As of now, i can get the batch files to run in order like so:

do
{
Process rt;
rt=Runtime.getRuntime().exec( "run.bat "+
strUnits[iIndex]+ ".txt"
+ strUnits[iIndex] )
rt.wait()
iIndex++;
}while(strUnits[iIndex] != null )

However, I am trying to get these batch files to run at the same time (each one can run indefinately).
If i remove the rt.wait(), none of the batch files get called. Is there a way to do this? Possibly with threading (dont know how to use threading if a variable number of threads are used), or is what i am trying to do out of the scope of what java can do?

Thank you for advance for your help

Sunitha C S

Posts: 20
Nickname: sunics
Registered: Dec, 2003

Re: running batch files from java

Posted: Jul 26, 2004 4:22 AM

Hello,

The same code can be used with threads. the following change u need to make.

public class BatchThread extends Thread
{
...
...
...
int val;
public BatchThread(int s)
{ val=s;
}
public void run()
{ Process rt;
rt=Runtime.getRuntime().exec( "run.bat "+
strUnits[val]+ ".txt"
+ strUnits[val] )
}
}

public class theCaller
{....
....
public static void main(String s[])
{ int i=0;
do{ BatchThread t=new BatchThread(i);
t.run();
i++;
}while(i<=strUnits.length)
}
}

good luck....

sunitha

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