java调用shell，并得到shell的输出

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;

public class RunShell {
	public static void main(String[] args) {
		try {
			///opt/flow_video/flow_total.sh 2011-05-26 11:08:02 12:08:07 192.168.1.152,192.168.1.153
			Process process = Runtime.getRuntime().exec("/opt/flow_video/tf.sh 2011-05-23 11:08:02 12:08:07");
			InputStreamReader ir = new InputStreamReader(process.getInputStream());
			LineNumberReader input = new LineNumberReader(ir);
			String line;
			while ((line = input.readLine()) != null)
			System.out.println(line);
			input.close();
			ir.close();
		} catch (IOException e) {
			e.printStackTrace();
		}	
	}

}