import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ExecuteShellComand {
private static final String IPADDRESS_PATTERN = "([01]?\\d\\d?|2[0-4]\\d|25[0-5])"
+ "\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])"
+ "\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])"
+ "\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])";
private static Pattern pattern = Pattern.compile(IPADDRESS_PATTERN);
private static Matcher matcher;
public static void main(String[] args) {
String domain = "google.com";
Process p;
try { p = Runtime.getRuntime().exec("host -t a " + domain); p.waitFor();
BufferedReader reader = new BufferedReader(new InputStreamReader(
p.getInputStream()));
StringBuffer sb = new StringBuffer();
String line = reader.readLine();
sb.append(line);
while (line != null) { line = reader.readLine();
sb.append(line);
}
List<String> list = getIpAddress(sb.toString());
if (list.size() > 0) { System.out.println(domain + " tiene las direcciones IP: ");
for (String ip : list) { System.out.println(ip);
}
} else { System.out.println(domain + " no tiene ninguna dirección IP.");
}
} catch (Exception e) { e.printStackTrace();
}
}
public static List<String> getIpAddress(String msg) {
List<String> ipList = new ArrayList<String>();
if (msg == null || msg.equals("")) return ipList;
matcher = pattern.matcher(msg);
while (matcher.find()) { ipList.add(matcher.group(0));
}
return ipList;
}
}
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