Test if a IP address is reachable

isReachable(int timeout) method of InetAddress class test whether that address is reachable.

Test if a IP address is reachable

package javamynetwork;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @web http://java-buddy.blogspot.com/
 */
public class JavaMyNetwork {

    static String targetIP1 = "192.168.111.107";
    static String targetIP2 = "192.168.111.108";

    public static void main(String[] args) {

        String testIp = "192.168.111.107";
        System.out.println(testIp + " is reachable: " 
                + isIpReachable(testIp));
        testIp = "192.168.111.108";
        System.out.println(testIp + " is reachable: " 
                + isIpReachable(testIp));
    }

    private static boolean isIpReachable(String targetIp) {

        boolean result = false;
        try {
            InetAddress target = InetAddress.getByName(targetIp);
            result = target.isReachable(5000);  //timeout 5sec
        } catch (UnknownHostException ex) {
            System.out.println(ex.toString());
        } catch (IOException ex) {
            System.out.println(ex.toString());
        }
        return result;
    }

}