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 * @author Janina Brosien, Julia Krueger
public class PingJJ {

	public static void main(String[] args) throws Exception {
    	for (int i = 60; i <= 80; i++) {     // Läuft die Nummern 60 bis 80 durch 
    		InetAddress host = InetAddress.getByName("sun"+i);   // holt sich anhand des Names (sun+i) die IP-adresse des Computers
    			if (host.isReachable(1000)) { // pingt die adresse an und wartet 1000ms auf die antwort (timeout), liefert True/False
    				System.out.println(host + " online!!"); // Host ist erreichbar
    			} else {
    				System.out.println(host + " nicht da..."); // Host ist nicht erreichbar


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