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POCallable class giving error: doPing is not abstract and does not override abstract method call()?
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copied!<p>I seem to be getting the above error when trying to make a callable class. I have searched for the reason but can't seem to find anything. NetBeans gives me a few options to make things abstract but I'm new to this and I'd rather find out why something is happening. Can anyone shed light on this?</p> <pre><code>public class doPing implements Callable<String>{ public String call(String IPtoPing) throws Exception{ String pingOutput = null; //gets IP address and places into new IP object InetAddress IPAddress = InetAddress.getByName(IPtoPing); //finds if IP is reachable or not. a timeout timer of 3000 milliseconds is set. //Results can vary depending on permissions so cmd method of doing this has also been added as backup boolean reachable = IPAddress.isReachable(1400); if (reachable){ pingOutput = IPtoPing + " is reachable.\n"; }else{ //runs ping command once on the IP address in CMD Process ping = Runtime.getRuntime().exec("ping " + IPtoPing + " -n 1 -w 300"); //reads input from command line BufferedReader in = new BufferedReader(new InputStreamReader(ping.getInputStream())); String line; int lineCount = 0; while ((line = in.readLine()) != null) { //increase line count to find part of command prompt output that we want lineCount++; //when line count is 3 print result if (lineCount == 3){ pingOutput = "Ping to " + IPtoPing + ": " + line + "\n"; } } } return pingOutput; } } </code></pre>

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