Java program to ping an IP address

PingIP.java

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

public class PingIP {

  public static void runSystemCommand(String command) {

		try {
			Process p = Runtime.getRuntime().exec(command);
			BufferedReader inputStream = new BufferedReader(
					new InputStreamReader(p.getInputStream()));

			String s = "";
			// reading output stream of the command
			while ((s = inputStream.readLine()) != null) {
				System.out.println(s);
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		
		String ip = "google.com";
		runSystemCommand("ping " + ip);

	
	}
}

Awesome!
I struggled alot with NetworkInterfaces but couldn't help.
Thanks so much, it works fine.

thanks !

Hi JavaExpert, I am new member in this group. I would like to add bulk ping, which will take from file and generate output in CSV format if 3 consecutive ping successful. I am sure you guys will help me in writing program. Appreciate your help

@eandresen You can try p.destroy(); to stop ping.

how to use that code in java jframe?

how to use that code in java jframe?

Exact same method, you'd just need to handle an event that triggers it and obviously the response. Let me know if you need more info!

This works fine on Mac OS, however is there an additional command that needs to be called for Windows systems? Seems to fail on Windows.

I would do it in a different way:

public static void isReachable(String address) {
        try {
            InetAddress inetAddress = InetAddress.getByName(address);
            boolean isReachable = inetAddress.isReachable(5000);
            System.out.printf("Is the address [%s] reachable? -%s\n", address, isReachable ? "Yes" : "No");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

This is ICMP way. Unfortunately, it is not always available.