import java.io.*;

public class Test
{
	public static void main(String args[])
	{
		Process p = null;
		
		try {
			p = Runtime.getRuntime().exec(args[0]);
			
			Flusher errorFlusher = new Flusher(p.getErrorStream());
			errorFlusher.start();
			
			try {
				p.waitFor();
			} catch(InterruptedException ignored) {}
			
			if(errorFlusher.readData()) {
				System.out.println("Read data on stderr.");
			}
		} catch(IOException ignored) {
		} finally {
			if(p != null) p.destroy();
		}
	}
	
	private static class Flusher extends Thread
	{
		private BufferedReader m_reader;
		private boolean m_readData;
		
		public Flusher(InputStream stream)
		{
			m_readData = false;
			m_reader = new BufferedReader(new InputStreamReader(stream));
		}
		
		public synchronized void run()
		{
			try {
				String line = m_reader.readLine();  // will block if no data is available
				m_readData = (line != null);
				
				// Suck up all of the data
				while(line != null) {
					line = m_reader.readLine();
				}
			} catch(IOException ignored) {}
		}
		
		public synchronized boolean readData()
		{
			return m_readData;
		}
	}
}