http://goo.gl/SFDlIW

executeShellCommandExample.java

package ca.i88.example;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author i88.ca
 */
public class CallShellCommandExample {

    public static void main(String[] args) throws IOException, InterruptedException {
        Process p;
        //old way
        p = Runtime.getRuntime().exec("date");
        p.waitFor();

        BufferedReader reader
                = new BufferedReader(new InputStreamReader(
                        p.getInputStream()));
        String line;
        while (true) {
            line = reader.readLine();
            if (line == null) {
                break;
            }
            System.out.println(line);
        }

        //new way
        ProcessBuilder pb = new ProcessBuilder("hostname");
        p = pb.start();
        p.waitFor();
        reader = new BufferedReader(new InputStreamReader(
                p.getInputStream()));
        while (true) {
            line = reader.readLine();
            if (line == null) {
                break;
            }
            System.out.println(line);
        }
        
        //with parameters
        ProcessBuilder pb2 = new ProcessBuilder("dig","it.i88.ca","@8.8.8.8");
        p = pb2.start();
        p.waitFor();
        reader = new BufferedReader(new InputStreamReader(
                p.getInputStream()));
        while (true) {
            line = reader.readLine();
            if (line == null) {
                break;
            }
            System.out.println(line);
        }
    }
}