Attached is an example of how to grab stdout and stderr from a spawned
process.  Comments are welcome.

Randall

/* Exec.java */

import java.io.IOException;

/** A example of spawning a process. */
public class Exec
{

public static void main (String[] args)
{
  System.out.println("Hello world!");
  String[] command = {
     "C:/Sun/jdk1.5.0_06/bin/java.exe",
     "HelloLog"
  };
  try
  {
     Process process = Runtime.getRuntime().exec(command);
     StreamConsumer inFromProcess
        = new StreamConsumer(process.getInputStream());
     inFromProcess.start();
     StreamConsumer errFromProcess
        = new StreamConsumer(process.getErrorStream());
     errFromProcess.start();
  }
  catch(IOException e)
  {
     e.printStackTrace();
  }
}

}

/* StreamConsumer.java */

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.IOException;

public class StreamConsumer extends Thread
{
  protected BufferedInputStream stream;
  protected int bufSize = 1024;
  protected byte[] buffer;

public StreamConsumer(InputStream stream)
{
  this.stream = new BufferedInputStream(stream);
  buffer = new byte[bufSize];
}

public void run()
{
  boolean isDone = false;
  while ( !isDone )
  {
     try
     {
        int count = stream.read(buffer, 0, bufSize);
        String out = new String(buffer);
        System.out.print(out);
        if ( count < 0 )
        {
           isDone = true;
        }
     }
     catch(IOException e)
     {
        isDone = true;
        e.printStackTrace();
     }
  }
}

}

/* HelloLog.java */

import java.util.logging.Logger;

/** A class that prints something to stderr. */
public class HelloLog
{
  private static final Logger log
     = Logger.getLogger(HelloLog.class.getName());

public static void main (String[] args)
{
  for ( int i = 0; i < 10; i++ )
  {
     log.info("Hello world!");
  }
}

}